Separation of Antihypertensive Peptides Derived from Yak Milk Casein with Ultra-filtration Technology

Abstract

Abstract: Antihypertensive peptide derived from yak milk casein was separated by ultra-filtration technology. The effects of pressure, temperature and concentrations of peptides on ultra-filtration permeate flux were investigated. The results showed that the optimum conditions are: 5% peptides, pressure 0.15MPa and temperature 45℃. The relative molecular mass of permeates was investigated by high performance size exclusion chromatography. The results showed that the peptides mixtures can be effectively separated by ultra-filtration. The permeate fractions show higher ACE inhibitory activity than original peptide mixtures.

Key words: , ultra-filtration； antihypertensive peptides； casein；

JIANG Jing-Li, REN Fa-Zheng, CAI Hua-Wei. Separation of Antihypertensive Peptides Derived from Yak Milk Casein with Ultra-filtration Technology[J]. FOOD SCIENCE, 2006, 27(7): 124-128.

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Separation of Antihypertensive Peptides Derived from Yak Milk Casein with Ultra-filtration Technology

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