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

Vietnam's sea is assessed to be very diverse and rich in seaweed species. It about 1000 different species of seaweed, which more than 800 have been identified, classify into genus, families, classes, phylums, continuously updated from the 1950s present. Previous studies by Vietnamese international scientists shown that lipids contain many valuable active ingredients such as acids C20: 4n-6 (AA), C20:5n-3 (EPA), C22:6n-3 (DHA), prostaglandin E2… In this study, fatty were converted methyl esters identified gas chromatography using flame ionization detector (GC-FID) with column Cap Mao Equity 5 (Merck, L×ID 30m×0.25 mm, df 0.25 µm). From total lipid 50 we 30 acids, which, C16:0, C18:1n-9, C20:4n-6 (AA) high content, C22:5n-3 (DPA) bioactivities. By method PCA main component analysis, dataset 8 correlation used represent distribution on two-way plane. Three phylums classified acid groups reliability. detail, phylum Phaeophyta depends content 3 including C16:1n-7, C18:1n-9 và C20:4n-6, Rhodophyta C15:0, C18:0 Chlorophyta C18:1n-7, C18:3n-6 acids. This can may help provides chemical data taxonomy