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

Diosmetin, diosmetin-7-0-glucoside, luteolin-7-0-glucoside, four phenolic acids, eight sterols and three groups of glycolipids have been identified in Zostera marina and Zostera nana. Differences were detected between Z. marina in subgenus Zostera and Z. nana in subgenus Zosterella, primarily in the flavonoid and volatile constituents. Zostera marina 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 contained the alkylated benzenes, Pb(Et)(4) and PbMe(Et)(3).