In this article we will discuss about the production of various enzymes. 1. Pectinases: During the survey of crops for disease occurrence, it was observed that certain soft-rot causing bacteria produced pectolytic enzymes.The wilt disease induced by Fusarium species also produced pectinases as observed by Gothoskar 1955 and Waggoner and Dimond (1955). It was Scheffer and others who in the [...]
In this article we will discuss about the production of various vitamins. 1. Vitamin B12 (Cyanocobalamine): G.R. Minot and W.B. Murphy (1926) studied that liver extracts cure pernicious anaemia in human beings. In 1936, both of them shared a Nobel Prize in medicine for this discovery. After this, E.L. Ricke and L. Smith (1948) isolated and crystallized vitamin B12 from [...]
In this article we will discuss about:- 1. Discovery of Citric Acid 2. Fermentation of Citric Acid 3. Recovery. Discovery of Citric Acid: This acid was first produced commercially by John and Edmund Storage Company in UK in the year 1826. Scheele (1789) reported the isolation and crystallization of the four constituents of lemon juice. Grimoux and Adams (1880) synthesized [...]