Process for preparing tussah pupa oil having the function of adjusting blood fat

Abstract

A process for preparing tussah pupa oil having the function of adjusting the blood fat is characterized by comprising a tussah pupa pretreatment of selecting living pupae of tussah cocoons, washing and removing the moisture of tussah body surface; a drying treatment of drying the tussah pupae with the water content being 6-8% in an electromagnetic microwave oven at the temperature of 50-70 DEG C in the electromagnetic microwave oven; a crushing treatment of crushing the dried tussah pupae to a particle size from 20 to 40 meshes; an extraction treatment of extracting the tussah pupa powder by supercritical CO2 extraction, wherein the pressure in an extraction kettle ranges from 25 to 35 Mpa with the temperature therein being 35-45 DEG C, the pressure in separating kettle I ranges from 6 to8 Mpa with the temperature therein being 40-50 DEG C, the pressure in separating kettle II ranges from 3 to 5 Mpa with the temperature therein being 35-45 DEG C, the total extraction time is 2 to 3 hours, and the extraction yield is 89.5-93.9%; a refining treatment of using the high temperature stationary method of refining the extracted tussah pupa oil at the temperature of 100-120 DEG C for 30-60 min, cooling by 10-30 DEG C, standing for 12-24 hours and filtering to produce the pure tussah pupa oil. The process for preparing tussah pupa oil in the invention is scientific and reasonable, can maintain effective components in tussah pupae by physical method in the whole process, and has advantages of high extraction rate of tussah pupa oil and good quality of the oil product.

Description

technical field [0001] The invention relates to a production process of biological oil, in particular to a production process of tussah silkworm chrysalis oil with the function of regulating blood fat. Background technique [0002] Tussah chrysalis is the main by-product of the silk industry. China is the main producer of silk, about 80% of the world. China can produce more than 500,000 tons of fresh tussah chrysalis every year, but it is underutilized and only a small amount is used as insect food. The content of unsaturated fatty acids in tussah pupa oil is more than 78%, especially the content of α-linolenic acid is more than 40.38%, and the total amount of oleic acid, linoleic acid and a-linolenic acid (EPA, DHA) is 75.19%. It is a rare new variety resource rich in α-linolenic acid. In nature, unsaturated fatty acids are mostly distributed in plants, and there are many plants containing oleic acid and linoleic acid, but there are only a few plants containing α-linolenic...

AI Technical Summary

Problems solved by technology

[0003] In the existing production process of tussah silkworm chrysalis oil, the drying step of tussah silkworm chrysalis usually adopts an ordinary drying box at a high temperature of 110 ° C for 1 to 1.5 hours, and then drying at 80 ° C; supercritical CO 2 The extraction method of the pupal oil extraction step is too simple, and the selected process parameters are unreasonable

Due to the high-temperature ordinary drying method, and the water content of tussah silkworm chrysalis is required to be below 5%, often due to uneven drying and long drying time, the water content of tussah silkworm chrysalis is too low. Although it is beneficial to the crushing of subsequent steps, it will lose Active ingredients in tussah silkworm chrysalis; due to supercritical CO 2 The extraction method of the pupal oil extraction step is too simple, the selected process parameters are unreasonable, and there are shortcomings such as low extraction rate and poor oil quality.