Method for removing odor of silkworm pupa protein by utilizing yeast fermentation

Abstract

The invention discloses a method for removing odor of silkworm pupa protein by utilizing yeast fermentation, which comprises the following steps of: performing crushing, defatting, protein extraction, precipitation and desalting on dry silkworm pupa, adding active dry yeast which is 0.1 to 0.5 percent based on the weight of protein slurry into the desalted protein slurry, uniformly mixing, fermenting at the temperature of between 32 and 37 DEG C for 20 to 90 minutes, and drying to prepare the silkworm pupa protein. The method has the advantages of simple process and good deodorization effect.

Description

【Technical field】 [0001] The invention relates to a food processing method, in particular to a method for removing the odor of silkworm chrysalis protein. 【Background technique】 [0002] my country is a big country for raising silkworms, and the output of silkworm cocoons ranks first in the world, accounting for 70% of the world's total cocoons. Silkworm chrysalis is the main by-product after silk reeling in silk factories. Usually, 1 to 1.5 tons of silkworm chrysalis can be obtained by reeling 1 ton of raw silk. Silkworm chrysalis is rich in nutrients. Dried silkworm chrysalis contains 25%-30% fat, 55%-60% protein, 2%-4% polysaccharide, and 2%-3% chitin. Silkworm chrysalis protein contains 18 kinds of amino acids needed by the human body, of which essential amino acids account for the total More than 40% of the amino acid content, the ratio of 18 kinds of amino acids and the content of essential amino acids are in line with the ideal protein model stipulated by FAO / WHO, which...

AI Technical Summary

Problems solved by technology

[0002] my country is a big country for raising silkworms, and the output of silkworm cocoons ranks first in the world, accounting for 70% of the world's total cocoons. Silkworm chrysalis is the main by-product after silk reeling in silk factories. Usually, 1 to 1.5 tons of silkworm chrysalis can be obtained by reeling 1 ton of raw silk. Silkworm chrysalis is rich in nutrients. Dried silkworm chrysalis contains 25%-30% fat, 55%-60% protein, 2%-4% polysaccharide, and 2%-3% chitin. Silkworm chrysalis protein contains 18 kinds of amino acids needed by the human body, of which essential amino acids account for the total More than 40% of the amino acid content, the ratio of 18 kinds of amino acids and the content of essential amino acids are in line with the ideal protein model stipulated by FAO / WHO, which is a high-quality protein resource; Pupal odor greatly limits its development and utilization

At present, the methods used for silkworm chrysalis protein deodorization mainly include: organic solvent method, oxidation method, distillation method and adsorbent method, etc. Among them, organic solvent method, distillation method and adsorbent method generally have complicated process, long time and high cost. However, although the oxidation method is low in cost, its deodorizing effect is not good due to the return of odor.