植酸及几种酚酸对牛奶蛋白体外消化率的影响

doi:10.7506/spkx1002-6630-201015019

食品科学 ›› 2010, Vol. 31 ›› Issue (15): 87-90.doi: 10.7506/spkx1002-6630-201015019

植酸及几种酚酸对牛奶蛋白体外消化率的影响

林海伟¹，赵阳阳¹，欧仕益^{1 ,*} ，杜淑霞^{1 , 2}，黄才欢¹

1.暨南大学食品科学与工程系
2. 广东轻工职业技术学院食品与生物工程系

收稿日期:2009-12-30 修回日期:2010-05-25 出版日期:2010-08-15 发布日期:2010-12-29
通讯作者: 欧仕益 E-mail:tosy@jnu.edu.cn

Effects of Phytic Acid and Phenolic Compounds on the in vitro Digestibility of Milk Proteins

LIN Hai-wei1，ZHAO Yang-yang1，OU Shi-yi1,*，DU Shu-xia1,2，HUANG Cai-huan1

(1. Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China ；
2. Department of Food Bioengineering, Guangdong Industry Technical College, Guangzhou 510300, China)

Received:2009-12-30 Revised:2010-05-25 Online:2010-08-15 Published:2010-12-29
Contact: OU Shi-yi1,*， E-mail:tosy@jnu.edu.cn

摘要/Abstract

摘要：

研究植酸和几种酚类物质(阿魏酸、单宁、水杨酸、对- 羟基苯甲酸)在常温和灭菌条件下(121℃，20min)对牛奶蛋白体外消化率的影响。结果表明：植酸和4 种酚类物质均降低蛋白质消化率，降幅为5%～27%；反应后延长静置时间可进一步降低蛋白质消化率；增加胃蛋白酶浓度可使蛋白体外消化率提高1%～9%。

关键词: 植酸, 酚酸, 牛奶蛋白, 体外消化率

Abstract:

Pure milk samples with separately added phytic acid and phenolic compounds such as ferulic acid, tannin, salicylic acid and p-hydroxybenzoic acid at different levels were subjected to standing at normal temperature for 1 h or sterilization at 121 ℃ for 20 min followed by cooling to the normal temperature prior to pepsin hydrolysis in order to investigate the effects of phytic acid these phenolic compounds on the in vitro digestibility of milk proteins. The results indicated that all these compounds added alone resulted in a decrease in digestibility of milk proteins by 5%－27%. Prolonged length of standing time after cooling to the normal temperature (in the case of milk samples subjected to sterilization) resulted in a higher protein digestibility. Moreover, with increasing pepsin concentration, protein digestibility in vitro increase by 1%－9%.

Key words: phytic acid, phenolic acid, milk proteins, protein digestibility in vitro

中图分类号:

林海伟1，赵阳阳1，欧仕益1,*,杜淑霞1,2，黄才欢1. 植酸及几种酚酸对牛奶蛋白体外消化率的影响[J]. 食品科学, 2010, 31(15): 87-90.

LIN Hai-wei1，ZHAO Yang-yang1，OU Shi-yi1,*，DU Shu-xia1,2，HUANG Cai-huan1. Effects of Phytic Acid and Phenolic Compounds on the in vitro Digestibility of Milk Proteins[J]. FOOD SCIENCE, 2010, 31(15): 87-90.

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植酸及几种酚酸对牛奶蛋白体外消化率的影响

Effects of Phytic Acid and Phenolic Compounds on the in vitro Digestibility of Milk Proteins

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