Initial Evaluation of Antioxidant and Antibacterial Activities of Several Medicinal Plant Extracts Collected in Vietnam

Le Tuan Anh, Pham Thi Thanh Hang, Nguyen Thi Bich Loan, Le Quynh Mai

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Published Sep 22, 2021
DOI: https://doi.org/10.25073/2588-1140/vnunst.5306

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How to Cite
ANH, Le Tuan et al. Initial Evaluation of Antioxidant and Antibacterial Activities of Several Medicinal Plant Extracts Collected in Vietnam. VNU Journal of Science: Natural Sciences and Technology, [S.l.], v. 37, n. 3, sep. 2021. ISSN 2588-1140. Available at: <https://js.vnu.edu.vn/NST/article/view/5306>. Date accessed: 26 apr. 2024. doi: https://doi.org/10.25073/2588-1140/vnunst.5306.
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Issue
Vol 37 No 3
Section
Original Articles

Main Article Content

Abstract

The diversity of medicinal plants in Vietnam is a rich source to develop novel health products. In this study, the antioxidant and antimicrobial activities of ethanolic extracts of Pluchea indica, Drynaria fortunei, Stephania glabra, lemongrass (Cymbopogon citratus) and lime (Citrus aurantifolia) mixture, and ginger (Zingiber officinale) and kumquat (Citrus japonica) mixture, were evaluated. The extract of ginger and kumquat mixture exhibited the highest free radical scavenging activity (85%), followed by P. indica and S. glabra (60% and 53%, respectively) at the concentration of 0.1 mg/ml. Moreover, the agar well diffusion assay revealed that the extract of S. glabra and the extract of ginger and kumquat mixture were effective in inhibition against Bacillus cereus, Staphylococcus aureus, and Vibrio parahaemolyticus. Especially, the extract of S. glabra at the concentration of 100 mg/ml showed the highest inhibition zone diameter (13±1.73 mm) against B. cereus, which was significantly larger than that of Ceftriaxone (5 mg/ml) and other extracts.

Keywords: Medicinal plant, antioxidant, free radical scavenging, antibacterial activity.

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