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Issue:
Characteristics of polyphenol oxidases from Jiubao peaches
Author(s):
LI Xiujin
,
ZHU Jingtao
,
ZHONG Fei
Pages:
30
-
32
Year:
2003
Issue:
2
Journal:
JOURNAL OF AGRICULTURAL UNIVERSITY OF HEBEI
Keyword:
桃
;
多酚氧化酶
;
特性
;
Abstract:
以邻苯二酚为底物, 分析了大久保桃多酚氧化酶(PPO)的最适pH、最适作用温度、酶促动力学参数Km值及其抑制剂.结果表明,大久保桃多酚氧化酶的最适pH值为6.0,最适作用温度34 ℃,Km=9.7×10-2 mmol/L;偏亚硫酸钠、抗坏血酸、谷胱甘肽、巯基乙醇对大久保桃PPO的活性有较强的抑制作用.
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