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Int J Food Microbiol

Title:		Impact of changes in wine composition produced by non-Saccharomyces on malolactic fermentation
Author(s):		Balmaseda A; Rozes N; Leal MA; Bordons A; Reguant C;
Address:		"Universitat Rovira i Virgili, Departament de Bioquimica i Biotecnologia, Facultat d'Enologia, Grup de Biotecnologia Enologica, C/ Marcel.li Domingo s/n, 43007 Tarragona, Catalonia, Spain. Universitat Rovira i Virgili, Departament de Bioquimica i Biotecnologia, Facultat d'Enologia, Grup de Biotecnologia Microbiana dels Aliments, C/ Marcel.li Domingo s/n, 43007 Tarragona, Catalonia, Spain. Universitat Rovira i Virgili, Departament de Bioquimica i Biotecnologia, Facultat d'Enologia, Grup de Biotecnologia Enologica, C/ Marcel.li Domingo s/n, 43007 Tarragona, Catalonia, Spain. Electronic address: cristina.reguant@urv.cat"
Journal Title:		Int J Food Microbiol
Year:		2021
Volume:		20201105
Issue:
Page Number:		108954 -
DOI:		10.1016/j.ijfoodmicro.2020.108954
ISSN/ISBN:		1879-3460 (Electronic) 0168-1605 (Linking)
Abstract:		"Non-Saccharomyces yeasts have increasingly been used in vinification recently. This is particularly true of Torulaspora delbrueckii and Metschnikowia pulcherrima, which are inoculated before S. cerevisiae, to complete a sequential alcoholic fermentation. This paper aims to study the effects of these two non-Saccharomyces yeasts on malolactic fermentation (MLF) carried out by two strains of Oenococcus oeni, under cellar conditions. Oenological parameters, and volatile and phenolic compounds were analysed in wines. The wines were tasted, and the microorganisms identified. In general, non-Saccharomyces created more MLF friendly conditions, largely because of lower concentrations of SO(2) and medium chain fatty acids. The most favourable results were observed in wines inoculated with T. delbrueckii, that seemed to promote the development of O. oeni and improve MLF performance"
Keywords:		Fermentation Lactic Acid/metabolism Malates/metabolism Metschnikowia/*metabolism Oenococcus/growth & development/*metabolism Phenols/analysis/metabolism Torulaspora/*metabolism Volatile Organic Compounds/analysis/metabolism Wine/*analysis/*microbiology Ma;
Notes:		"MedlineBalmaseda, Aitor Rozes, Nicolas Leal, Miguel Angel Bordons, Albert Reguant, Cristina eng Netherlands 2020/11/18 Int J Food Microbiol. 2021 Jan 16; 337:108954. doi: 10.1016/j.ijfoodmicro.2020.108954. Epub 2020 Nov 5"