鱼腥草种质资源氨基酸组成及含量分析

分别对鱼腥草16个不同居群幼嫩地上和地下部分的氨基酸成分进行高效液相色谱分析。结果发现,鱼腥草不同居群的氨基酸含量不尽相同,同一居群幼嫩地上茎叶和地下茎的氨基酸含量也有差异,多以地上茎叶高于地下茎。在分析的17种氨基酸中,所有居群均含有16种氨基酸,都不含Cys-SS-Cys。地上部分氨基酸中Glu含量最高,His含量最低;地下部分氨基酸中Glu含量最高,Tyr含量最低。地上部分氨基酸总量以W01-16为最高,而地下部分氨基酸总量以W01-99为最高,分别为27.89mg/g和15.46mg/g。蕺菜与峨眉蕺菜间氨基酸成分间无显著差别。鱼腥草种质资源氨基酸含量与染色体数目间相关不显著。

HPLC analysis on the amino acid constituents and content of the germplasm resources of Houttuynia

The amino acid constituents and content of the young aerial parts and underground parts of 16 Houttuynia accessions were analyzed by High Press Liquor Chromatography(HPLC). The results showed that the amino acid contents of 16 Houttuynia accessions were different,so did the young aerial parts and underground parts of the same accessions. In most accessions, the total amino acid content of aerial stems and leaves was higher than that of underground stem. Among the 17 analyzed amino acids,16 were found in the aerial stems and leaves and underground stems of all accessions. The amino acid Cys-SS-Cys was not found in all accessions. The content of Glu was the highest among all amino acid in aerial parts, while that of His was the lowest. In underground parts,the content of Glu was the highest among all amino acid,while that of Tyr was the lowest. The total amino acid content of the accession W01-16 was the highest in aerial parts, while that of accession W01-99 was the highest in underground parts, with the value of 27.89 mg/g and 15.46 mg/g respectively. There was no significant difference between the amino acid constituents of H.emeiensis Z.Y.Zhu et S.L. and H.cordata Thunb. The results also showed that the correlation between the amino acid content and the chromosome number was not significant.