JPS6299353A - Extraction of amino acid from compost - Google Patents

Abstract

PURPOSE:To obtain amino acids utilizable for foods, cosmetics, etc., at a low cost, by fermenting a hydrated raw material of compost produced by mixing animal dung, rice straw, sawdust, etc., and hydrolyzing the fermentation product with hydrochloric acid under heating. CONSTITUTION:A compost raw material having a water-content of 65% is produced by mixing (A) 80% dung of an animal such as cattle, pig, chicken, etc., available as a stock-raising waste and (B) 20% agricultural waste such as rice straw, sawdust, etc. The raw material is fermented for 10-15 days under aerobic condition, subjected to the secondary fermentation for 20-30 days and fermented for about 6 months under occasional turning and stirring to obtain a completely fermented compost. The compost is hydrolyzed with hydrochloric acid under heating and the product is filtered to obtain liquid or powdery amino acid.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention involves mixing livestock manure, such as cow manure, pig manure, chicken manure, etc., with rice straw, sawdust, etc., as a compost raw material containing moisture, and making it into lIO, and from this fermented compost. This invention relates to a method for extracting amino acids from compost.

(Conventional technology) Proteins from corn, soybeans, etc. are hydrolyzed with hydrochloric acid to produce amino acids! Means for separating l1lff compounds and separating various amino acids from this amino acid mixture are well known;
α-Amino acids are produced by various mixing methods.

Recently, the effective use of agricultural waste and livestock waste has been actively researched, and the conversion into feed and compost has been promoted, but the use of various components generated along with composting is not sufficient.

The method of separating amino acids using agricultural products such as corn and soybeans is expensive because it uses valuable agricultural products as raw materials, and the method of producing α-amino acids by synthesis requires advanced technology and expensive equipment. Manufacturing costs are high.

(Problems to be Solved by the Invention) There was a problem in how to inexpensively produce amino acids using agricultural wastes such as rice straw and sawdust, and livestock wastes such as livestock manure.

(Means for Solving the Problems) The present invention provides a means for extracting amino acids using agricultural wastes such as rice straw and sawdust, and livestock wastes such as cow manure, pig manure, and chicken manure. III, the Ht fertilizer raw material containing water is mixed with animal manure, rice straw, sawdust, etc.
This is a method for extracting amino acids from compost, which is characterized by fermenting the compost, heating and hydrolyzing the fermented compost with hydrochloric acid, and filtering it to obtain liquid or powdered amino acids.

(Example) The present invention will be described in detail.

A compost raw material mixed with 180% beef, 20% rice straw and sawdust and containing 65% water is subjected to primary fermentation under aerobic conditions in a fermentation facility for 10 to 15 days.

During this second fermentation, the temperature is about 70°C, and E. coli, mites, etc. contained in cow dung, sawdust, etc. are killed, and fibrous substances are decomposed.

Next, the raw material subjected to secondary fermentation is subjected to secondary fermentation for 20 to 30 days to promote decomposition and fermentation under aerobic conditions.

Next, the secondary fermented raw materials are transferred to a fully ripened compost manufacturing facility,
I'11 JfC is fully ripened in about 6 months after cutting and stirring.
Fertilize.

The ripened fermented compost was taken out and poured into a mixture of hydrochloric acid and 'M water, heated and hydrolyzed, and after the required time, coarsely filtered, and then filtered through a 3 micron mesh sieve to extract liquid amino acids. obtain. Further, this liquid amino acid is heated to evaporate water to obtain a powdered amino acid.

(Experiment example) IW fertilizer raw materials with a ratio of 30% cow lA, 20% rice straw and sawdust, and 65% moisture were used as fully ripened III jffl fertilizer, and 50g of this fully fermented compost and hydrochloric acid (temperature 35%>
Mix 500 cc and 500 cc of purified water at a temperature of 58°C.
Heat at ~60°C for about 90 hours. After heating, take out 550 cc and filter for about 15 minutes, filter through a 3-micron mesh sieve for 25 minutes, and heat for about 2 hours to evaporate moisture. As a result, 1.6 g of powdered amino acid was obtained.

The composition of the amino acids thus obtained is shown in Table 1.

Table 1 (Effects of the Invention) The present invention mixes livestock manure, rice straw, sawdust, etc., ferments the compost raw material containing water, and heats and hydrolyzes the fermented compost with hydrochloric acid to extract amino acids, thereby producing livestock waste. Since it is possible to effectively utilize 1 q of livestock manure, which is known as agricultural waste, and to effectively utilize rice straw, sawdust, etc., which are considered agricultural waste, it is possible to produce foods, cosmetics, etc. containing amino acids at low cost.

Claims (1)

[Claims] It is characterized by fermenting a compost raw material containing water by mixing animal manure, rice straw, sawdust, etc., heating and hydrolyzing this fermented compost with hydrochloric acid, and filtering it to produce liquid or powdered amino acids. How to extract amino acids from compost.