当前位置: 首页 > 文章 > 食品安全国家标准GB 1886.174—2016中普鲁兰酶(比色法)检测方法的解读 饲料工业 2017 (22) 51-54
Position: Home > Articles > Interpretation of the analysis method for pullulanase activity(colorimetric method) in National Standard for Food Safety GB 1886.174—2016 Feed Industry 2017 (22) 51-54

食品安全国家标准GB 1886.174—2016中普鲁兰酶(比色法)检测方法的解读

作  者:
程瑛;徐丽;陈雪姣;邓晓旭;张雅洁;洪泽坤;周樱;熊海容
单  位:
武汉新华扬生物股份有限公司
关键词:
普鲁兰酶;阿卡波糖;淀粉酶;底物;DNS
摘  要:
文章解析普鲁兰酶国家标准中各参数对普鲁兰酶活性的影响,以便于更好地理解利用国标,更好地分析实验误差。选用普鲁兰酶、糖化酶及中温淀粉酶作为测试样品,设计四组试验,每组试验重复3次,分别从阿卡波糖、淀粉酶、底物、终止剂等参数来探讨对普鲁兰酶活性的影响。结果表明,阿卡波糖、淀粉酶、不同厂家底物和不同配置方法的DNS均对普鲁兰酶活性有影响。阿卡波糖是否添加对酶活性影响很大,该酶经过含阿卡波糖的缓冲液稀释后,需在最短时间内测试酶活性,时间放置越长,酶活性下降越快,关于阿卡波糖的作用机制还有待研究。糖化酶比中温淀粉酶对普鲁兰酶活性影响大。本文选用TCI公司的底物P0978检测的酶活性较高,但在允许的试验误差范围内。GB/T 23874—2009中DNS试剂检测的酶活性比国家标准中的DNS试剂酶活性高。
译  名:
Interpretation of the analysis method for pullulanase activity(colorimetric method) in National Standard for Food Safety GB 1886.174—2016
作  者:
Cheng Ying;Xu Li;Chen Xuejiao;Deng Xiaoxu;Zhang Yajie;Hong Zekun;Zhou Ying;Xiong Hairong;
关键词:
pullulanase;;acarbose;;amylase;;substrate;;DNS
摘  要:
The objective of this study is to elucidatethe effects of various parameters in the pullulanasenational standard on the pullulanase activity analysis thus to achieve a better understanding andto analyze experimental errors.Four parameters,including acarbose,amylase,substrate and terminator were evaluated on three different samples of pullulanase,glucoamylase and medium temperature amylase.All the four factors are demonstrated to have an effluence on the pullulanase activity analysis.Adding acarboseis or not has a serious effect on the analysis result.Glucoamylase has a bigger influence on the analysis result than the medium temperature amylase.The analysis result based on the substrate P0978 from TCI is higher.The analysis result by using the DNS reagent prepared according to GB/T23874—2009 is higher than that of GB 1886.174—2016.

相似文章

计量
文章访问数: 8
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊