Saccharomyces Uvarum Strain Conductive To Low Production Of Higher Alcohols And Strong Degradation Of Malic Acid And Application Thereof
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Jul 6, 2023
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Oct 1, 2020
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Dec 5, 2019
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The present invention provides a Saccharomyces uvarum strain capable of low production of higher alcohols and strong degradation of malic acid. After the wine using Saccharomyces uvarum recombinant strain of the present invention is fermented for 5 days, with other fermentation properties unaffected, the content of isobutanol, isoamyl alcohol and phenethyl alcohol in the wine is 28.18 mg/L, 171.76 mg/L and 13.60 mg/L respectively, which is reduced by 20.28%, 14.77% and 11.26% compared with the starting strain, the total content of main higher alcohols (n-propanol, isobutanol, isoamyl alcohol and phenethyl alcohol) is reduced by 12.97%, and the content of malic acid is reduced to 1.13 g/L after fermentation, which greatly shortens the fermentation period, overcomes the influence of lactic acid bacteria fermentation in the ordinary fermentation process and unpleasant flavor caused by higher content of higher alcohols.
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