Preparation method of ergosterol

Abstract

The invention relates to a preparation method for producing ergosterol by using yeast, belonging to the technical field of fine chemical engineering. The preparation method comprises the following steps of: mixing the yeast with alkali and a sodium chloride solution, carrying out saponifying, performing extracting by using methylbenzene, and successively carrying out washing, concentrating, refining and drying in vacuum to obtain a finished ergosterol product. According to the preparation method of the ergosterol, the yeast, the alkali, the sodium chloride, the methylbenzene, the activated carbon, the ethanol and other common chemical raw materials and auxiliary materials and common chemical equipment are utilized, industrial production of the ergosterol is achieved, a production process is very simple and convenient, and production cost is low; the volatilization speed of the methylbenzene is low and is only 1 / 3 of the original volatilization speed of the methylbenzene; and through reasonable selection of the ratio of each solution and temperature control, the purity and yield of the ergosterol are effectively improved, so a raw material guarantee is provided for mass production of vitamin D2.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a method for preparing ergosterol. Background technique [0002] Ergosterol is the most important phytosterol, which exists in yeast and some plants. When it is irradiated by ultraviolet rays, one of the four carbon rings in the molecule breaks and becomes vitamin D 2 , which is industrially mass-produced vitamin D 2 main raw material. due to vitamin D 2 It is one of the trace organic compounds necessary for humans and animals to maintain normal life activities and health. Vitamin D can be added in moderation in medicines, food and feed 2 To meet the regular intake of people or animals from the outside world. Vitamin D 2 At present, the annual consumption in the world is about 1,800 tons, of which about 70% is used for feed additives. The annual demand in my country is about 100 tons, and vitamin D in my country 2 The annual production and sales volume of ergosterol ...

AI Technical Summary

Problems solved by technology

The defect of adopting this method is that the extraction yield with light ethanol is low; It can cause people to lose consciousness or even die, and it is flammable and explosive; the low temperature condition of -5°C increases the cost, so this method is difficult to realize industrial production, and the output of ergosterol also lower