摘要
以桦褐孔菌粉为原料,采用挤压喷爆法进行预处理,研究桦褐孔菌多糖溶出率。利用单因素、正交试验优化挤压条件,分析物料含水量、螺杆转速、挤压温度对桦褐孔菌多糖溶出率的影响,用扫描电镜观察挤压前、后细胞结构变化,结果表明:挤压温度对多糖溶出率的影响最大,最佳的挤压条件为五区挤压温度160℃,物料含水量9%,螺杆转速100 r/min。在此条件下多糖溶出率为43.98%,比未经挤压的桦褐孔菌多糖溶出率提高6倍。挤压后细胞结构破坏明显。挤压喷爆前处理是提高桦褐孔菌多糖溶出率的有效方法。
This study focused on the dissolution rate of inonotus obliquus polysaccharide, and extrusion blasting methods was used in the pretreatment. The conditions of extrusion were optimizd with single factor and orthogonal test,and the effects of material moisture content, screw rotary speed of twin-screw extrusion and temperature on the dissolution rate of polysaccharide were explored, then the changes of cell structure were observed by scanning electron microscopic. The result shows that temperature was the greatest influence factor on the dissolution rate of Inonotus obliquus polysaccharide. The best extrusion conditions were as followed： the material moisture content was 9%, screw rotary speed was 100 r/min, temperature was 160 ℃, and the dissolution rate of inonotus obliquus polysaccharide is 43.98%. The dissolution rate of polysaccharide was 6 times higher than that without extrusion. In summary, the extrusion pretreatment was an effective method for improving the dissolution rate of inonotus polysaccharides.
出处
《中国食品学报》
EI
CAS
CSCD
北大核心
2016年第5期109-114,共6页
Journal of Chinese Institute Of Food Science and Technology
关键词
桦褐孔菌
桦褐孔菌多糖
双螺杆挤压
多糖溶出率
inonotus
inonotus polysaccharide
twin-screw extrusion
the dissolution rate of polysaccharide
