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Screening for antibacterial activites of alga Ulva sp. extracts [electronic resource].

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Allam, Shimaa W

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Language: English Summary language: Arabic Description: p.587-597Other title:

دراسة لنشاط مستخلصات طحلب Ulva كمضاد للبكتيريا [Added title page title]

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Minufiya journal of agricultural research, 2013 V. 38 (3) Part 1 [electronic resource].

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In: Minufiya journal of agricultural research 2013.v.38(3)P.1Summary: In vitro screening of organic solvent (Methanol, ethyl acetate, dichloromelhane, butanol and water) extracts of Ulva sp. was carried out against pathogenic bacteria. Butanol extract showed highest activity against both Gram positive and Gram negative bacteria such as Bacillus subtilis strain-AN5 (+++), Bacillus cereus strain-AN19 (++), Streptococcus sp.(++) and staphylococcus epidermis (++), Escherichia coli DH5a (+++), Escherichia coli 107 (++). Both water and ethyl acetate extracts showed moderate activity against tested bacteria. While dichloromethane extract inhibited the growth of Escherichia coli 107 (+) and Bacillus subtillus strain-AN5 (+). The result of qualitative detection of chemical constituency showed presence of alkaloids, tannin, saponin, steroid, terpenoid, flavonoid and cardic glycoside and absence of phlobatannin.

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In vitro screening of organic solvent (Methanol, ethyl acetate, dichloromelhane, butanol and water) extracts of Ulva sp. was carried out against pathogenic bacteria. Butanol extract showed highest activity against both Gram positive and Gram negative bacteria such as Bacillus subtilis strain-AN5 (+++), Bacillus cereus strain-AN19 (++), Streptococcus sp.(++) and staphylococcus epidermis (++), Escherichia coli DH5a (+++), Escherichia coli 107 (++). Both water and ethyl acetate extracts showed moderate activity against tested bacteria. While dichloromethane extract inhibited the growth of Escherichia coli 107 (+) and Bacillus subtillus strain-AN5 (+). The result of qualitative detection of chemical constituency showed presence of alkaloids, tannin, saponin, steroid, terpenoid, flavonoid and cardic glycoside and absence of phlobatannin.

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