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当前位置: 首页 > 文章 > 白腐真菌产木聚糖酶降解半纤维素及改善肠道微生态平衡作用 食品科学 2013,34 (17) 313-316
Position: Home > Articles > Xylanase from Pleurotus ostreatus SYJ-042 Degrades Hemicellulose and Ameliorates Intestinal Microeological Balance FOOD SCIENCE 2013,34 (17) 313-316

白腐真菌产木聚糖酶降解半纤维素及改善肠道微生态平衡作用

作  者：
李天歌;岳晓禹;李自刚;蔡青和
单  位：
河南牧业经济学院质检系;四川农业大学食品学院;中国农业大学食品科学与营养工程学院
关键词：
白腐真菌;木聚糖酶;应用
摘  要：
以白腐真菌菌株PleurotusostreatusSYJ-042为研究对象,对该菌株产木聚糖酶进行果皮和动物饲用效果研究。果皮效用实验结果表明:酶液对果皮粉中半纤维素的降解随反应时间的延长降解率增加,反应5h的降解率就达到了62.44%。动物实验结果表明:实验组大鼠的采食量比对照组要高,差异极显著(P<0.01),日增重比对照组要高,差异极显著(P<0.01);实验组大鼠对饲料中半纤维素降解率数值与对照组相比没有差异显著;与对照组相比,实验组大鼠空肠部位的总菌数有显著差异(P<0.01),盲肠部位的总菌数没有显著差异,结肠中总菌数要显著低于对照组(P<0.01)。因此,木聚糖酶有利于果皮的脱皮,能促进大鼠的生长,改善肠道微生态平衡。
译  名：
Xylanase from Pleurotus ostreatus SYJ-042 Degrades Hemicellulose and Ameliorates Intestinal Microeological Balance
作  者：
LI Tian-ge;YUE Xiao-yu;LI Zi-gang;CAI Qing-he;College of Food Science, Sichuan Agricultural University;Department of Quality Detection and Management, Henan College of Animal Husbandry and Economy;College of Food Science and Nutritional Engineering, China Agricultural University;
关键词：
white-rot fungi;;xylanase;;application
摘  要：
Xylanase has a promising potential of applications in the feed industry as well as the food and pulp industry. These applications of xylanase from Pleurotus ostreatus SYJ-042 were investigated. The results showed that the degradation of hemicellulose in pear pericarp was gradually increased with reaction time. The degradation rate at 5 h reached 62.44%. Animal experiments showed that the experimental group fed on xylanase-containing wheat diet had a higher food intake than the control group and the difference was significant. The daily weight gain was also higher than that of the control group and a significant difference was observed( P < 0.01). However, the dietary hemicellulose degradation rate in the experimental group compared with the control group did not differ significantly. Administration of xylanase-containing diet also decreased the total bacterial count in the jejunum and colon( P < 0.01) without resulting in a significant difference for the cecum( P < 0.01). In conclusion, the xylanase was beneficial to remove the pericarp, promote the growth of rats, and maintain intestinal microecological balance.

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