title: Grape and apple wines volatile fermentation products and possible relation to spoilage.
abstract: The main volatile by-products of the alcoholic fermentation of grape wine, cider and apple pulp wine were investigated to determine if any correlated with spoilage resistance in the latter two. Spoilage was visually detected after seven days in low-alcohol grape wine in comparison to 11 and 16 days in cider and apple pulp wine, respectively. Acetaldehyde, ethyl acetate, methanol, propanol, isobutanol and amyl alcohols were the main fermentation by-products detected in all three wines. There were highest concentrations of acetaldehyde, ethyl acetate, methanol and propanol in grape wine and, therefore, these by-products could not be implicated in spoilage resistance in apple wines. Increased concentrations of isobutanol and amyl alcohols, however, in cider and apple pulp wine in comparison to grape wine might have been the reason for spoilage resistance in the apple wines.
authors.affiliation: Department of Chemistry, University of Patras, Section of Analytical, Environmental and Applied Chemistry, GR-26500, Patras, Greece.
authors.forename: E
authors.initials: E
authors.lastname: Polychroniadou
authors.forename: M
authors.initials: M
authors.lastname: Kanellaki
authors.forename: M
authors.initials: M
authors.lastname: Iconomopoulou
authors.forename: A A
authors.initials: AA
authors.lastname: Koutinas
authors.forename: R
authors.initials: R
authors.lastname: Marchant
authors.forename: I M
authors.initials: IM
authors.lastname: Banat
mesh_terms: D000433:1-Propanol / Q000032:analysis; D000079:Acetaldehyde / Q000032:analysis; D000085:Acetates / Q000032:analysis; D005285:Fermentation; D005638:Fruit; D000432:Methanol / Q000032:analysis; D027843:Vitis; D014835:Volatilization; D014920:Wine
chemical_list: D000085:Acetates; C007650:ethyl acetate; D000433:1-Propanol; D000079:Acetaldehyde; D000432:Methanol