Abstract
The effect of different yeast strains on the quality of kiwi wine was investigated by polyphase determine approaches in the present research. The influence of co-culture and inoculation sequence on the quality was also explored simultaneously. Results suggested that the characteristics of the kiwi wine were affected by the metabolic characteristic of strains. The flavor content and their flavor profile of samples fermented by co-culturing of strain among species, genus, and families. When Saccharomyces bayanus (Y5 or Y6) co-cultured with Torulaspora delbrueckii Y7, the ratio of phenethyl alcohol increased, but that of octanoic acid and ethyl octanoate decreased significantly. The odor activity value (OAV) of ethyl octanoate and ethyl hexanoate was increased by co-culturing Saccharomyces with T. delbrueckii, and that of decanal and terpinen-4-ol was enhanced by co-culturing of different strains of Saccharomyces. It was an excepting process to obtain high quality of kiwi wine by co-culturing technology of yeasts, and was very effective to optimize the process by polyphase analysis approaches.
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