Total Phenolic Content, Antioxidant and Antibacterial Activities from Centotheca lappacea L. Desv. Extract

Main Article Content

Naruwat Pakdee
Panicha Pongnaratorn
Warin Ohn-on
Jongkol Poonsawat
Pensiri Chan-ae
Ronnachai Poowanna

Abstract

This research aimed to investigate the antioxidant properties, total phenolic content, and antibacterial activity of Centotheca lappacea extract. The antioxidant activity was evaluated using the DPPH assay, total phenolic content was analyzed by the Folin-Ciocalteu method, and the antibacterial activity was tested using the disc diffusion method. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were determined to assess the extract's efficacy against bacteria. The results showed that C. lappacea extract exhibited significant antioxidant activity with an IC50 value of 21.182 µg/ml and a total phenolic content of 16.61 mg GAE/g extract. It effectively inhibited the growth of Streptococcus pyogenes with an inhibition zone, MIC, and MBC of 19.33±1.15 mm, 125 µg/ml, and 125 µg/ml, respectively. However, it did not inhibit the growth of Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, and Pseudomonas aeruginosa. These findings demonstrate that C. lappacea extract possesses antioxidant properties and exhibits antibacterial activity against S. pyogenes, suggesting its potential as a natural therapeutic agent.

Article Details

How to Cite
Pakdee, N., Pongnaratorn, P., Ohn-on , W., Poonsawat, J., Chan-ae, P. . ., & Poowanna, R. (2025). Total Phenolic Content, Antioxidant and Antibacterial Activities from Centotheca lappacea L. Desv. Extract. Rajamangala University of Technology Tawan-ok Research Journal, 18(1), 81–91. https://doi.org/10.63271/rmuttorj.v18i1.263302
Section
Research article
Author Biographies

Naruwat Pakdee, Rajamangala University of Technology Isan, Sakon Nakhon Campus

Department of Thai Traditional Medicine, Faculty of Natural Resources, Rajamangala University of Technology Isan, Sakon Nakhon Campus, Thailand

Panicha Pongnaratorn, Rajamangala University of Technology Isan, Sakon Nakhon Campus

Department of Thai Traditional Medicine, Faculty of Natural Resources, Rajamangala University of Technology Isan,  Sakon Nakhon Campus, Thailand

Warin Ohn-on , Rajamangala University of Technology Isan, Sakon Nakhon Campus

Department of Thai Traditional Medicine, Faculty of Natural Resources, Rajamangala University of Technology Isan, Sakon Nakhon Campus, Thailand

Jongkol Poonsawat, Rajamangala University of Technology Isan, Sakon Nakhon Campus

Department of Thai Traditional Medicine, Faculty of Natural Resources, Rajamangala University of Technology Isan, Sakon Nakhon Campus, Thailand

Pensiri Chan-ae, Rajamangala University of Technology Isan, Sakon Nakhon Campus

Department of Thai Traditional Medicine, Faculty of Natural Resources, Rajamangala University of Technology Isan, Sakon Nakhon Campus, Thailand

Ronnachai Poowanna, Rajamangala University of Technology Isan, Sakon Nakhon Campus

Department of Thai Traditional Medicine, Faculty of Natural Resources, Rajamangala University of Technology Isan, Sakon Nakhon Campus, Thailand

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