Journal of Zhejiang Agricultural Sciences ›› 2025, Vol. 66 ›› Issue (7): 1724-1732.DOI: 10.16178/j.issn.0528-9017.20240353

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Effect of malolactic fermentation temperature on the quality of Cabernet Sauvignon wines

ZHONG Dongli1(), YANG Hui2, WANG Zheng1, SUN Wenjing1, ZHU Yuanzhenghong1, ZHANG Junxiang1,3,*()   

  1. 1. College of Wine and Horticulture, Ningxia University, Yinchuan 750021, Ningxia
    2. College of Life Sciences, Ningxia University, Yinchuan 750021, Ningxia
    3. Engineering Research Center of Grape and Wine, Ministry of Education, Yinchuan 750021, Ningxia
  • Received:2024-05-02 Online:2025-07-11 Published:2025-07-28

Abstract:

This experiment used Cabernet Sauvignon wine grapes as raw materials, inoculated with yeast, and inoculated with Denococcus oeni after the initiation of alcohol fermentation for 24 hours. The fermentation temperatures were controlled at 21-23, 24-26, and 27-29 ℃, respectively. By monitoring the malolactic fermentation(MLF) process, the physicochemical indicators, aroma, and sensory quality of the wine were compared and analyzed to determine the appropriate fermentation temperature. The results showed that MLF was completed in about 10 days when the fermentation temperature was at 27-29 ℃, while the completion time was extended to 14 days when the temperature was decreased to 24-26 ℃, and increased to 20 days when the temperature was further decreased to 21-23 ℃. Significant differences in volatile acid content, total acid content, pH value, total phenols content and tannins content were found in wines fermented at different temperatures, with the total acid content decreased, and the pH value and volatile acid content increased as the fermentation temperature increased. Examination of the compounds with an odor activity value greater than 1 revealed that the contents of esters such as ethyl acetate, ethyl butyrate and ethyl caprylate were relatively higher in the wine samples at the fermentation temperature of 21-23 ℃, endowing the wine with richer floral and fruity characteristics. The higher contents of 2,3-butanedione and diethyl succinate in the samples fermented at 24-26 ℃ gave the wines a more intense creamy and fruity characteristics. The aroma character of isoamyl alcohol was more pronounced at the fermentation temperature of 27-29 ℃. In the sensory tasting, the samples fermented at 21-23 ℃ received higher scores. In conclusion, the samples that underwent MLF at 21-23 ℃ had lower volatile acid content and emitted more intense aroma.

Key words: malolactic fermentation, temperature, wine, quality

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