不同品种及产地西梅香气成分差异性研究

Study of Differences among Different Prune Varieties and Producing Areas in Prune Aroma Components

为研究不同西梅香气成分差异性,以4种不同品种及产地的西梅为研究对象,采用同时蒸馏萃取法及气相色谱质谱联用技术(gas chromatography-mass spectrometry,GC-MS)对其香味成分进行测定分析,并通过主成分分析、聚类分析比较不同品种及产地西梅香气成分的差异性。结果表明:不同品种及产地西梅香气成分均包括醛类、酸类、醇类、酮类、酯类、烯烃类、酚类及含氮杂环化合物等物质,其中醛类物质所占比例最大,但特征香气成分含量存在较大差异。主成分分析及聚类分析表明:品种是造成西梅香气成分差异性较大的原因之一。

To study differences in aroma contributing components among different prune varieties,four prune variants from different growing locations were used as the research object.Simultaneous distillation and extraction followed by gas chromatography-mass spectrometry(GC-MS)were used to chemically assess their aromas.Aroma contributory components were identified and analyzed,and differences in the aroma contributing components among the different prune varieties and producing areas were compared via principal component analysis and cluster analysis.The prune aroma components from different varieties and origins include aldehydes,acids,alcohols,ketones,esters,olefins,phenols and nitrogen-containing heterocyclic compounds,among which,aldehydes were the most highly represented.Striking differences were observed in characteristic aroma component contents.Principal component and cluster analyses showed that variety impacts differences in prune aroma components relatively strongly.