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A cottonseed meal, detoxification technology, applied in animal feed, animal feed, food science and other directions, can solve the problems of affecting the color and taste of protein, the detoxification effect is also very different, and the nutritional value of cottonseed meal is reduced. Heat denaturation, easy to promote and apply, good taste effect
Inactive Publication Date: 2016-02-24
INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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Problems solved by technology
[0008] However, using the above-mentioned or because of the serious miscibility and azeotropic phenomenon of the two solvents, separation and recovery are difficult, the solvent consumption is large, and there are many residues; or because the protein is denatured due to high temperature, the material is brown, which affects the color and mouthfeel of the protein; or because The addition of detoxification agents leads to a decrease in the nutritional value of cottonseed meal, which reduces the effectiveness of lysine and the utilization of amino acids while reducing toxicity
At the same time, due to different specific methods, the detoxification effect varies greatly, making it difficult to form large-scale production
Some methods also seriously damage nutrients such as protein and total amino acids.
Method used
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Embodiment 1
[0033] The present embodiment is the method for cottonseed meal detoxification, specifically comprises the following steps:
[0034] (1) First put the cottonseed meal into the barrel, then put the cottonseed meal and 95% ethanol into the extraction tank according to the ratio of solid to liquid: 1g: 5ml, control the temperature at 50°C, and extract for 2h;
[0035] (2) Separate the extracted mixed solution, then continue to add 95% ethanol to the extraction tank according to the ratio of material to liquid: 1g: 5ml, control the temperature to 50°C, and extract for 2h;
[0036] (3) Step (2) is repeated 3 times;
[0037] (4) Separating the extracted mixed liquid, taking the cottonseed meal out of the extraction vessel, and evaporating under reduced pressure to remove the residual ethanol, to obtain the detoxified cottonseed meal.
[0038] The color of the detoxified cottonseed meal obtained by the above method is light yellow and near white, the protein content is high, reachin...
Embodiment 2
[0040] The difference between the present embodiment and Example 1 is only: the solid-liquid ratio of cottonseed meal and 95% ethanol is different, in the present embodiment, in step (1), step (2) and step (3) press cottonseed meal and The solid-liquid ratio of ethanol is 1g: 3ml of ethanol is added.
[0041] The color of the detoxified cottonseed meal obtained by the above method is light yellow and near white, the removal rate of gossypol is 95%, and the content of free gossypol is 495 mg / kg.
Embodiment 3
[0043] The difference between this embodiment and Example 1 is that the conditions of extraction conditions are different. In this embodiment, the extraction conditions in step (1), step (2) and step (3) are that the control temperature is 45 ° C, and the extraction 1.5h.
[0044]The color of the detoxified cottonseed meal obtained by the above method is light yellow and near white, the removal rate of gossypol is 93%, and the content of free gossypol is 693 mg / kg.
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Abstract
The invention relates to the field of processing of agriculture products, in particular to a method for detoxifying cottonseed cake meal. The method specifically comprises the following steps of (1) putting the cottonseed cake meal and alcohol according to a feed liquid ratio of the cottonseed cake meal to the alcohol being 1-2g: 3-6ml into an extraction container, wherein the temperature is controlled to 45-55 DEG C, and the extraction time is 1.5-2 hours; (2) separating extracted mixed liquor, and then continuing adding the alcohol to the extraction container according to the feed liquid ratio of the alcohol to the extraction container being 1g: 3ml, wherein the temperature is controlled to 45-55 DEG C, and the extraction time is 1.5-2 hours; (3) repeating the step (2) 2-3 times; and (4) separating the extracted mixed liquor, taking out the cottonseed cake meal from the extraction container, and performing decompression vaporization to remove residual alcohol so as to obtain the detoxified cottonseed cake meal. According to the method disclosed by the invention, extraction is performed under the conditions of medium temperature and low temperature, so that the characteristics and the nutrient components of objective products can be maintained not to be damaged, after the extraction, the volatility of the alcohol is good, and the problem that a solvent remains can be well solved.
Description
technical field [0001] The invention relates to the field of agricultural product processing, in particular to a method for detoxifying cottonseed cake. Background technique [0002] Gossypol, also known as gossypol or gossypol, is a yellow polyphenolic substance formed in cotton plants. Gossypol in gossypol can be divided into free gossypol FG and bound gossypol BG. The sum of the two is called total gossypol. Excessive intake of free gossypol by animals can lead to poisoning, manifested as loss of appetite, weight loss, general edema, weakness, dyspnea, severe myocardial damage, visceral congestion and edema, and even death. The Food and Agriculture Organization of the United Nations stipulates that the content of gossypol in detoxified cottonseed meal is less than 0.065%; the World Health Organization stipulates that the content of gossypol is less than 0.04%; my country's feed hygiene standards (GB / T13078-2001) stipulate that the amount of gossypol added is 1200mg / kg. ...
Claims
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Application Information
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