Study on Processing Antihypertensive Peptides Derived from Wheat Germ Protein

Abstract

Abstract: After wheat germ was degreased by supercritical carbon dioxide ,the method of dissolving wheat germ protein byalkali and of deposition by acid was applied.The wheat germ protein was hydrolyzed by single and complex protease respec-tively in 8 kinds of proteases for antihypertensive peptide.Peptides activity was determined by high performance capillaryelectrophoresis. The hydrolyte obtained by alkaline protease showed the highest activity, with the optimum functionary pH as9 and temperature as 50～55℃,The quantity of protease used was 24AU/kg。

Key words: wheat germ protein, supercritical carbon dioxide, high performance capillary electrophoresis, angiotensoin-converting enzyme, antihypertensive peptides

XIN Zhi-Hong, WU Shou-Yi, MA Hai-Le, DAI Chun-Hua. Study on Processing Antihypertensive Peptides Derived from Wheat Germ Protein[J]. FOOD SCIENCE, 2003, 24(10): 120-123.

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Study on Processing Antihypertensive Peptides Derived from Wheat Germ Protein

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