期刊论文

Irradiation Pretreament Assisting Cellulase Degradation of Green Tea Residue for Preparation of Water Soluble Sugar

中文

茶叶通讯

1009-525X

2019

46

3

335-339

10.3969/j.issn.1009-525X.2019.03.016

国家重点研发计划(2017YFD0400803) 湖南省科技重大专项(2017NK1020) 长沙市科技重大专项(kq1703003).

本校为第一机构

以绿茶水提茶渣为原料,水溶性还原糖的含量为考察指标,采用DNS分析方法,在优选60Co辐照降解和纤维素酶酶促水解茶渣制备水溶性糖工艺技术的基础上,探讨了辐照预处理辅助纤维素酶水解绿茶茶渣制备水溶性糖的可行性.结果表明,随着辐照剂量的增大,产糖量显著提高,辐照剂量为1200 kGy时,还原糖含量的增大率为926.01％.不同辐照剂量预处理后的水提茶渣,经酶解处理,其还原糖含量较对照分别提高了1.2倍、1.2倍、1.5倍、1.5倍和1.3倍.由此说明辐照预处理辅助纤维素酶水解绿茶水提茶渣的工艺有利于水溶性糖的制备.

Taking waterextracted green tea residue as the raw material,the water-soluble sugar yield as the index,using DNS method analysis,on the basis of technology preparing for water-soluble sugar from tea residue degraded by optimun 60Co irradiation and emzymatically hydrolyzed by cellulase,the feasibility of preparing water-soluble sugar from green tea residue by irradiation pretreatment assisted cellulase hydrolysis was discussed.The results showed that the yield of watersoluble sugar was significantly improved with the increase of irradiation dose.When the irradiation dose was 1200kGy, the rate o...