title: Bioactive peptides released from Saccharomyces cerevisiae under accelerated autolysis in a wine model system.
abstract: 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.
authors.affiliation: Inst. de Fermentaciones Industriales (CSIC), C/Juan de la Cierva 3, 28006, Madrid, Spain.
authors.forename: J M
authors.initials: JM
authors.lastname: Alcaide-Hidalgo
authors.forename: E
authors.initials: E
authors.lastname: Pueyo
authors.forename: M C
authors.initials: MC
authors.lastname: Polo
authors.forename: A J
authors.initials: AJ
authors.lastname: Martínez-Rodríguez
mesh_terms: D000806:Angiotensin-Converting Enzyme Inhibitors / Q000378:metabolism*; D001329:Autolysis; D005511:Food Handling / Q000379:methods; D005656:Fungal Proteins / Q000378:metabolism*; D008954:Models, Biological; D017382:Reactive Oxygen Species / Q000378:metabolism*; D012441:Saccharomyces cerevisiae / Q000378:metabolism / Q000502:physiology*; D013997:Time Factors; D014920:Wine / Q000382:microbiology* / Q000592:standards
chemical_list: D000806:Angiotensin-Converting Enzyme Inhibitors; D005656:Fungal Proteins; D017382:Reactive Oxygen Species