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Ibraheem, I., Abdel-Raouf, N., Mohamed, H., Fassihy, R., Hamed, S. (2017). Impact of The Microbial Suppression by Using The Brown Alga Dictyota dichotoma Extract. Egyptian Journal of Botany, 57(7th International Conf.), 205-214. doi: 10.21608/ejbo.2017.912.1072
Ibraheem Borie Mohammad Ibraheem; Neveen Abdel-Raouf; Hanaa Mahmoud Mohamed; Rehab Fassihy; Seham Hamed. "Impact of The Microbial Suppression by Using The Brown Alga Dictyota dichotoma Extract". Egyptian Journal of Botany, 57, 7th International Conf., 2017, 205-214. doi: 10.21608/ejbo.2017.912.1072
Ibraheem, I., Abdel-Raouf, N., Mohamed, H., Fassihy, R., Hamed, S. (2017). 'Impact of The Microbial Suppression by Using The Brown Alga Dictyota dichotoma Extract', Egyptian Journal of Botany, 57(7th International Conf.), pp. 205-214. doi: 10.21608/ejbo.2017.912.1072
Ibraheem, I., Abdel-Raouf, N., Mohamed, H., Fassihy, R., Hamed, S. Impact of The Microbial Suppression by Using The Brown Alga Dictyota dichotoma Extract. Egyptian Journal of Botany, 2017; 57(7th International Conf.): 205-214. doi: 10.21608/ejbo.2017.912.1072

Impact of The Microbial Suppression by Using The Brown Alga Dictyota dichotoma Extract

Article 28, Volume 57, 7th International Conf., October 2017, Page 205-214  XML PDF (1.19 MB)
Document Type: Regular issue (Original Article)
DOI: 10.21608/ejbo.2017.912.1072
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Authors
Ibraheem Borie Mohammad Ibraheem1; Neveen Abdel-Raouf2; Hanaa Mahmoud Mohamed3; Rehab Fassihy email 4; Seham Hamed5
1Botany and Microbiology department Faculty of Science,Beni-Suef University,Egypt
2Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.
3Zoology Department Faculty of Science,Beni-Suef University, Egypt
4Botany department,Faculty of Science, El-Minia University,Egypt
5Soil Microbiology Department, Soils, Water and Environment Institute, Agricultural Research Center, Giza, Egypt.
Abstract
IN THIS CONTEXT the brown alga Dictyota dichotoma isolated from Hurghada Sea-Shore, Red-Sea coast, Egypt (June 2015) was screened for its antimicrobial bioactivity. A laboratory experiment was conducted to test activity of ethanol extract of the brown alga Dictyota dichotoma against three types of Gram- positive and six of Gram-negative bacteria, and one type of fungi. Ethanol extract was selected for this study by using different concentrations (100, 200, 300, 400 mg) of alga extracts. Result revealed that the alga ethanolic extract exhibited high suppression activity against all tested pathogens. HPLC analysis of the chemical composition of algal extract was detect the presence of high amount of certain ingredients such as Flavonoids (Acacetin, Luteo.6-arabinose8-glucose, Naringin, Hespirtin, Rosmarinic and Naringenin by 3448.407, 453.209, 396.107, 387.429, 213.689 and 207.17 ppm, respectively) and Phenols (Benzoic, E-Vanillic, Pyrogallol, Catechein, Salycilic and Ellagic by 1075, 912, 785, 628 and 357 ppm, respectively). The present finding revealed that the tested alga can be used as possible natural source of active ingredients.
Keywords
Dictyota dichotoma ; antimicrobial activity; HPLC analysis
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