Malays. Appl. Biol. (June 2002) 31(1): 9-12
FLAVONOID COMPOUNDS OF ENHALUS ACOROIDES (HYDROCHARITACEAE)
UMI-KALSOM, Y., MISRI, K., JAPAR, S.B. and ZAHRINA, M.N.
Jabatan Biologi, Fakulti Sains dan Pengajian Alam Seldtar, Universiti Putra Malaysia, 43400, Serdang, Selangor
ABSTRACT
Flavonoid constituents were isolated from a sea-tape grass, Enhalus acoroides. Three flavone glycosides, luteolin 7,4'-diarabinoside, luteolin 3'7-dirhamnoside, chrysoeriol 7-xyloside accompanied by two flavonol-related compounds were identified by chemical evidence and UV spectroscopy. Luteolin and chrysoeriol have been found before in Elodea canadensis and Stratiotes aloides, but this is the first record of the respective aglycones in E. acoroides.
ABSTRAK
Juzuk-juzuk flavonoid telah diasingkan dari rumput "sea-tape", Enhalus acoroides. Tiga flavon glikosida, luteolin?,4-diarabinosida, luteolin 3'7-diramnosida, krisoeriol 7-zilosida bersama-sam dengan dua flavonol iaitu sebatian yang berkaitan rapat telah diidentifikasikan melalui bukti kimia dan spektroskopi UV. Luteolin dan krisoeriol telah pun dijumpai sebelumnya di dalam Elodea canadensis dan Stratiotes aloides, tetapi kini ianya pertama kalinya dilapurkan di dalam E. acoroides.
Key words: Enhalus acoroides, constituents, flavone, flavonol
REFERENCES
Harborne, J.B. 1967. Comparative Biochemistry of the Flavonoids. Academic Press, London and New York. 383pp.
Harborne, J.B. 1984. Phytochemical Methods. Chapman and Hall, London and New York. 288 pp.
Harborne, J.B. and C.A. Williams. 1976. Occurrence of sulphated flavones and caffeic acid ester in members of the fluviales. Biochemical Systematic and Ecology. 4: 37-41.
Harborne, J.B. and C.A. Williams. 1980. Distribution and evolution of flavonoids in the monocotyledons. In: The Flavonoids Advances in Research Since 1980. J. B. Harborne (ed.). Chapman and Hall, New York. pp. 505-536.
Mabry, T.J., K.R. Markham and M.B. Thomas. 1970. The Systematic Identification of Flavonoids. Springer, New York. pp. 45-126.
Markham, K.R. 1982. Techniques of Flavonoid Identification. Academic Press, London and New York. 113pp.
Markham, K.R. and T.J. Mabry. 1975. Ultra-visible and proton magnetic resonance spectroscopy of flavonoids. In: The Flavonoids. J.B. Harborne, T.J. Mabry and H. Mabry (eds.). Acedemic Press, New York, pp. 45-77.
Me. Millan, C., O. Zapata and L. Escobar. 1983. Sulphated phenolic compounds in seagrasses. Aquatic Botany, 8: 267-278.
