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Method for preparing Caragana microphylla protein

A technology of protein and Caragana, applied in the field of plant protein, can solve the problems of high content, long residence time, difficult for animals to digest and utilize, etc., and achieve the effect of broad application prospects

Inactive Publication Date: 2009-05-20
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high content of crude fiber and lignin in caragana, poor palatability, it stays in the digestive tract of livestock for a long time, and it is difficult for animals to digest and utilize, which affects the feed intake of livestock, so it is not suitable for direct feed.
[0003] At present, caragana is basically crushed directly, fermented with enzyme preparations or microbial agents, and then directly fed to livestock. Based on the high protein content of caragana, it is necessary to find a method to improve protein utilization.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing caragana protein, crushing fresh caragana leaves and twigs through 40 meshes, weighing 1kg caragana powder, adding water as the material: water = 1:2, beating for 10 minutes, soaking at 25°C for 6 hours, The pulp was beaten twice for 20 minutes, the juice was squeezed through plate and frame filtration, the juice was heated to 80°C, the protein was flocculated for 10 minutes, the precipitate was obtained by centrifugation at 3000r / min for 10 minutes, and the caragana protein product was obtained by freeze-drying.

[0022] Its protein extraction rate is 33.8%.

Embodiment 2

[0024] A method for preparing caragana protein, crushing dry caragana leaves or twigs through 40 meshes, weighing 1kg caragana powder, steam explosion at 121°C for 10 minutes, adding water as the material: water = 1:4, beating for 15 minutes , soaked at 35°C for 5 hours, beat twice for 15 minutes, centrifuged to remove slag, heated the juice to 75°C, flocculated the protein for 20 minutes, filtered the precipitate through membrane, and dried it naturally to obtain the caragana protein product.

[0025] The extraction rate of caragana protein is 28.7%.

Embodiment 3

[0027] A method for preparing caragana protein, crushing dried caragana leaves and twigs through 40 meshes, weighing 1kg of caragana powder, high-pressure treatment for 30 minutes, adding water as the material: water = 1:6, beating for 20 minutes, 40 Soak for 4 hours at ℃, beat for 10 minutes for the second time, adjust the pH of the juice to 3.5 after membrane filtration to remove slag, flocculate the protein for 20 minutes, centrifuge to obtain a precipitate, and dry at 50℃ to obtain caragana protein product.

[0028] The extraction rate of caragana protein is 37.2%.

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Abstract

The invention relates to a method for preparing caragana microphylla protein, in particular to a method for preparing the caragana microphylla protein through using fresh or dry caragana microphylla leaf and / or twig as raw materials and belongs to the technical field of plant protein. The fresh or dry caragana microphylla leaf and / or twig is subjected to different pretreatments, water addition, pulping, soaking, re-pulping, residue-liquid separation, flocculation and separation to obtain the protein; and the protein is dried to obtain the caragana microphylla protein. The caragana microphylla protein prepared by the method has yellow color, the extraction rate of more than 30 percent and coarse protein content of more than 25 percent, can be used for feeding, can be used in food, medicine, cosmetics and other industries through further processing and has quite wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of plant protein, and relates to a method for preparing caragana protein from fresh or dried caragana leaves or / and twigs, in particular to a preparation method of caragana protein. Background technique [0002] Caragana, scientific name Caragana, is a perennial legume, and Caragana is a deciduous shrub. Caragana has deep roots and luxuriant leaves, high coverage, drought resistance, cold resistance, high biomass, vigorous growth, windproof and sand-fixing characteristics. At the same time, branches, leaves, flowers and seeds have good feeding nutritional value, and the yield of fresh grass per mu About 700kg, it is a good feed resource for the development of animal husbandry in mountainous areas. Caragana has a high crude protein content (14%-31%), serious lignification, and a crude fiber content of 20%-40%. At present, the utilization of caragana is limited to animal husbandry, but it is rarely used as f...

Claims

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Application Information

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IPC IPC(8): A23K1/14A23K20/147
Inventor 贾士儒江建梅史晓光郑文科乔长晟谭之磊
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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