JPH0116141B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for removing off-flavors from amino acids derived from animal materials.

Amino acids are important nutrients, have excellent taste, are essential for foods, and are produced and consumed in large quantities. Methods for producing amino acids include methods that utilize microorganisms and methods that involve acid decomposition of animal or plant materials. At present, the method of producing amino acids by

However, when animal raw materials are hydrolyzed with hydrochloric acid or sulfuric acid, unlike when hydrolyzing vegetable raw materials, amines, ammonia, etc. are produced in addition to amino acids due to differences in the freshness of the raw materials or due to over-decomposition. It is something. However, during acid decomposition, these substances combine with hydrochloric acid or sulfuric acid to form hydrochloric acid and sulfuric acid salts and are shielded. However, when these are neutralized, odors such as ammonia and amines come out, which is a problem when animal raw materials are used.

The present invention has been made to solve these drawbacks, and has been developed from biological and chemical aspects in order to establish the most effective method not only from the deodorizing effect but also from the viewpoint of food safety. As a result of various studies, it was completely unexpectedly discovered that the use of acetic acid is highly effective, and the present invention was completed based on this finding.

That is, the present invention is a method for removing off-flavors from amino acids, which is characterized by adding acetic acid to amino acids obtained by acid decomposition of animal materials.

In the present invention, the off-odor of the amino acid solution can be sufficiently removed by simply adding and mixing a predetermined amount of acetic acid to the amino acid solution and leaving it for about 2 hours to half a day, so there is no need for delicate operations. ,
It is suitable as an industrial method since it can be processed in large quantities. Moreover, in this case, it is possible to completely remove foreign odors from the amino acid solution without causing any harmful side reactions, so it is also extremely effective in terms of deodorizing effect.

Furthermore, acetic acid is commonly used as a seasoning and is very cheap, so it can be added to food in large quantities from both a cost and safety standpoint, and it can cause food pollution. The desired deodorizing effect can be achieved safely without causing any problems.

Examples of the present invention will be described below.

Example: Add 1 part acetic acid (95%) to 2000 amino acids of T.N3.2 produced by acid decomposition of animal materials, and add 4 to 5 parts after applying it to a homomixer or homogenizer.
Leave to stand for a while, then add fine powder of acid clay to amino acids.
500g to 100g per 2000 was added and treated with a homomixer or homogenizer for 10 to 20 minutes.

Animal odors and other off-flavors completely disappeared from the amino acids subjected to this treatment, and they could be used immediately as seasonings and other foods.

Claims (1)

[Claims] 1. A method for removing off-flavors from an amino acid solution, which comprises adding acetic acid to an amino acid solution obtained by acid decomposition of animal raw materials.