Jasper Herbert Kane
By Kenneth Sun
Introduction
The focus of this investigation is on one of the Giants of Poly, Jasper Kane. I chose to present Jasper Kane to highlight his monumental historical contributions to the field of medicine. I believe that Jasper Kane’s journey reflects the broader impact of Polytechnic University alumni on society through scientific innovation. This investigation seeks to answer the question: How did Jasper Kane’s development and implementation of deep-tank fermentation transform penicillin from a laboratory discovery into a mass-produced medicine and, in the process, transform the pharmaceutical industry? More importantly, this investigation seeks to demonstrate that industrial engineering innovations, not just scientific discovery, were the decisive factors in transforming penicillin into a global medicine. This investigation argues that the decisive turning point in penicillin’s history was not its initial discovery but the development of industrial-scale production methods, demonstrating that engineering innovation played a more critical role than laboratory science in transforming penicillin into a globally accessible medicine.
Jasper H. Kane ("The Chemical Engineer, “Image of Jasper Kane,” Poly Archives, accessed April 8, 2026, https://polyarchives.hosting.nyu.edu/items/show/185.")
Who Was Jasper Kane?
Jasper Herbert Kane (July 15, 1903 – November 19, 2004) was an American industrial chemist who played a major role in the development of deep-tank fermentation for the mass production of penicillin during World War II. According to Giants of Poly: Jasper H. Kane: A Legacy of Dazzling Discoveries, when asked what his proudest accomplishment was, Kane answered with no hesitation, “penicillin,” revealing how strongly he identified with the wartime transformation of pharmaceutical production (“Jasper H. Kane: A Legacy of Dazzling Discoveries”).
As one of the favorite sons of Brooklyn and the Polytechnic Institute of Brooklyn, Jasper Kane, a chemistry major, attended evening classes at the Polytechnic Institute of Brooklyn from 1918 to 1928, graduating in 1928. He began his career at Pfizer Inc. in 1919 as a 16-year-old laboratory assistant and remained with the company for 34 years, retiring in 1953. In recognition of his pioneering work in industrial fermentation, particularly the development of deep-tank fermentation that made the mass production of penicillin possible during World War II, as well as his broader contributions to industrial chemistry and antibiotic production, Jasper H. Kane received an honorary doctoral degree from Polytechnic University in 1995 (“Jasper H. Kane: A Legacy of Dazzling Discoveries”). His work on penicillin and Terramycin revolutionized industrial fermentation by scaling antibiotic production from limited laboratory quantities to large-scale manufacturing, saving countless lives. Kane’s contributions to industrial systems are crucial innovations that made the application of these and related discoveries available on a global scale.
Kane’s Career Milestones and Achievements
Polytechnic Institute 
Citric Acid 
Vitamin B2 
Penicillin 
Terramycin This timeline shows multiple stages of Kane's success in applying his fermentation methods. Although penicillin was Dr. Kane’s most famous accomplishment, his storied career in deep-tank fermentation used for the production of penicillin began much earlier. In 1919, at the age of 16, he joined Pfizer as a laboratory assistant under Dr. James Currie, a food chemist at Charles Pfizer’s company. The teenage Kane worked on SUCIAC (Sugar Under Conversion Into Acid Citric), a project that revolutionized the citric acid industry. Early in his career, Kane made his first company-transforming discoveries in 1933 by developing a method to substitute molasses, a cheap by-product of sugar refining, for more expensive white sugar in citric acid production. He employed submerged fermentation methods, using large, deep tanks rather than shallow trays, allowing microorganisms to grow throughout the entire liquid medium instead of only on the surface. This approach saved millions of dollars in raw material and production costs and freed Pfizer from dependence on European citrus growers. Building on his success in citric acid production, Kane applied fermentation methods in 1938 to produce a substance containing riboflavin (vitamin B2) that could be added to flour. The new process for producing vitamins demonstrated the growing potential of industrial fermentation and contributed to 40% of Pfizer’s earnings (“Jasper H. Kane: A Legacy of Dazzling Discoveries”; Roueché, 1951). The submerged fermentation methods that Kane strongly advocated paved the way for large-scale industrial fermentation, including deep-tank fermentation used in the mass production of penicillin during World War II. His implementation of deep-tank fermentation in 1943 enabled the large-scale production of penicillin, transforming it from a laboratory discovery into a widely available, life-saving drug. After the war, in 1950, as Director of Biochemical Research at Pfizer Inc., Kane led the team that discovered and produced Terramycin, a broad-spectrum antibiotic effective against more than 100 different infectious organisms (“Zoetis History”, 2015). These milestones suggest that Kane’s most significant achievement was the development of scalable industrial processes, which later became essential for transforming penicillin into a mass-produced medicine.
The following pictures are from Pfizer Inc. They depict citric acid, Vitamin B2 production, penicillin, and Terramycin.
Citric Acid (Pfizer)
Vitamin B2 Production (Pfizer)
Penicillin Vial (Pfizer)
Citric Terramycin (Pfizer)
The above pictures represent Jasper Kane’s major industrial and pharmaceutical achievements. They also illustrate the progression of his deep-tank fermentation innovation. Each of these corresponds to the milestones and important contributions that Jasper Kane made to society while working at Pfizer. Citric acid and Vitamin B2 are two significant Pfizer Inc. products that are produced through deep-tank fermentation, reflecting significant commercial value in terms of cost savings (in producing citric acid) and new revenue generation from new products (Vitamin B2). These examples demonstrate how Kane’s early fermentation work had an immediate economic and commercial impact on the industry. Penicillin and Terramycin are two highly effective antibiotics in controlling infections during and after World War II. The shift from industrial chemicals to pharmaceutical products illustrates the versatility of deep-tank fermentation technology, since all of these products are produced based on deep-tank fermentation methods pioneered by Jasper Kane. Together, these historical pictures from Pfizer Inc. support the case that Kane’s development of deep-tank fermentation enabled both large-scale industrial production and the widespread availability of critical medicines. More importantly, this progression demonstrates that the same fermentation principles underpinned both industrial chemicals and life-saving medicines, reinforcing the argument that the breakthrough in penicillin was rooted in engineering continuity rather than a single moment of scientific discovery.
A Giant Made in Brooklyn
Jasper H. Kane (Giants of Poly)
The booklet “Giants of Poly: Jasper H. Kane: A Legacy of Dazzling Discoveries” is a selection from the Poly Archives. It is a chronological documentation of Jasper Kane’s life, his career milestones at Pfizer, and his significant contributions to medical science and society. As an institutional publication from the Poly Archives, it also reflects how Kane’s work has been interpreted and remembered at the Polytechnic Institute of Brooklyn. As quoted above, his proudest accomplishment during his career at Pfizer was penicillin, which reflects how Kane himself viewed the significance of his accomplishments. His innovation of deep-tank fermentation methods not only impacted the mass production of penicillin but also set an industrial standard for decades to come. He advocated the mass production of penicillin using deep-tank fermentation methods that he pioneered. The penicillin produced on a large scale by Pfizer played a critical role in World War II in saving countless lives of soldiers and later civilians. Microbiologist Gladys L. Hobby compared the mass production of the penicillin program to the Manhattan Project and emphasized the profound effect of penicillin on our modern society in saving tens of millions of lives (Conniff, 2017). This comparison of the mass production of the penicillin program with the Manhattan Project demonstrates the important impact of deep-tank fermentation methods on World War II and society. It also supports the argument that large-scale industrial coordination and engineering innovation were as critical to World War II success as scientific discovery itself. This perspective reinforces the broader argument that historical narratives often emphasize discovery while underrepresenting the industrial process that ultimately determines a technology’s real-world impact.
Penicillin and Kane’s Role
The journey of penicillin from discovery to medicine unfolded through a series of key steps. It began with Alexander Fleming’s chance discovery of mold on a bacteria-covered plate in London and continued about a decade later, when three Oxford researchers (Howard Florey, Ernst Boris Chain, and Norman Heatley) chose, somewhat by chance, to investigate it further among many possible research topics. During wartime, England’s production capabilities were severely limited, preventing large-scale manufacturing. As a result, Oxford scientists took penicillin to the United States to collaborate with American scientists and pharmaceutical companies to develop methods for mass production. Finally, penicillin became a widely available medicine through the use of deep-tank fermentation methods pioneered by Jasper H. Kane. This journey shows that while scientific discovery initiated the process, it was industrial innovation that completed it, transforming penicillin from an experimental substance into a practical and widely available treatment.
Discovery of Penicillin
Albert Alexander (Zaccaro, 2023) 
Nobel Prize Winners (Bruggink, 2021) Penicillin was discovered in September 1928 by Sir Alexander Fleming, a Scottish/British scientist who was a bacteriology professor at St. Mary’s Hospital in London. On September 3, 1928, Fleming started to sort his petri dishes containing Staphylococcus bacteria after coming back from his approximately three-week-long vacation. He noticed that in one of his petri dishes, dotted with Staphylococcus colonies, the bacteria had died around an area where mold was growing. He later identified it as Penicillium notatum, a rare strain of mold which produced penicillin, a substance that inhibits bacterial growth (“Discovery and Development of Penicillin”). The discovery of penicillin is an example of how chance plays an important role in scientific discoveries. Staphylococci, a human pathogen, grow most rapidly at the human body temperature of 98.6 °F. The lowest temperature at which it can grow is around 53 °F. The Penicillium mold prefers to grow around 77 °F (Blake, 2025).
Fleming’s Original Culture Plate in 1929 (Blake, 2025)
This is an image of Alexander Fleming’s original culture plate where penicillin was discovered. Penicillin is a substance that is not easy to produce and requires careful control of environmental conditions, including sterility, temperature, and nutrient balance.
According to the NOVA documentary, The Rise of a Wonder Drug: How Penicillin Changed the World, the environment that produced the effect that Alexander Fleming saw was extremely difficult to reproduce because molds and bacteria each require different temperatures to grow. Fleming usually grew bacteria on plates and put the plates in an incubator to allow the bacteria to form colonies. When he left for his three-week summer vacation, some of his petri dishes were left outside, allowing the English summer weather to create the conditions necessary for the discovery. “First, an unusual cold spell allowed the mold to flourish. Then, the temperature went up and the bacteria started growing. Beneath the lid of an abandoned laboratory plate, the mold started killing off the young bacteria. Fleming returned 3 weeks later. He started sorting through his old plates… Fleming noticed the extraordinary plate” (“NOVA: The Rise of a Wonder Drug (1986)”, 2025). Fleming found that penicillin could kill a wide range of bacteria. He attempted to isolate pure penicillin from mold liquid, which proved to be difficult. He published his paper in the British Journal of Experimental Pathology in June 1929. The discovery was largely forgotten at the time (“Discovery and Development of Penicillin”).
It was not until 1939 that Alexander Fleming’s discovery was transformed from a laboratory curiosity into a life-saving drug by three Oxford University scientists: Howard Florey, Ernst Chain, and Norman Heatley. These scientists began their work on the purification of penicillin during World War II, which made research conditions especially difficult. The team first carried out animal experiments in which they needed to process up to 500 liters of mold filtrate a week. They used many different culture vessels such as bedpans, baths, milk bottles, and food tins. The team later developed a customized fermentation vessel based on bedpans to save space and simplify the broth-removing process. From the filtrate, penicillin was extracted, purified, and concentrated prior to clinical trials. The scientists discovered that the key to extracting penicillin was controlling the pH, reducing the temperature, and repeatedly evaporating the product. The Oxford laboratory was turned into a penicillin factory during that time.
Penicillin Coming to America
In 1941, purified penicillin remained extremely scarce due to a combination of biological, chemical, and engineering challenges. “The Penicillium mold only grew in a film, a few millimeters thick, on the surface of a growth medium, and Oxford biochemist Norman Heatley constantly struggled to eke out enough of the stuff even for experimental purposes. His manufacturing lab comprised cookie tins, pie tins, milk bottles, trays, plates, and bedpans” (Conniff, 2017). The original strains of Penicillium mold produced only very low yields of antibiotics. In addition, penicillin is highly unstable and easily contaminated, and the molecule can degrade during extraction and purification from the broth. The production process was also time-consuming and labor-intensive, requiring careful control of environmental conditions, including sterile conditions, adequate aeration, careful temperature regulation, and the use of anti-foaming techniques to maintain optimal mold growth. Researchers at the University of Oxford could only produce penicillin in an array of small vessels, which severely restricted its availability. By early 1941, only enough penicillin for six patients had been produced by surface culture (Short, 2021).
Culture vessel, 1940, designed by Dr Norman George Heatley (1911-2004).
Museum reference T.1989.101.
This vessel is an artifact in the National Museum of Scotland. It was designed by Norman Heatley based on bedpans. He used this type of vessel to grow penicillin. The significance of this artifact is that, before deep-tank fermentation, penicillin production was limited to small batches. One source states that “By early 1941, only enough penicillin for six patients had been produced by surface culture” (Short, 2021). This limitation, the inability to scale production beyond fragile and inefficient small-batch systems, highlights the central problem that Kane’s later work would address.
Meanwhile, the effectiveness of penicillin was demonstrated by Oxford scientists through a controlled trial involving laboratory mice.
Injecting Penicillin into Mice in 1940 (Science History Institute, 2026)
The photo depicts Oxford University scientists Howard Florey and Ernst Boris Chain injecting penicillin into laboratory mice. The efficacy of penicillin was tested on eight laboratory mice on May 25, 1940. Four of the mice were given penicillin treatment, and the other four mice were used as controls. Sixteen and a half hours later, the four mice that received penicillin treatment were alive, while the control mice had died (Wood, 2010).
Albert Alexander (Sullivan, 2025)
This is a picture of Albert Alexander, the first human patient to be given penicillin treatment on February 12, 1941. Albert Alexander, a 43-year-old policeman, was injured and developed a serious case of sepsis after a cut on his face became infected. His blood was poisoned by bacteria. His physician, Charles Fletcher, noticed that “Alexander was in tremendous pain… The bacterial infection was eating him alive. He’d already lost one eye and was oozing abscesses all over his face and in his lungs.” Fletcher decided to treat Alexander with penicillin after exhausting all alternative treatment options. Alexander was given an initial dose of approximately 160 milligrams of penicillin (“The Forgotten Mother of Penicillin”). His urine was collected to recover residual penicillin after his injection. The collected urine was then brought to a laboratory and reprocessed. The recycled and reprocessed penicillin from the collected urine was injected back into him on the third day. On the fourth day, Alexander began a stunning recovery. However, the penicillin supply began to run out after the fifth day because not all of the penicillin injected into him could be recovered from his urine. Alexander gradually relapsed and died on March 15, 1941 (Sullivan, 2025) (“NOVA: The Rise of a Wonder Drug (1986)”, 2025). Alexander’s death illustrates not the failure of penicillin as a drug but the failure of existing production methods, underscoring the urgency for scalable manufacturing solutions.
Milk Bottle Penicillin Production (“Penicillin Production in WW II”)
Milk Bottle Penicillin Production (“Penicillin Production in WW II”)
These two pictures illustrate the production of penicillin through surface fermentation. Penicillin could only be produced in small batches using this method, which made supplying penicillin to wounded soldiers and civilians during the war nearly impossible (Conniff, 2017).
The contrast between small-batch surface fermentation, which relied on milk bottles and bedpan-based culture vessels, and the deep-tank fermentation method (to be described next) used to produce penicillin on a large scale shows the importance and necessity of Jasper Kane’s innovation in World War II.
Kane’s Deep-Tank Fermentation Patents
The deep-tank fermentation process pioneered by Jasper Kane plays an important role in the mass production of penicillin in World War II. Developed to increase yields for citric acid and vitamin production, deep-tank fermentation methods became an ideal and practical method to mass-produce penicillin.
Despite his major contributions to the mass production of penicillin, none of Jasper Kane’s patents directly involved penicillin production. However, he filed many patents on the deep-tank fermentation process, a process that was crucial for penicillin production during World War II. Kane’s patents included ones on fermentation processes that helped develop deep-tank methods for citric acid and were later applied to penicillin production (Patent 2,327,191 - https://patents.google.com/patent/US2327191A, Patent 2,385,283 - https://patents.google.com/patent/US2385283A, and Patent 1,893,819 - https://patents.google.com/patent/US1893819A) and patents related to Terramycin and its applications (Patent 2,516,080 - https://patents.google.com/patent/US2516080A, Patent 2,963,401 - https://patents.google.com/patent/US2963401A, and Patent 2,813,820 - https://patents.google.com/patent/US2813820A).
These patents are often grouped together under deep-tank fermentation, but each of them solves a different problem and requires a distinct process or engineering refinement. In each case, Kane and his collaborators addressed new technical challenges, such as chemical control, oxygen utilization, mold selection, and product extraction. This series of patents demonstrates the evolution of fermentation through multiple innovations.
Jasper Kane’s Patent 2,327,191
https://patentimages.storage.googleapis.com/a4/7a/f6/26ab4769a3aa26/US2327191.pdf
In U.S. Patent 2,327,191 – Production of Fumaric Acid, filed on December 7, 1939, inventors Jasper H. Kane, Alexander Finlay, and Philip F. Amann made 14 claims describing a new and commercially viable method for producing fumaric acid using mold fermentation. Earlier methods relied on surface (shallow) fermentation, which produced very low yields.
This is one of the patents that Jasper Kane filed on his deep-tank fermentation methods. This particular patent is related to the production of fumaric acid. The patented method enables substantial production of fumaric acid with minimal byproducts, making recovery easier and cheaper. Overall, this patent’s key innovation is to demonstrate that controlled, aerated submerged fermentation can achieve high yields and enable mass production. This patent also demonstrates how Kane’s work helped shift fermentation from small-scale laboratory practices to scalable industrial production.
The invention introduced a submerged aerobic fermentation process, in which molds, such as Rhizopus, Mucor, and Aspergillus, grow throughout a liquid medium rather than only on the surface. The process involves fermenting carbohydrate sources with nutrient salts while supplying oxygen. A neutralizer is added during fermentation to control acidity and increase yield.
Although the patent does not directly mention penicillin, it describes a fermentation method that was later used in the mass production of penicillin. Jasper Kane filed many patents related to deep-tank fermentation, each addressing a different chemical or engineering challenge. The progression across these patents shows the accumulation of technical expertise over time, as each innovation addressed a different challenge in fermentation, from oxygen transfer and agitation to biological efficiency and product purification. These patents demonstrate that Jasper H. Kane was a leading expert in deep-tank fermentation and played a central role in transforming fermentation from laboratory techniques to industrial-scale processes. Despite these contributions, Jasper Kane did not receive the level of recognition that he deserved for his significant innovations that contributed to the wide availability of penicillin. This lack of recognition is acknowledged in other sources. David Wilson wrote in his book In Search of Penicillin, “It is the biggest single failing of the myth about penicillin that it ignores the technological breakthrough of deep fermentation, a breakthrough that was every bit as vital to the successful development of penicillin as any of the more dramatic laboratory work” (Flavell-While, 2010). David Wilson’s statement reinforces the argument that Jasper Kane’s fermentation innovations were essential to penicillin’s success. This argument reinforces the idea that the breakthrough in penicillin production was not a single discovery, but the cumulative result of engineering advances that enabled reliable, large-scale fermentation.
Kane’s Critical Role in Penicillin Production
Jasper H. Kane (Giants of Poly)
The booklet "Jasper H. Kane: A Legacy of Dazzling Discoveries" from the Poly Archives provides detailed information about Jasper Kane’s career at Pfizer Inc. In addition to describing his role as a leading expert in deep-tank fermentation, it highlights his courage to take risks for the betterment of society. For example, this source describes how Kane advocated for large-scale experimental fermentation methods despite risks and challenges. This demonstrates that his contributions required significant professional judgement and willingness to innovate under pressure. Other sources further support this interpretation by emphasizing the urgency of wartime penicillin production, which required rapid technological innovation to meet wartime medical demand (Conniff, 2017).
During World War II, the War Production Board coordinated a rapidly expanding network of chemical and pharmaceutical companies, including Pfizer, to increase penicillin production. Initially, Pfizer attempted to produce penicillin using small-scale surface fermentation in flasks and shallow pans, but this approach was quickly abandoned due to low yields and a lack of scalability. Drawing on his expertise in the deep-tank fermentation process, Jasper Kane went to John L. Smith, head of the factory at Pfizer, and proposed that Pfizer employ deep-tank fermentation, using 2,000-gallon stainless-steel drums, a process that Kane had previously developed to produce citric acid and vitamins. Smith, however, expressed serious concerns about the risks involved. “The mold is as temperamental as an opera singer, the yields are low, the isolation is difficult, the extraction is murder, the purification invites disaster and the assay is unsatisfactory. Think of the risks and then think of the expensive investment in big tanks – think of what it means if you lose a 2,000-gallon tank as against what you lose if a flask goes bad. Is it worth it?” asked Smith. Dr. Kane replied, “It is – if it is the only way to get mass production.” Smith continued, “Think of this. Even the finished penicillin is unstable. We don’t know if we can make it in large amounts, or if we do, that we can store it and keep it sterile. And another thing: We can invest in an expensive tank method, and then someone else might develop an entirely new method of making it, or stumble on the formula for producing it synthetically. That would make our whole plant obsolete overnight.” Again, Kane replied, “It’s a risk we have to take. At this moment, it is the only way, even if it is a gamble.” Smith then asked Pfizer’s plant managers to vote: “Are you willing to risk the money necessary to put up a penicillin plant with the little we know so far about this drug?” The managers voted overwhelmingly “yes.” The board agreed and decided to convert their lucrative riboflavin (Vitamin B2) operations into penicillin production (“Jasper H. Kane: A Legacy of Dazzling Discoveries”). This moment represents a turning point in which industrial risk-taking and engineering expertise replaced laboratory experimentation as the primary driver of progress in penicillin production.
Kane’s Impact and Legacy
Fermentation Tanks at Pfizer (American Chemical Society, 2008)
The picture of Brooklyn's Pfizer factory on Marcy Avenue in Brooklyn shows penicillin production using deep-tank fermentation. Kane’s innovations laid the foundation for this method that was later used to mass-produce penicillin in World War II. They also established a standard practice for deep-tank fermentation in chemical and pharmaceutical production for decades to come. The success of these methods by Kane and his colleagues was not limited to a single company or product, but became part of a broader, collaborative industrial effort during World War II. Kane’s scalable, controlled deep-tank fermentation process was not only used to produce penicillin in Pfizer Inc. but also shared among many pharmaceutical companies, including Pfizer Inc.’s competitors, to support the war effort.
Kane played a major industrial role in developing and scaling this process for penicillin production. He adapted existing fermentation technology and redesigned fermentation conditions to grow Penicillium mold in large liquid tanks instead of shallow trays. He also helped engineer large, aerated fermentation tanks with aeration systems, mechanical agitation, temperature, pH control, and sterile conditions to prevent contamination. These improvements increased fermentation yields and allowed Pfizer to produce penicillin on a much larger scale. Deep-tank fermentation transformed penicillin from a scarce laboratory substance into a mass-produced drug.
By June 1943, according to Alexander Fleming’s biographer, Gwyn MacFarlane, penicillin production in the United States was about 425 million units a month, enough to treat only around 170 people. However, with the introduction of deep-tank fermentation methods pioneered by Kane, the output increased rapidly and soon was beyond all expectations (“Jasper H. Kane: A Legacy of Dazzling Discoveries”). This dramatic increase in output demonstrates that the primary limitation to penicillin’s success had not been scientific knowledge, but the ability to produce it at scale.
To ramp up penicillin production, Pfizer purchased the vacant Rubel Ice Plant on Marcy Avenue in Brooklyn. Employees worked 16 hours a day, round-the-clock for four months, sleeping on factory floors, repurposing ice-making refrigeration equipment, and installing 14 7,500-gallon tanks for deep-tank fermentation. By March 1, 1944, Pfizer’s Brooklyn factory was operational. This four-month conversion project transformed Pfizer from a citric acid manufacturer into a global pharmaceutical leader. Pfizer became the largest penicillin producer (Flavell-While, 2010).
“By D-Day, American production, most of it produced in Pfizer labs, had risen to a phenomenal 100,000 million units a month, enough to treat 40,000 cases.” This production increase ensured that large quantities of penicillin were available for Allied soldiers during the invasion of Europe. Soldiers carried vials of penicillin with them at Normandy Beach in France. 90% of the penicillin carried by Allied forces on D-Day was produced by Pfizer (“Jasper H. Kane: A Legacy of Dazzling Discoveries”). When penicillin was released in 1946 for civilians to use, Pfizer was producing 85% of the United States’ penicillin supply (Poly Collection, ARC.084, Pfizer Today: Bringing Science to Life).
Penicillin's Transformation
Charles Pfizer & Co. Inc., Penicillin bottle, 1944, M1990.13; Brooklyn Historical Society.
This photograph shows a vial of a standard dosage (“100,000 Oxford Units”) of penicillin produced by Pfizer Inc. in 1944 during World War II. It demonstrates a critical transformation in medical history, involving the evolution of penicillin from a laboratory discovery into a mass-produced, life-saving medicine (Conniff, 2017). While Alexander Fleming’s discovery laid the scientific foundation for this monumental medicine, Jasper H. Kane’s development of deep-tank fermentation was essential in enabling its industrial-scale production. This innovation made penicillin accessible on a large scale, dramatically reducing deaths from infections during World War II and fundamentally changing the treatment of infectious diseases. As a result, the mass production of penicillin marked the beginning of the modern antibiotic era and helped shape the pharmaceutical industry as it exists today. This shift shows that the key breakthrough in penicillin's history was not discovery but scalability, positioning Kane's engineering work as central to modern pharmaceutical production. Thus, the true transformation of penicillin occurred not in the laboratory, but in the factory, where engineering systems converted scientific knowledge into accessible medicine.
The mass production of penicillin using deep-tank fermentation became a lifesaving development for both soldiers and civilians after its introduction during World War II. Deep-tank fermentation methods pioneered by Kane became an industrial standard and are still in use by many industries today. Kane’s innovations not only improved production but also fundamentally changed how life-saving medicines could be made at a large scale and made available globally.
Saving Lives During and After World War II
Pfizer’s Motivational Poster (Flavell-While, 2010)
Pfizer Inc. became the largest penicillin producer in World War II. Kane’s innovations in the mass production of penicillin have had a significant impact on the world. The international penicillin program was one of the largest wartime initiatives and among the most significant scientific and technological achievements during World War II. In a matter of five years, penicillin went from low-yielding, labor-intensive surface fermentation in 1940 to mass production in 10,000-gallon tanks in 1945 (Short, 2021; Quinn, 2013). Military surgeons experienced the wonder drug of penicillin firsthand. Before the arrival of penicillin, the standard treatment for deep wounds by field hospital surgeons was to first cut away the dead, contaminated tissue and then remove dirt, shrapnel, and debris, and then leave wounds open to drain and heal. The recovery process took months, and infections were a leading cause of death among wounded soldiers. There was very little that physicians could do if bacterial infections spread into a wounded soldier’s bloodstream. For soldiers who suffered from cholera or gas gangrene during World War I, doctors had no effective treatment once their infections started spreading. After penicillin was made available on the battlefield, surgeons simply cleaned the wounds, sprinkled penicillin on the wounds, stitched them closed, and then sent soldiers to recover. “The saving of time and the better results obtained by the early healing of such wounds is practically unbelievable,” wrote one surgeon (Conniff, 2017; “Penicillin and the Antibiotic Revolution”, 2020).
Statistics on mortality rate differences before and after the introduction of penicillin highlight its historical impact. The number of lives saved by penicillin is incalculable. One source mentioned that during World War I, the Great War, 12 to 15% of wounded soldiers who were treated in battlefield hospitals died due to infections, with most infections being sepsis and gas gangrene. The mortality rate in subsequent wars was reduced to 3% due to the advent of antibiotics (Short, 2021). This dramatic reduction in mortality shows the extreme effectiveness of these mass-produced antibiotics and highlights the significance of fermentation methods and directly illustrates the real-world impact of Kane's deep-tank fermentation methods, which made such large-scale treatment possible. Statistics on mortality from PBS documentation are even more striking: Throughout history, infection has been a major cause of death in war, but the introduction of penicillin dramatically reduced mortality from bacterial pneumonia from about 18% in World War I to less than 1% in World War II (Markel, 2013). This comparison between the mortality rates of World War I and World War II emphasizes how technological advancements in production were essential in achieving these medical outcomes. Terramycin, a broad-spectrum antibiotic, is extremely effective against more than 100 different infectious organisms (“Zoetis History”, 2015). The effectiveness and the production methods of Terramycin illustrate the continued impact and versatility of fermentation-based antibiotic production, reinforcing Kane’s lasting influence on modern medicine. These outcomes further support the argument that medical breakthroughs depend not only on discovery, but on the systems that enable their mass production.
The impact of penicillin did not stop on the battlefield. During World War II, scarce penicillin was initially restricted to military use. However, when World War II ended, a massive supply of penicillin was available to civilian populations. The widespread availability of penicillin dramatically reduced deaths from bacterial infections that previously were major causes of mortality. Penicillin proved to be highly effective against diseases such as pneumonia, septicemia, rheumatic fever, and syphilis, leading to rapidly declining mortality rates and shorter recovery times for millions of patients. Public health data show that death rates from infectious diseases fell drastically in the late 1940s and 1950s, reflecting antibiotics’ growing impact on civilian populations (“Achievements in Public Health, 1900-1999: Control of Infectious Diseases”).
Silence on Innovators
Jasper Kane’s significant deep-tank fermentation contributions, which enabled mass production of penicillin, did not receive adequate credit. Furthermore, Pfizer’s contributions to penicillin production are also sometimes casually mentioned in popular media. However, the statistics showing that 90% of the penicillin carried by Allied forces on the Normandy Beach was produced by Pfizer, and 85% of the penicillin supplied to the civilian population after the war was also produced by Pfizer, are indisputable facts that highlight Jasper Kane and Pfizer’s contributions to the campaign of penicillin production during World War II (“Pfizer Today: Bringing Science to Life”). This suggests that historical narratives of penicillin have prioritized discovery over production, obscuring the importance of industrial contributors like Kane. This imbalance reflects a broader pattern in the history of science, where visible discoveries are often celebrated while the engineering systems that enable them remain overlooked.
Penicillin Supply Information (Pfizer Today)
This booklet is in a Pfizer archives collection at the Center for Brooklyn History. It shows statistics of penicillin production by Pfizer after the war. Specifically, it indicates that 85% of the penicillin supply to the civilian population after World War II was produced by Pfizer. This statistic highlights the scale of Pfizer’s production and further demonstrates the importance of deep-tank fermentation methods that enable large-scale production of antibiotics.
Additional sources further illustrate the impact of deep-tank fermentation methods as industrial standards used for decades after World War II. For many decades, deep-tank fermentation methods engineered by Dr. Kane have been used to produce antibiotics such as penicillin and Terramycin at Pfizer (American Chemical Society). Fermentation has remained a major chemical production process with carefully controlled physicochemical parameters that continue to improve production today (Haque, 2024). Together, these sources reinforce the long-lasting impact of Kane’s innovations.
Kane’s Legacy Continues
Mass production of penicillin saved countless lives worldwide and marked the beginning of the modern antibiotic era. For many decades, deep-tank fermentation methods engineered by Dr. Kane have been used to produce antibiotics such as penicillin and Terramycin at Pfizer (American Chemical Society). Fermentation has remained a major chemical production process with carefully controlled physicochemical parameters that continue to improve production today (Haque, 2024). Today, all natural penicillin drugs are produced by deep-tank fermentation, and many variations of the family of penicillin medications are based on a core structure of 6-APA, which is also produced by deep-tank fermentation. This continuity demonstrates that Kane’s work was not merely a wartime solution, but a foundational transformation in the chemical and pharmaceutical industries that continues to shape modern society.
Dr. Kane credited his success in developing this fermentation method to the Polytechnic Institute of Brooklyn. He said, “Polytechnic provided me with a very useful education. It gave me the discipline of a scientist and the courage to explore.” His legacy lives on. Through the deep-tank fermentation method, his $2 million donation to Polytechnic University (Rodengen, 2005), and the Jasper Kane Café, where students gather to study and collaborate, his impact continues to shape both scientific innovation and the academic community he helped support. Dr. Henry A. McKinnell Jr. said it best in his 2004 commencement address, “… Poly Saved the World” (McKinnell, 2004). In recognition of this achievement, the NYU Tandon School of Engineering renamed the café after Jasper Kane, and the American Chemical Society designated Pfizer’s development of deep-tank fermentation as a National Historic Chemical Landmark in a ceremony in Brooklyn on June 12, 2008 (American Chemical Society).
Conclusion
The introduction of deep-tank fermentation pioneered by Jasper H. Kane fundamentally transformed the chemical and pharmaceutical industries. Through carefully controlled aeration, mechanical agitation, and temperature and pH regulation, deep-tank fermentation methods ushered in a large-scale industrial chemical and pharmaceutical production era. It changed what was once slow and labor-intensive small-batch surface fermentation into a highly efficient, scalable, and continuously controlled industrial manufacturing system capable of producing life-saving drugs in massive quantities. Deep-tank fermentation remains a core production method in the pharmaceutical and biotechnology industries. Today, modern bioreactors, direct descendants of Kane’s system, are enhanced with advanced sensors, automation, and sterile engineering, and are used to produce many drugs, especially antibiotics, insulin, monoclonal antibodies, vaccines, and recombinant proteins. Deep-tank fermentation is also used to produce other chemicals and supplements such as organic acids, vitamins, and enzymes, as Dr. Kane discussed on the CBS Radio Network, Adventures in Science program, “Chemical progress” (Smithsonian Institution, Box 400 of 459, Folder 41, Record Unit 7091, 1954). In fact, deep-tank fermentation technology has been in continuous use from World War II to today. This enduring legacy confirms that Kane's contribution was not just a wartime solution, but a foundational transformation in how modern medicine is produced.
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