Naslov
Impact of native Pichia kluyveri and Metschnikowia pulcherrima on Maraština wines

Autori
Boban, Ana ; Jurun, Zvonimir ; Mucalo, Ana ; Budić-Leto, Irena

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Skup
1st European GREEN Conference

Mjesto i datum
Online ; Vodice, Hrvatska, 23.05.2023. - 26.05.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
native yeast, Pichia kluyveri, Metschnikowia pulcherrima, Maraština, FTIR analysis

Sažetak
Wines made from the same grape variety but from different grape microbiota are appreciated for their diversity. Grape microbiota varies among the same variety, and depends on the vineyard condition status, soil type, temperature, and rainfall, thus influencing the diversity of wines produced from the same grape but from different vineyards or winegrowing regions. Even if Saccharomyces cerevisiae is the main species able to complete fermentation, nowadays there is growing interest in native non- Saccharomyces yeasts due to their possible contribution to wine organoleptic properties. The aim of this study was to investigate the fermentative potential of native non-Saccharomyces yeast strains in sequential fermentation with commercial S. cerevisiae yeast with the purpose of selecting the potential starter culture. Indigenous Pichia kluyveri and Metschnikowia pulcherrima yeasts were selected from a collection of native yeasts established at the Institute for Adriatic Crops and Karst Reclamation in 2021, previously isolated from Maraština grapes. Control fermentation was set up with commercial M. pulcherrima FLAVIA strain. Both native yeasts in sequential fermentation with S.cerevisiae finished alcoholic fermentation. Physico-chemical parameters like ethanol (% vol.), volatile acids (g/L), pH, and extract content (g/L) in experimental wines revealed good fermentation performance of native yeast strains in comparison with commercial M. pulcherrima/S.cerevisiae.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

POVEZANOST RADA