COMPARATIVE-STUDY OF THE CHEMICAL-COMPOSITION OF ZOSTERA-MARINA L ANDZOSTERA-NANA ROTH FROM THE BLACK-SEA

Diosmetin, diosmetin-7-0-glucoside, luteolin-7-0-glucoside, four pheno lic acids, eight sterols and three groups of glycolipids have been ide ntified in Zostera marina and Zostera nana. Differences were detected between Z. marina in subgenus Zostera and Z. nana in subgenus Zosterel la, primarily in the flavonoid and volatile constituents. Zostera mari na showed only traces of diosmetin-7-0-glucoside; but Zostera nana had three flavonoids: diosmetin, diosmetin-7-0-glucoside and luteolin-7-0 -glucoside. Zostera marina contained the normal parafins but Z. nana c ontained the alkylated benzenes, Pb(Et)(4) and PbMe(Et)(3).