Antibacterial activity of ethanol extract from Morinda citrifolia L. leaves and fruits collected in Tan Hung district, Long An province, Vietnam

Nguyen Thị Thanh Thao 1, Dang Thi Ngoc Thanh 2, Hoang Minh Tam 2, * and Pham Van Ngot 1

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
Magna Scientia Advanced Biology and Pharmacy, 2023, 10(01), 019–024
Article DOI: 10.30574/msabp.2023.10.1.0062
Publication history: 
Received on 30 August 2023; revised on 08 October 2023; accepted on 11 October 2023
 
Abstract: 
The study investigated antibacterial activity of Morinda citrifolia L. collected in Tan Hung district, Long An Province in Vietnam. Antimicrobial activity of Morinda citrifolia L. was evaluated based on size of antibacterial zones of ethanol leaf and fruit extracts by agar well diffusion method. The results showed that ethanol leaf and fruit extracts produced growth inhibition zones against tested bacteria with diameters of smaller than 9.0 mm (1.80 - 6.72 mm and 1.66 - 8.06 mm, respectively). The lowest ethanol concentration of extracts inhibited growth of tested bacteria was 200 mg mL-1 and their antibacterial activity increased with increase in tested concentrations. In general, antibacterial effects of fruit extracts were higher than those of leaf extracts on bacterial growth. Antibacterial activity of ethanol extracts of Morinda citrifolia L. leaves and fruits were evaluated at weak degrees, according to Manuanza’s rating scale of antibacterial zones.
 
Keywords: 
Antibacterial activity; Antibacterial zone; Morinda citrifolia L.; Fruit extract; Leaf extract
 
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