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Research on fermented feed produced from Korshinsk Peashrub and its protein extraction

Fan Lihua,Jia Shiru,Zhong Cheng,Liu Jie,Guo Ainan,Wang Rui  
The foliage branch of Korshinsk Peashrub is rich in protein and lignincellulose.To improve the utilization of Korshinsk Peashrub,the nutritional value of leaf protein concentration produced from alkaline extraction and the fermented feed produced from residue of protein extraction were studied.The results showed that: the yield of leaf protein concentration was 15.4%,and the LPC contained many kinds of amino acids(tryptophan was not determined) and the protein content was 31.5%;methionine and cystine were the limiting amino acids;the chemical score of LPC was 58.6%,which was higher than wheat(40%) and corn(43%);In addition,the residue produced from Korshinsk Peashrub protein extraction could be directly used to produce fermented feed;optimized conditions were 30 ℃,5%inoculum,1:1.5 feed-water ratio,5 d fermentation time;the fermented feed produced in this condition was a good animal feed with unmoldy,bright yellow,good texture,a sour flavor,and pH 4.06,besides the total score was up to 70.65 points according to the V-Score ratings system.
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