Analysis of primary amino acids profiles of Italian Riesling white wines and their contribution to regional characteristics

Sixteen Italian Riesling white wines from three regional regions provided by YanTai ChangYu Pioneer Wine Company Limited have been analyzed for primary free and total amino acids by reversed-phase high performance liquid chromatography.The date were processed by principal componet analysis (PCA) and cluster analysis (CA) .The results showed that 17 amino acids were qualitied and quantitied in Italian Riesling white wines and as the most abundant amino acids, Arginine and Proline are accounts for 40% to 70% of the total amino acids content.From the results of PCA and CA, significant regional characteristics were observed in both free and total amimo acids content of Italian Riesling.