饲料用水解羽毛粉氧化水解胱氨酸的研究.pdf

10 3 Vol10, No3 2003 9 Journal of T ianjin Agricultural College September, 2003 : 1008 5394(2003) 03 0005 03 1 2 3 郭 亮 , 张丽英 , 张增菁 (1.,300384; 2. , 100094;3., 300211) :, , , 2. 32% ~ 3.01% , ; : ; ; : Q517; Q518. 1 :A Research on Oxidationhydrolysis of Cystine by Hydrolyzed Feather Meal for Feedstuffs 1 2 3 G UO L iang , ZH A N G L iy i ng , ZHA N G Zengj ing ( 1. Departm ent of Animal Science, Tianjin Agricultural College, Tianjin 300384, China; 2. Feed Industry Centre of M inistry of Agriculture , China Agricultural University, Beijing 100094, China; 3. T ianjin Quarantine Station of Animals, Tianjin 300211, China) Abstract: Cystine in hydrolyzed feather meal for feedstuffs was investigated by the reaction of oxidationhydrolysis w ith per fomic acid. Cystine was released from helical structure of protein, w hich was cross linked by disulfide bond of cystine. Cystine w as determined by the technique of liquid ion exchange in this experiment , the content of cystine was 2. 87% to 3.01% . Cys tine can influence the hydrolyzed degree of protein in hydrolyzed feather meal for feedstuffs. Moreover, Cystine w as influenced by the number of disulfide bond and the contents of free sulfurcontaining amino acids. Key words: cystine; disulfide bond; hydrolyzed degree of protein ( Hydrolyzed feather meal for feed) , ( 1) , , , , [ 1] , ( 2) , :2003 06 05 : ! ( 03114) :( 1965 ) , , , , , Email: Liangguo177@