Naslov
Influence of media composition and temperature on volatile aroma production by various wine yeast strains

Autori
Petravić Tominac, Vlatka ; Kovačević Ganić, Karin ; Komes, Draženka ; Gracin, Leo ; Banović, Mara ; Marić, Vladimir

Izvornik
Czech Journal of Food Sciences (1212-1800) 26 (2008), 5; 376-382

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Fermentation; Saccharomyces bayanus; Saccharomyces cerevisiae; Volatile aroma compounds; Wine yeast

Sažetak
Volatile aroma compounds production by two autochthonous Saccharomyces cerevisiae strains, isolated from Istria region, and three other yeast strains (Saccharomyces bayanus and two commercial Saccharomyces cerevisiae wine yeasts) was investigated on a small scale using synthetic VP4 medium and Graševina must at 12 and 20°C. The results obtained by gas chromatography analyses were compared with the aroma production properties of the native microflora, remaining after Graševina must sulphiting. In both media and at both temperatures, the wine yeasts investigated showed different metabolic profiles regarding the tested volatile aroma compounds, which should be taken in consideration for autochthonous wine production. Although the synthetic medium proved to be appropriate for the investigation of the fermentative properties, the determination of secondary aroma production by wine yeasts has to be conducted by must fermentation or possibly by fermentation of another synthetic medium whose composition would be more similar to must.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija, Prehrambena tehnologija

POVEZANOST RADA