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Industrialized one-step method for degreasing housefly larvae protein powder

A technology of housefly larvae and protein powder, applied in the direction of animal protein processing, etc., can solve problems such as restricting the development of the industry, and achieve the effects of short production cycle, simple operation and lower production cost.

Inactive Publication Date: 2012-08-22
本溪恒远生物医药科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned drawbacks existing in the prior art have seriously restricted the development of this industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The present invention studies the protein content in various stages of the housefly larval life history, and finds that the protein content is the highest in the early pupal stage. It was therefore determined to harvest larvae at the prepupal stage. After harvesting, let it stand for 2h-6h to clear the intestines, so as to discharge the dirt in the body.

[0016] In order to completely remove the residual feed mixed in the larvae, the larvae are placed in a container with a density of 1.08g / cm 3 -1.09g / cm 3 In the NaCl solution, using the difference in density between the residue and the larvae, the remaining feed sinks and the mature larvae float up. The larvae in the upper layer were picked up, placed in the fourth-stage cleaning tank, and countercurrently washed in the fourth-stage to remove NaCl and body surface secretions on the body surface.

[0017] Insect phenoloxidase (phenoloxidase, PO) is an important immune defense factor, which usually exists in the hemo...

Embodiment 2

[0021] Separate the larvae that have grown to the early stage of pupae from the larva rearing box, leave the larvae for 2 hours to clean the intestines, and then place the larvae after the intestines cleansing at a density of 1.09g / cm 3 In the NaCl solution, the mixed residual feed was precipitated. Harvest the upper layer larvae, wash with fourth-grade clear water, and remove NaCl and secretions on the body surface. Harvested larvae were denatured at 70°C. The denatured larvae are squeezed out of the pulp. Filter to remove solids in the insect pulp, and place the harvested insect pulp at 40°C for vacuum drying. Crush the dried material to a particle size of 60 mesh sieve. with supercritical CO 2 Extraction equipment to remove fat. The pressure of the extraction kettle is 30MPa, the temperature is 43°C, the time is 3.5h, CO 2 The flow rate is 28kg / h. Extraction with supercritical CO 2 For the separation of the solvent, the pressure of the separation tank is 8MPa, and t...

Embodiment 3

[0023] The larvae that had grown to the pre-pupal stage were isolated from the larval rearing box, and left to stand for 4 hours to clear the intestines. Place the larvae after bowel cleansing at a density of 1.08g / cm 3 In the NaCl solution, the mixed residual feed was precipitated. Harvest the upper layer larvae, wash with fourth-grade clear water, and remove NaCl and secretions on the body surface. Harvested larvae were denatured at 75°C. The denatured larvae are squeezed out of the pulp. Filter to remove the solid matter in the insect pulp, and place the harvested insect pulp at 60°C for vacuum drying. Crush the dried material to a particle size of 80 mesh sieve. with supercritical CO 2 Extraction equipment to remove fat. The pressure of the extraction kettle is 25MPa, the temperature is 38°C, the time is 1.5h, CO 2 The flow rate is 15kg / h. The pressure of the separation tank is 6MPa, and the temperature is 33°C. The product was an off-white defatted housefly larva...

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PUM

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Abstract

The invention provides an industrialized one-step method for degreasing housefly larvae protein powder, comprising the following steps of: (1) collecting larvaes, cleaning intestines, and removing remained feed with NaCl solution; (2) carrying out heat treatment to the larveaes for denaturation; (3) squeezing the larvaes and drying larvae slurry; (4) grinding the dried larvae slurry; and (5) removing larvae fat from the larvae slurry powder by using a supercritical CO2 extraction device, wherein the extract is separated from solution only once and conditions of the method are follows: extraction pressure is 20-35MPa, extraction temperature is 31-45 DEG C, extraction time is 1-4 hours, CO2 flux is 10-30kg / h and separation pressure is 25-35 DEG C. In the method, a series of strict pretreatments are carried out to housefly larvaes, fat in larvae slurry powder is removed, and degreased housefly larvae composite protein powder with high quality and purity is obtain in one step. The degreased housefly larvae composite protein powder contains rich vitamins, trace elements and active peptides, besides protein with high quality and purity. The method solves the problem of degreasing housefly larvae protein.

Description

technical field [0001] The invention relates to a method for preparing housefly compound protein powder, in particular to an industrial one-step method for degreasing housefly larvae protein powder. Background technique [0002] The protein content of the dry powder of housefly (Musca domestica) larvae is as high as more than 55%. Housefly larvae not only have high protein content, but also contain 18 kinds of amino acids in the protein, which contains a complete range of amino acids. 8 essential amino acids for humans (i.e. amino acids that cannot be synthesized or transformed by humans): lysine, methionine, phenylalanine, tryptophan, valine, threonine, leucine, isoleucine, etc. Rich, the total amount of essential amino acids is 2.2 times that of fish meal. To evaluate the level of protein nutrition, in addition to considering the types and quantities of essential amino acids, it is also necessary to consider whether the ratio of these amino acids meets the needs of the h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23J3/04
Inventor 杜荣骞
Owner 本溪恒远生物医药科技有限公司
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