食品科学 ›› 2007, Vol. 28 ›› Issue (10): 168-170.

• 工艺技术 • 上一篇    下一篇

啤酒废酵母中蛋白质提取工艺的研究

 刘蓉, 邓泽元, 李瑞贞   

  1. 南昌大学食品科学与技术国家重点实验室; 南昌大学食品科学与技术国家重点实验室 江西南昌330047; 江西南昌330047;
  • 出版日期:2007-10-15 发布日期:2011-11-22

Study on Extraction of Protein from Waste Brewer’s Yeast

 LIU  Rong, DENG  Ze-Yuan, LI  Rui-Zhen   

  1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
  • Online:2007-10-15 Published:2011-11-22

摘要: 本研究在采用诱导剂+自溶法的基础上,结合多种提取方法,通过对比和正交试验确定啤酒废酵母中蛋白质的最佳提取工艺及参数,并用胃蛋白酶-胰蛋白酶联合消化法测定提取蛋白质的消化率。实验结果表明使用诱导剂+自溶+酶解法提取较好,最佳工艺条件为:温度50℃、pH值7.0、酶解自溶时间为40h、中性蛋白酶用量25U/g干酵母、β-葡聚糖酶用量15U/g干酵母。在此条件下,粗蛋白质得率达27%。啤酒废酵母提取的粗蛋白质体外消化率为81.06%。

关键词: 啤酒废酵母, 蛋白质, 酶解, 提取工艺, 体外消化率

Abstract: Proteins were prepared by the combination of various extraction methods based on the method of inducer plus autolysis from waste brewer yeast. The optimum technology processes and parameters were determined by comparison experiments and orthogonal tests. The protein digestibility was measured by a pepsin-trypsin method in vitro. The results indicated that the optimal method of cell-wall broken was inducer plus autolysis plus enzymatic hydrolysis, and the optimal parameters were as follows: temperature 50 ℃, pH 6.0, 40 hours, the neutral protease and the β-glucanase-substrate ratio 25 U/g and 15 U/g respectively. The protein digestibility in vitro was 81.06%.

Key words: waste brewer yeast, protein, enzymatic hydrolysis, extraction technology, in vitro digestibility