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Title

UTILIZATION OF DATE SEED POWDER AS SUPPLEMENTARY NUTRIENT IN THE ALCOHOLIC FERMENTATION OF CIDER VINEGAR PRODUCTION

Pages

 Start Page 28 | End Page 34

Abstract

 Introduction: Several factors that might affect the alcoholic FERMENTATION of VINEGAR production are considered. Addition of suitable supplementary nutrient might accelerate the growth of yeast, increasing the yield and shorten the duration of FERMENTATION stage.Materials and Methods: In this study, the effect of pH (4, 4.5 and 5) on the rate of sugar conversion to alcohol in APPLE juice by Saccharomyces cerevisiae was investigated. The effect of addition of DATE SEED powder was investigated at three different levels (0, 1 and 2%).Results: The results showed that the difference in the rate of sugar conversion to alcohol above mentioned treatments were significant (p<0.05). The rate of sugar conversion to alcohol at pH 4.5 was higher than pH 4 and 5. After the addition of DATE SEED powder, indicated that the difference in growth of yeast and consequently production of ethanol at above mentioned treatments were significant (p<0.05). The rate of sugar conversion to alcohol at the first 48 hour of FERMENTATION was 16.6, 22 and 44% for treatment with 0, 1 and 2% DATE SEED powder respectively.Conclusion: DATE SEED powder as a suitable supplementary nutrient can accelerate the growth of yeast and production of ethanol.

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