title: Influence of new generation fungicides on Saccharomyces cerevisiae growth, grape must fermentation and aroma biosynthesis.
abstract: The influence of ten new generation fungicides (ametoctradin, benthiavalicarb-isopropyl, boscalid, cyazofamid, dimethomorph, fenhexamid, kresoxim-methyl, mepanipyrim, metrafenone, and pyraclostrobin) on the fermentative activity of Saccharomyces cerevisiae yeast was initially evaluated in pasteurised red must. The presence of ametoctradin, dimethomorph and mepanipyrim seemed to affect sugars-to-ethanol yield in the stationary phase. The same fermentation experiments were carried out for these three fungicides in ecological red must from Vitis vinifera cv. Tempranillo. When ecological must was unfiltered, the fermentative activity of yeasts was unaffected by the presence of these selected fungicides. However, when ecological must was filtered beforehand, a slight decrease of biomass and ethanol production (in terms of biomass-to-ethanol yield and sugars-to-ethanol yield, respectively), as well as a decrease in fruity aroma, were registered with respect to the control wine.
authors.affiliation: Nutrition and Bromatology Group, Faculty of Food Science and Technology, University of Vigo, Ourense Campus, E32004 Ourense, Spain.
authors.forename: R
authors.initials: R
authors.lastname: Noguerol-Pato
authors.forename: A
authors.initials: A
authors.lastname: Torrado-Agrasar
authors.forename: C
authors.initials: C
authors.lastname: González-Barreiro
authors.forename: B
authors.initials: B
authors.lastname: Cancho-Grande
authors.forename: J
authors.initials: J
authors.lastname: Simal-Gándara
mesh_terms: D000431:Ethanol / Q000032:analysis / Q000378:metabolism; D005285:Fermentation / Q000187:drug effects; D005659:Fungicides, Industrial / Q000494:pharmacology*; D012441:Saccharomyces cerevisiae / Q000187:drug effects* / Q000254:growth & development* / Q000378:metabolism; D027843:Vitis / Q000378:metabolism / Q000382:microbiology*; D055549:Volatile Organic Compounds / Q000032:analysis* / Q000378:metabolism; D014920:Wine / Q000032:analysis* / Q000382:microbiology
chemical_list: D005659:Fungicides, Industrial; D055549:Volatile Organic Compounds; D000431:Ethanol
keywords: Alcoholic fermentation; New fungicides; Wine volatiles; Yeast growth