Journal
JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY
Volume 36, Issue 2, Pages 229-237Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10295-008-0489-4
Keywords
K. apiculata; Mixed culture; Temperature; Sulfur dioxide; Winemaking
Categories
Funding
- Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET)
- Banco Rio and Consejo de Investigaciones de la Universidad Nacional de Tucuman (CIUNT), Argentina
Ask authors/readers for more resources
The influence of two physicochemical factors involved in winemaking, temperature and SO2, on the kinetics and metabolic behavior of Kloeckera apiculata and Saccharomyces cerevisiae was examined. Highest biomass was reached at 15 and 25A degrees C for K. apiculata and S. cerevisiae, respectively. Pure cultures of K. apiculata died off early with increasing temperature, but in co-culture with S. cerevisiae it showed higher viability and a change in the death curve from exponential to linear. Statistical analysis revealed that metabolite production was significantly different for the three cultures and also at the different fermentation temperatures. Besides, the interaction between culture type and temperature was significant. At temperatures from 15 to 30A degrees C the mixed culture showed similar ethanol and lower acetic acid production compared with a pure culture of K. apiculata. SO2 addition slightly increased survival of the non-Saccharomyces species in pure and mixed cultures. Statistical evaluation indicated that culture type and SO2 addition significantly affected metabolite production, but the interaction between culture and SO2 was not significant. These results contribute to current knowledge of enological factors and their effect on prevalence and fermentative activities of the composite yeast flora and the statistical significance emphasizes the importance of the combined influence of the culture type and physicochemical factors on the production of fermentation metabolites.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available