POLYPHENOL, FLAVONOID CONTENTS AND ANTIOXIDANT ACTIVITIES, ANTIBACTERIAL ACTIVITIES OF ETHANOL EXTRACTS  FROM Sphagneticola trilobata L. Pruski COLLECTTED IN DA NANG

Nguyễn Thị Thu Trang; Huỳnh Minh Đạo; Nguyễn Thanh Quang; Lê Hương Ly

doi:10.34238/tnu-jst.8892

POLYPHENOL, FLAVONOID CONTENTS AND ANTIOXIDANT ACTIVITIES, ANTIBACTERIAL ACTIVITIES OF ETHANOL EXTRACTS FROM Sphagneticola trilobata L. Pruski COLLECTTED IN DA NANG

About this article

Received: 03/10/23 Revised: 30/10/23 Published: 07/11/23

Authors

1. Nguyen Thi Thu Trang , Da Nang University of Medical Technology and Pharmacy
2. Huynh Minh Dao, Da Nang University of Medical Technology and Pharmacy
3. Nguyen Thanh Quang, Da Nang University of Medical Technology and Pharmacy
4. Le Huong Ly, Da Nang University of Medical Technology and Pharmacy

Abstract

S. trilobata (L.) Pruski originates from South America, Central America, Mexico... with quite a rich chemical composition and many effects such as antioxidant, antibacterial, anti-inflammatory, pain relief, anti-cancer…. The study aimed to determine the ethanol concentration and the part using S. trilobata with the highest total polyphenol and flavonoid contents. At the same time, the antioxidant activities were investigated by DPPH free radical scavenging and antibacterial activities by agar well diffusion method. The results obtained total flavonoid contents ranged from 0.13 to 6.80 mg QE/g extract, ethanol 96^o and leaves contained the highest content; the polyphenol contents ranged from 16.80 – 26.47 mg GA/g extract, ethanol 80^o and leaves contained the highest content and showed the highest antioxidant activities with IC₅₀ = 54.04 μg/mL. At a tested concentration of 200 mg/mL: the flower, stem and leaf of S. trilobata showed antibacterial effects on S. aureus, it induced inhibitory zones 7.13-12.10 mm, 1.00-3.23 mm and 7.73-10.60 mm, did not affect E. coli and P. aeruginosa. The results aimed to partly explain its folk application, increase the value of S. trilobata distributed in Da Nang, and supplement data sources for further research.

Keywords

Da Nang; Flavonoid; Antioxidant activity; Antibacterial; Phenolic; Sphagneticola trilobata

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DOI: https://doi.org/10.34238/tnu-jst.8892

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