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International Journal on Algae
SJR: 0.219 SNIP: 0.261 CiteScore™: 0.24

ISSN Druckformat: 1521-9429
ISSN Online: 1940-4328

International Journal on Algae

DOI: 10.1615/InterJAlgae.v15.i3.80
pages 285-290

Phycochemical Studies on Seven Species of Rhodophycota from Karachi Coast of Pakistan

M. Shameel
Department of Botany, University of Karachi, Karachi-75270, Pakistan
S. Afaq-Husain
Department of Botany, University of Karachi, Karachi-75270, Pakistan
A. Zarina
Department of Botany, Federal Urdu University of Arts, Sciences & Technology, Gulshan-e-Iqbal Campus, Karachi 75300, Pakistan


Seven species of red algae, Dermonema abbottiae, Geladium usmanghanii, Helminthocladia nizamuddinii, Hypnea pannosa, Scinaia hatei, S. moniliformis subsp. Pakistanensis, and S. saifullahii were collected and extracted with hexane-CHCl3 and MeOH. The seaweed extracts revealed the presence of 13 saturated and 6 unsaturated fatty acids by GLC and GC-MS, 22 different sterols and 3 sesquiterpenes by (El, FAB, FD and HR)-MS and (1H and 13C)-NMR spectroscopy. Palmitic acid (C16:0) was found in maximum amounts and as the major acid, followed by margaric (C17:0) and stearic (C18:0) acids. The major sterol was cholesterol, which was followed by β-sitosterol. The sesquiterpenes were only isolated from H. pannosa.