Antibacterial activity of ethanol extract and decoction from Avicennia alba Blume growing in the Can Gio Mangrove Biosphere Reserve, Vietnam

Dao Thien An 1, Dang Thi Ngoc Thanh 2, *, Pham Van Ngot 1 And Huynh Nguyen Van Anh 2

1 Faculty of Biology, HCMC University of Education, 280 An Duong Vuong Street, Ward 4, District 5, Ho Chi Minh City, Vietnam.
2 Faculty of Natural Science Pedagogy, Sai Gon University, 273 An Duong Vuong Street, Ward 3, District 5, Ho Chi Minh City, Vietnam.
 
Research Article
GSC Biological and Pharmaceutical Sciences, 2022, 21(01), 152–159.
Article DOI: 10.30574/gscbps.2022.21.1.0342
Publication history: 
Received on 30 July 2022; revised on 06 September 2022; accepted on 08 September 2022
 
Abstract: 
This study was conducted to find out the antibacterial ability of a folk medicinal plant in Can Gio Mangrove Biosphere Reserve, Avicennia alba Blume. Leaf powder of A. alba derived from 3 different locations in the Biosphere Reserve was used to make ethanol extracts and decoctions. Methods to evaluate antibacterial ability included agar well diffusion, and Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC). The results showed that the ethanol extract from Dan Xay site was resistant to 6 tested bacterial strains including Bacillus cereus, Bacillus subtilis, Staphylococcus aureus, Enterococcus faecium, Pseudomonas aeruginosa, Escherichia coli. Most of the decoction samples had bacteriostatic and bactericidal properties with MBC/MIC rates ranging from 1.43 to 10.0.
 
Keywords: 
Avicennia alba Blume; Can Gio Mangrove Biosphere Reserve; Decoction; Ethanol extract; Minimum Inhibitory Concentration; Minimum Bactericidal Concentration
 
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