网购赤霞珠干红葡萄酒品质特征与价格的关联分析

Correlation analysis between quality characteristics and price of online Cabernet Sauvignon dry red wine

选用某网站3个价格区段的赤霞珠干红葡萄酒为材料,采用搅拌棒吸附萃取-气相色谱质谱联用法(SBSE-GC-MS)和超高效液相色谱法(UPLC)分别对葡萄酒中的香气成分和单体酚进行检测分析。结果表明,3个价格区段的葡萄酒共检出45种香气成分,其中酯类24种、高级醇6种、脂肪酸8种、醛酮类3种及其他香气物质4种。价格较高的葡萄酒中17种香气成分的含量相对较高,价格与检测到的单体酚物质中香豆素、山奈酚、没食子酸、咖啡酸、丁香酸、水杨酸以及白藜芦醇含量呈正相关(P<0.05),相关系数R2均>0.85。总酚和总花色苷含量在不同价格区段酒样中差异显著(P<0.05),其含量最高分别为1 680.74mg/L、606.78mg/L;单宁含量差异不显著(P>0.05)。

Cabernet Sauvignon dry red wines were purchased online i^om a website with three different price levels.The aroma components and monomeric phenols in wines were analyzed by stir bar sorptive extraction-gas chromatography-mass spectrometry(SBSE-GC-MS)and UPLC,respectively.The results showed that 45 kinds of aroma compounds in three price levels of wines were identified,including 24 esters,6 higher alcohols,8 fatty acids,3 aldehydes and 4 kinds of other aroma components.The concentration of 17 aroma compounds in the wine with high price was relatively high.Besides,there was a positive correlation(P<0.05,R2>0.85)between the price levels and 7 mono-phenols contents,including gallic,caffeic acid,syringic acid,salicylic acid,coumarin,kaempferol and resveratrol.The difference of total phenol and total anthocyanin contents in different price wine were significant(P<0.05),with the highest contents of 1 680.74 mg/L and 606.78 mg/L,respectively.The difference of tannin content was not significant(P>0.05).