Starmerella bacillaris and Saccharomyces cerevisiae mixed fermentations to reduce ethanol content in wine

Fabrizio Torchio, Vasileios Englezos, Kalliopi Rantsiou, Francesco Cravero, Anne Ortiz-Julien, Vincenzo Gerbi, Luca Rolle, Luca Cocolin

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

62 Citazioni (Scopus)

Abstract

Decreasing the ethanol content in wine is a current challenge, mainly due to the global climate change and to the consumer preference for wines from grapes with increased maturity. In this study, a central composite design (CCD) and response surface methodology (RSM) approach was used to investigate the potential application of Starmerella bacillaris (synonym Candida zemplinina) in combination with Saccharomyces cerevisiae, in mixed (co-inoculated and sequential) cultures, to understand better the mechanism of co-habitation and achieve the objective of reducing the ethanol in wines. Laboratory scale fermentations demonstrated a decrease up to 0.7 % (v/v) of ethanol and an increase of about 4.2 g/L of glycerol when S. cerevisiae was inoculated with a delay of 48 h with respect to the inoculation of S. bacillaris. Pilot-scale fermentations, carried out in winemaking conditions, confirmed the laboratory results. This study demonstrates that the combination of strains and inoculation protocol could help to reduce the ethanol content in wines.
Lingua originaleEnglish
pagine (da-a)1-12
Numero di pagine12
RivistaApplied Microbiology and Biotechnology
Volume10
DOI
Stato di pubblicazionePubblicato - 2016

Keywords

  • Central composite design
  • Ethanol content reduction
  • Non-Saccharomyces yeast
  • Response surface methodology
  • Starmerella bacillaris

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