%0 Journal Article %A Shameel, M. %A Afaq-Husain, S. %A Zarina, A. %D 2013 %I Begell House %K marine algae, Rhodophycota, red algae, phycochemistry, fatty acids, sterols, Sesquiterpenes %N 3 %P 285-290 %R 10.1615/InterJAlgae.v15.i3.80 %T Phycochemical Studies on Seven Species of Rhodophycota from Karachi Coast of Pakistan %U https://www.dl.begellhouse.com/journals/7dd4467e7de5b7ef,0e7a1914024b39db,5f0b8c5f0edf68c1.html %V 15 %X 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. %8 2013-08-14