饲料研究2024，Vol.47Issue(20)：69-74,6.DOI:10.13557/j.cnki.issn1002-2813.2024.20.013
米糠粕中非淀粉多糖体外酶解工艺研究
Study on enzymatic hydrolysis process of non-starch polysaccharides of rice bran meal in vitro
摘要
Abstract
The experiment aims to study the effects of xylanase,cellulase,and phytase on the degradation of non-starch polysaccharides in rice bran through in vitro enzymatic pre-digestion treatment.Experiment with defatted rice bran as the raw material,using single-factor experiments and response surface methodology to optimize the process conditions for the degradation of non-starch polysaccharides in rice bran by xylanase,cellulase,and phytase.The results showed that the optimum conditions for degradation of non-starch polysaccharides in rice bran meal in vitro were:pH value 3.7,temperature 50 ℃,xylanase content 2.0％,cellulase content 1.0％,phytase content 1.8％and enzymatic hydrolysis time 3.5 h.After enzymatic hydrolysis pretreatment,the reducing sugar in rice bran meal was increased by 7 531％,inositol was increased by 1 620％,the degradation rates of neutral detergent fiber,acid detergent fiber,acid detergent lignin and crude fiber were 47.4％,24.0％,12.1％and 21.3％,respectively,the degradation rates of phytic acid was 99.9％.The study indicates that enzymatic hydrolysis predigestion technology in vitro effectively reduced the content of anti-nutrition factors in rice bran meal and improved the nutritional value of rice bran meal.关键词
米糠粕/非淀粉多糖/木聚糖酶/纤维素酶/植酸酶Key words
rice bran meal/non-starch polysaccharides/xylanase/cellulase/phytase分类
农业科技引用本文复制引用
宣丽,权志中..米糠粕中非淀粉多糖体外酶解工艺研究[J].饲料研究,2024,47(20):69-74,6.基金项目
国家重点研发计划资助(项目编号:2023YFD1301801) （项目编号:2023YFD1301801）
