Effects of mixed fermentation on the flavor quality and in vitro antioxidant activity of Zaosu pear-Merlot grape composite alcoholic beverage
In this study, a mixed fermentation strategy using grape-blended pear juice co-inoculated with Metschnikowia pulcherrima 346 and Saccharomyces cerevisiae ES488 was used to characterize the modifications of the flavor and antioxidant activity of Zaosu pear-Merlot grape alcoholic beverage. The optimum...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-01-01
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| Series: | Food Chemistry: X |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590157524010162 |
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| Summary: | In this study, a mixed fermentation strategy using grape-blended pear juice co-inoculated with Metschnikowia pulcherrima 346 and Saccharomyces cerevisiae ES488 was used to characterize the modifications of the flavor and antioxidant activity of Zaosu pear-Merlot grape alcoholic beverage. The optimum fermentation parameters identified using a fuzzy mathematical sensory evaluation model were an initial pH of 4.22, a ratio of M. pulcherrima 346 and S. cerevisiae ES488 inoculated 1.13:1, sequential inoculation time 47.02 h and making temperature 19 °C. The optimal mixed fermentation increased the content of terpenes and ethyl esters in pear-grape beverage by 16.5 % and 11.2 % respectively, enhancing floral and fruity aromas and attaining the highest sensory score. Due to the accumulation of flavonoid, anthocyanin, and phenol, the optimized alcoholic beverage exhibited the highest DPPH (97.6 %) and OH (93.3 %) radical scavenging rate as well as iron ion reducing power (3.25), which is conducive to extending the shelf life of beverages. |
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| ISSN: | 2590-1575 |