猕猴桃酒酿造工艺参数优化及其香气成分分析

    Optimization of technology for kiwi wine making and analysis of aroma components

    • 摘要: 通过三因素二次通用旋转组合试验设计,考察了发酵温度、发酵液初始pH值、接种量对酿造猕猴桃酒品质的影响,得出了猕猴桃酒质量的回归模型,结果表明:发酵温度、发酵液初始pH值和接种量对猕猴桃酒质量的影响极为显著(p<0.01);主因子效应为发酵温度>发酵液初始pH值>接种量。猕猴桃酒酿造的最佳工艺参数为发酵温度20℃,接种量10.3%,pH值3.6;利用气相色谱质谱联用技术(GC-MS)对猕猴桃酒香气成分进行了分析,通过多元回归分析得到了猕猴桃酒中酯类、醇类、酸类和醛酮类香气与工艺参数间的回归模型。

       

      Abstract: Through three-factor second order rotation combination experiment, the effects of fermentation temperature, pH value and inoculum volume were investigated, and the regression model with high reliability was obtained between the quality of kiwi wine and the factors. Results show that the three factors all have very significant influence on the quality of kiwi wine(p<0.01). The influencing sequence from significant to common is fermentation temperature, pH value and inoculum volume. The optimized processing parameters are 20℃ of fermentation temperature, 3.6 of pH value and 10.3% of inoculum volume. Then the aroma components in kiwi wine were analyzed by gas chromatogram-mass spectrometry(GC-MS), and the models of esters, alcoholics, acids, aldehydes and ketones with high reliability was obtained by regression analysis of the relation between the aroma content and the processing parameters.

       

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