沙城产区陶罐发酵雷司令干白葡萄酒品质及香气成分分析

Analysis of quality and aroma components of Riesling dry white wine fermented by pottery tank in Shacheng producing region

以沙城产区雷司令葡萄为原料制备干白葡萄酒,对照陶罐发酵和不锈钢罐发酵干白葡萄酒理化指标、香气成分和感官分析。结果表明,陶罐发酵雷司令干白葡萄酒总糖、总酸、挥发酸及干浸出物含量分别为3.05 g/L、7.05 g/L、0.10 g/L、20.8 g/L,其酒精度和pH值(10.35%vol、3.30)低于不锈钢罐发酵雷司令干白葡萄酒(11.65%vol、3.34)(P<0.05);陶罐和不锈钢罐发酵干白葡萄酒均检测出81种香气物质,陶罐发酵雷司令干白葡萄酒气味活力值(OAV)>1的物质有11种,以萜烯类为主,特征香气为花香;不锈钢罐发酵雷司令干白葡萄酒OAV>1的物质有15种,特征香气为果香。陶罐发酵雷司令干白葡萄酒的感官评分(95.3分)高于不锈钢罐发酵雷司令干白葡萄(92.2分)。结果显示,陶罐发酵雷司令干白葡萄酒的品质较好。

Dry white wine was prepared using Riesling grape in Shacheng producing region as material,and the physicochemical index,aroma components and sensory analysis of dry white wine fermented by pottery tank and stainless-steel tank were compared.The results showed that the total sugar,total acid,volatile acid and dry extract of Riesling dry white wine fermented by pottery tank were 3.05 g/L,7.05 g/L,0.10 g/L and 20.8 g/L,respectively,in which the alcohol content and pH(10.35%vol and 3.30)were lower than Riesling dry white wine fermented by stainless steel tank(11.65%vol and 3.34)(P<0.05).81 kinds of aroma components were all detected in the wine by pottery and stainless-steel tank.There were 11 kinds of components with odor activity value(OAV)>1 in the wine by pottery tank,mainly terpenes,and the characteristic aroma was floral.There were 15 kinds of components with OAV>1 in the wine by stainless-steel tank,and the characteristic aroma was fruity.The sensory score of the wine by pottery tank was 95.3,which was higher than the wine by stainless-steel tank(92.2).The results showed that the quality of dry Riesling wine fermented by pottery tank was better.