Louis Pasteur’s postulates

Louis Pasteur’s main postulates left great legacies to humanity, because they were mostly based on curing and preventing pathologies. That’s why he promoted vaccines and took care to see one of the main roots of bacteria diseases and develop methods to eliminate them.

A breakthrough for science

One of his greatest discoveries was the aspects of “chirality”, realizing that when a solution of naturally manufactured nutrients is transferred, light turned to the right or left, but unlike artificial nutrients, the light did not rotate unless microorganisms or microbes were added. All these advances led him to further deepen until the technique of pasteurization was achieved.

This system is a process of heating the medium for a period of time, at an optimal temperature, which destroys the bacteria that cause food to sour. At first, the scientific community rejected it, but today, it guarantees the quality and hygiene of much of the food we eat.

Tartaric acid

This great scientist was able to scrutinize the mysteries of C4H606, or better known as tartaric acid, which appears to subsist on two equal modes of chemical composition, however with different properties, depending on whether it comes from something synthetic and artificial, which does not can polarize light; or some living being, who can do it. However, they have the same formula.

With the help of the microscope, he was able to spot certain crystals of very small salts, based on a synthesis of tartaric acid and discovered that there were two types of these crystals, very similar, but with similar shapes such as our feet or hands. The distinction lies in the form of grouping of atoms and the inclination of light polarization, to the left or right.

But when analyzing the crystals constituted of natural tartaric acid, only one type of these crystals was formed, which reflected light to the right. These advances were able to be achieved at a very young age: at 26 years old. Thanks to them, he was deserving of the Legion of Honour. In a very short time he held senior positions at prestigious universities, such as the University of Lille and the Ecole Normale Supérieure.

Microbiology: (Omne vivum ex vivo)

Like every revolutionary scientist, Pasteur managed to disprove several misguided myths and theories, such as in the fermentation process, of which the entire scientific community believed that it did not need the intervention of any other organism.

But when studying in depth with the microscope, Louis realized that there were always two active organisms in the fermentation, which were two yeasts of a different nature. One of them produces lactic acid that generates the sour in the wine. The other, alcohol.

It creates a new way to eliminate the bacteria responsible for the degradation of liquids such as milk, wine, tightly packed and exponents at a heat of 44 degrees Celsius, in a short period of time. At first, the big industrialists of the law refused to have to heat the drinks. But over time the appropriate and so was the emergence of what we now call “pasteurization.”

His investigations were totally focused on the structure of chemical substances, to demonstrate the laws of the organization of living beings, penetrating deeply into all the details of their forms.

In that sense, the responses to all the processes of decomposition and fermentation of food, the relationships of living organisms and the assertion in ancient times, the spontaneous generation of microorganisms in nutritious foods.

His experiments were basic and simple. For example, to be able to demonstrate these postulates, he used a few flasks with a filter that prevented the passage of dust to the culture broth, and a cover like the filter, but the shape of the alarm and the curvature of the flask, was very difficult to reach the dust particles, where the microbes went.

Thus, Pasteur confirmed that microbes are not generated inside the food, but adhere to the powder in the form of spores. That is to say, that a living being comes from another previous living being.

This principle so well described and argued by this genius, gave rise to postulate the germinal theory of diseases and cell theory. All this revolutionized the way of thinking about living beings and marked the beginning of this science called Microbiology.

His fame for these discoveries of great relevance, spread throughout the world. So much so, that the French government called him to help dissolve a terrible agricultural situation facing that nation, by a disease of silk worms that ruined the production of this crucial element in the industry. He used the scientific method to give a final solution and he succeeded.

Thanks to this dilemma, Pasteur was able to diagnose the mechanisms of contagion of the disease. Its solutions were radical: everything that has been infected, such as leaves and worms, must be eliminated so that it does not continue spreading.


Louis Pasteur’s postulates
Source: curiosities  
July 7, 2019

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