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Egypt. J. Phycol.. 2018; 19(1): 47-57


Phytochemical Screening for Antimicrobial Compounds of Some Seaweed from Coastal area of Abu-Qir, Alexandria, Egypt

Gehad M. T. Morsy.

Abstract
In this study, antibacterial activities of four seaweeds (Pterocladia capillacea, Coralline mediterranea, Corallina officinalis, and Ulva lactuca) collected from Abu-Qir, Alexandria, Egypt during late summer 2016. Their methanol/chloroform extracts were tested against four Gram-positive bacteria (Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus sp. and Bacillus cereus, and two Gram-negative bacteria (Salmonella enterica, Proteus mirabilis). The results revealed that most of the extracts inhibited Bacillus cereus. On the other hand, no effect was shown on Proteus mirabilis. The n-Hexadecanoic acid fatty acid active compound in Pterocladia capillacea extract was characterized by GC-MS analysis.

Key words: Seaweeds, Methanol/Chloroform extract, Phytochemical Screening, Antibacterial activity, GC-MS analysis


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