基于游离氨基酸水平对葡萄酒产地和品种的判别分析

摘要

Forty-seven Chinese wines from three geographic regions and five grape varieties have been analyzed for primary free amino acids by reversed-phase high performance liquid chromatography.The free amino acids content of Chinese wines was from 447.13 to 1 359.06 mg/L.Pro, Arg and Glu were the most predominant amino acids in free amino acids.Discriminant analysis based on the free amino acid content according to geographic origin, grape variety was carried out, the percentage of samples correctly classified were 85.1 and 100.0％ , respectively.The free amino acid profiles were useful in the classification of Chinese wines according to geographic origin and grape variety.%以47款来源于3个产地和5个品种的中国葡萄酒原酒为实验样本,通过反相高效液相色谱法技术对其中的17种主要的游离氨基酸进行了定性定量分析.中国葡萄酒原酒中游离氨基酸含量范围为447.13～1 359.06 mg/L.在游离氨基酸中,脯氨酸、精氨酸、谷氨酸均为含量最为丰富的氨基酸.基于游离氨基酸和含量水平对葡萄酒产地和品种进行判别分析,正确分类结果分别为85.1％和100.0％,实现了对中国葡萄酒产地和品种的良好识别.