Study on using fatty acid data in the botanical chemotaxonomy for Vietnamese seaweed species

Abstract

By the method of PCA main componenl analysis, from the dataset of fatty acids, we have identified 8 main fatty acids with high correlation and used to represent the distribulion of scaweed species on the two-way plane. Three phylums were classified by different fatty acid groups with the high reliability. In the detail, the distribution ofthe phylum Phaeophyta depends on the content of 3 fatty acids including C16:ln-7, C 18:1n-9 và C20:4n-6, the phylum Rhodophyta depends on C 15:0, C 16:0, C 18:0 fatty acids, and the phylum Chlorophyta depends on C 18:1 n-7, C 18:3n-6 fatty acids. This method can may help provides more chemical dala in the taxonomy of Vielnamese seaweed species.