中国主产干红葡萄酒中氨基酸含量对照与探讨

测定了市售国内葡萄主产地的 8个主要品牌干红葡萄酒中的游离氨基酸含量 ,发现不同葡萄品种之间游离氨基酸含量差别很大 ,新疆天山北坡地区所产干红葡萄酒中含量最高 ,达到 15 0 8mg/L ,与美国加州优质干红葡萄酒相当 ,其余品牌大多数在 70 0～ 1 1 0 0mg/L范围内变化 ,有 2个样品含量低于 30 0mg/L。L 脯氨酸是所有葡萄酒中氨基酸的主体 ,也是各样品含量差异最大的氨基酸 ,这与葡萄品种、气候、发酵工艺及酒的陈酿时间有关。

Comparison of Free Amino Acids Content of Domestic Dry Red Wine

The content of free amino acids in 8 kinds of domestic dry red wine(brought in Guangzhou market)were measured by HPLC. Results showed that there were obvious differences of the contents of free amino acids among these samples,the wine with highest content of total amino acids was produced in Malas county in Xinjiang province,reached 1508 mg/L,similar to that of American high quality dry red wine,the others were varied from 700 mg/L to 1100 mg/L,two samples under 300 mg/L. L-proline content was the highest among amino acids in wine, it also. These differences may be ascribed to various grape varieties,growth climate, and fermentation technology and aging time.