摘要
[目的]比较分析制备胃膜素的2种方法，优化制备方法，为工业化规模生产提供试验依据。[方法]以猪胃黏膜为材料，采用单产工艺和联产工艺提取胃膜素，比较分析2种制备方法所得胃膜素的性状、得率、总氮含量和还原性物质含量的差异。[结果]2种方法提取的胃膜素在黏度、酸度、干燥失重和炽灼残渣等方面差异不大，总氮含量和还原性物质含量也无明显差异，均符合国家标准。单产工艺胃膜素得率较高，平均达3．5％，联产工艺得率偏低，仅有1．7％，但联产工艺可以得到副产品胃蛋白酶。[结论]单产工艺的得率高于联产工艺，联产工艺可以同时得到副产品。
Abstract
Objective] To compare the two methods for gastric mucin preparation, to optimize preparation method, and to provide references in gastric mucin industrialization-scale production.[Method] With porcine gastric as the research materials, gastric mucin was extracted by single production method and joint production method.Differences in the gastric mucin characters and yield, total nitrogen content and reducing matter content were compared by the two methods.[Result]There were no significant differences in the viscosity, acidity, drying loss and residue on ig-nition between the two methods.However, there were no significant differences in total nitrogen content and reducing substance content, which all met the national standard.The yield of gastric mucin by single production method was higher than that of joint production method, which were 3.5% and 1.7%, respectively.However, the two production methods could get by-products of pepsin.[Conclusion] The yield rate of single production method is higher than that of joint production method, while joint production method achieves by-products simultaneously.
国家科技期刊平台
NSTL
维普
万方数据