Who invented pasteurization louis pasteur

Before he began this crucial work, the scientific community regarded the theory of spontaneous generation as the cause of microbiological infestation — in short, that pathogens could arise naturally from nonliving matter.

Experimenting with wine, he showed that thermal processing would inactivate unwanted microorganisms in sterilized and sealed flasks that, when opened, allowed them to grow. From this point on, the concept that diseases can be caused by pathological infection shifted to preventing them from entering the human body.

Pasteur completed the first successful test on April 20, , eventually patenting the method we now know as pasteurization, which was soon applied to beer, juice, eggs, and most famously milk. This process also proved successful at destroying most yeasts and molds without causing a phase transition in the product.

Louis Pasteur in his lab performing experiments. Food can be pasteurized in two basic ways: either before or after being packaged into containers. When food is packaged in glass, hot water is used to lower the risk of thermal shock. If packaged in plastic or metal, steam can be used, since the risk of thermal shock is low. In general, most foods requiring pasteurization are liquid such as milk , and can therefore move through a continuous system comprised of a heating zone, hold tube, and cooling zone, from which the liquid is filled into packaging.

The pasteurization process. Pasteurization Type. In addition to these traditional methods of pasteurization, newer processes have been developed to pasteurize foods as a way of extending shelf life without refrigeration, reducing the effects on the sensory characteristics of foods, and preventing degradation of nutrients. A few examples include:. While pasteurization has helped provide safe, nutrient-rich milk and cheese for over years, some raw milk enthusiasts claim that pasteurization reduces the nutritional value of milk and that raw milk is a safe, healthier alternative if properly processed in a sterile environment.

Currently, both the CDC and the FDA dismiss these claims as lacking scientific evidence and affirm that raw milk remains less safe than pasteurized milk. Historically, milk has been a major source of foodborne illness when people increasingly migrated from rural to urban areas.

He then invented a process where bacteria could be removed by boiling and then cooling liquid. He completed the first test on April 20, Today the process is known as pasteurization. Shifting focus, in , Pasteur helped save the silk industry.

The federal government banned the sale of raw milk across state lines nearly three decades ago because it poses a threat to public health. Louis Pasteur is best known for inventing the process that bears his name, pasteurization. We strive for accuracy and fairness. If you see something that doesn't look right, contact us!

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He was married to Marie Antoinette and was executed for treason by guillotine in Periodically, we can describe the works and discoveries of Louis Pasteur into three phases:.

Louis Pasteur launched his remarkable scientific career as a chemist studying organic crystals. Through his comprehensive research on crystallography, chemistry and optics, Pasteur demonstrated that a crystal's shape, its molecular structure and its effect on polarized light are all interrelated. Stereochemistry or spatial chemistry which initiated the development of chemical synthesis was originated after Pasteur described this fundamental rule:.

Pasteur's discovery of molecular asymmetry occurred during experimentation on paratartrate crystals. He discovered that under polarized light, inactive substance became active due to fermentation. Based on his experiments, he associated fermentation with life which led him from studying molecular asymmetry to contagious diseases through fermentation. Pasteur laid foundation for all microbiological techniques through his research on lactic and alcoholic fermentation and defined these principles:.

Pasteur with his research and ingenious experiments on fermentation rejected the long prevailing spontaneous generation theory. In his paper in , he explained that airborne dust carried the germs of yeasts and microorganisms present during the fermentation process. And even the most perishable liquids could be preserved if they were kept away from these germs. Through different innovative yet simple experiments involving grapes, fermentable solutions and swan-neck flask he clinched the spontaneous generation argument.

Pasteur continued his research and applied his microbiological techniques to agricultural and industrial sectors successfully. His pasteurization process concluded that all fermentable liquid could be prevented from a spoiling with a special heating treatment. The silkworm disease destroyed the silk industry all over the world in Although, Pasteur had no idea about silkworms but he was asked by the Department of Agriculture to investigate this disease.

His microscopic study of the worms revealed that the disease was caused by shiny corpuscles.