Method for hydrolyzing feather to extract amino acid through microwave heating at high temperature and high pressure

Abstract

The invention discloses a method for hydrolyzing feather to extract amino acid through microwave heating at high temperature and high pressure, which belongs to the amino acid manufacture field; According to the invention, feather and ultrapure water are taken as raw materials, no catalyst is used, a microwave high pressure ceramic reaction vessel is taken as a device, the reaction is carried out at the condition that the temperature is 160-200 DEG C, the pressure is 0.3-1.7MPa and the reaction time is 1/6-1 hour, and a mixed liquor of arginine, glycine, proline, aspartic acid, cystine and the like can be obtained after reacting. The production method has the advantages that no soda acid is used, the cost is greatly reduced, no pollution is generated, the reaction time is short; the destroy rate of amino acid in a filtrate is reduced, the process of filtrate post-treatment is simple, the output rate is increased; the production technology is simple, the reaction condition is mild, and the production method has the characteristics of high efficiency and environmental protection.

Description

Technical field: [0001] The invention belongs to the field of amino acid production, and in particular relates to a method for extracting amino acids by using feathers as raw materials and hydrolyzing the feathers with microwave heating at high temperature and high pressure. Background technique: [0002] Due to the huge demand for poultry meat products in the global market, a large amount of feathers are produced during poultry slaughtering and processing, resulting in millions of tons of feather waste every year. If these feathers are discarded directly, they will rot and degrade under natural conditions for a long time and rot The smell pollutes the environment; such as incinerating and landfilling requires a lot of manpower and material resources, it may also cause secondary pollution and waste precious resources. Because feathers contain a large amount of protein, degrading them into amino acids by chemical methods can avoid the pollution of feather waste and has good e...

AI Technical Summary

Problems solved by technology

[0003] At present, the conventional method of degrading feathers into amino acids is the acid hydrolysis method. The acid hydrolysis method cleans the feathers and sends them into the acid hydrolysis tank. Add hydrochloric acid with a concentration of 35%-40%, the amount is about 3 times the weight of the feathers, and heat while stirring. , at a temperature of 110°C-115°C, stir and degrade for 8-10 hours to obtain the amino acid hydrolyzate of all the feathers, and then use liquid alkali to neutralize for 10 hours before entering the follow-up section; the main defects of this method are: The hydrolysis and neutralization time is as long as 20 hours; a large amount of hydrochloric acid and liquid alkali are consumed, and the production cost is high; waste acid and waste alkali are heavily polluted; long hydrolysis and neutralization time lead to high energy consumption; the purification process of the obtained filtrate is complex, and Some amino acids are destroyed by long-term high temperature and acid-base

The second method of degrading feathers is the high-temperature and high-pressure water method. This method has been seen in the patent ZL200610026221.1. This method has greater advantages than the acid hydrolysis method. It uses high-temperature and high-pressure water with small mass transfer resistance and large diffusion coefficient. Using it as the reaction medium, the feathers can be degraded into amino acids without a catalyst. The whole reaction is pollution-free and takes a short time. Compared with the acid hydrolysis method, it has obvious advantages, but its disadvantage is: the action of high temperature and high pressure water will destroy some The structure of amino acids, and the overall yield is slightly lower

After searching, we have not found any published patent applications related to similar production methods, nor have we seen reports in relevant magazines and exchanges in relevant academic conferences