Bioactive Peptides Released from Saccharomyces cerevisiae under Accelerated Autolysis in a Wine Model System

• Published in: Journal of food science Vol. 72; no. 7; pp. M276 - M279
• Main Authors: Alcaide-Hidalgo, J.M, Pueyo, E, Polo, M.C, Martí nez-Rodrí guez, A.J
• Format: Journal Article
• Language: English
• Published: Malden, USA Blackwell Publishing Inc 01.09.2007; Institute of Food Technologists; Wiley Subscription Services, Inc
• Subjects: acceleration; ACE inhibitors; ACE inhibitory activity; Angiotensin-Converting Enzyme Inhibitors - metabolism; Autolysis; bioactive properties; Biological and medical sciences; Fermented food industries; Food Handling - methods; Food industries; Food microbiology; Fundamental and applied biological sciences. Psychology; Fungal Proteins - metabolism; model food systems; Models, Biological; Oxygen; Peptides; radical scavenging activity; Reactive Oxygen Species - metabolism; Saccharomyces cerevisiae; Saccharomyces cerevisiae - metabolism; Saccharomyces cerevisiae - physiology; Time Factors; Vitaceae; wine; Wine - microbiology; Wine - standards; wine quality; wine yeasts; winemaking; Wines; Wines and vinegars; Yeast; yeast autolysis; Wine; Yeast; Peptides; Injury; Nitrites; Listeria monocytogenes; Fungi; Autolysis; Alcoholic beverage; nitrite; sublethal injury; Bacteria; Ascomycetes; Models; Saccharomyces cerevisiae; realy-to-eat (RTE) food; Thallophyta; Food
• ISSN: 0022-1147; 1750-3841
• DOI: 10.1111/j.1750-3841.2007.00450.x

The ACE inhibitory activity (IACE) and the oxygen radical absorbance capacity (ORAC-FL) values of yeast peptides isolated from a model wine during accelerated autolysis of Saccharomyces cerevisiae have been studied. Samples were taken at 6, 24, 48, 121, and 144 h of autolysis. Peptide concentration increased throughout autolysis process. Peptides were fractionated into 2 fractions: F1, constituted by hydrophilic peptides, and F2, containing hydrophobic peptides. Both IACE activity and ORAC-FL values increased during 121 h of autolysis, then decreased afterward. Peptide fraction F2 was the main fraction involved in IACE activity and ORAC-FL.