Comparative study on the preparation and in vitro antibacterial activity of different solvent extracts from Baphicacanthus cusia and Strobilanthes bantonensis

doi:10.14088/j.cnki.issn0439-8114.2026.10.022

HUBEI AGRICULTURAL SCIENCES ›› 2026, Vol. 65 ›› Issue (10): 150-154.doi: 10.14088/j.cnki.issn0439-8114.2026.10.022

• Medicinal Plant • Previous Articles Next Articles

Comparative study on the preparation and in vitro antibacterial activity of different solvent extracts from Baphicacanthus cusia and Strobilanthes bantonensis

CHEN Lu^1a, LIU Yu^1a, HUANG Dan-na^1a, PAN Yu^1a, LI Yin^1a, XU Yong-li^1b, XIAO Lu², DENG Ri-jian^1a, WU Wu-wei^1a

1a.National Engineering Research Center for Southwest Endangered Medicinal Materials Resources Development; 1b.Guangxi Key Laboratory for High-Quality Formation and Utilization of Dao-Di Herbs, Guangxi Botanical Garden of Medicinal Plants, Nanning 530023, China;
2. Sichuan Provincial Key Laboratory of Animal Breeding and Genetics, Sichuan Animal Science Academy, Chengdu 610066, China

Received:2026-07-22 Online:2026-10-25 Published:2026-10-23

Abstract

Abstract: To compare the in vitro antibacterial activities of extracts with different polarities from Baphicacanthus cusia (Nees) Bremek. and Strobilanthes bantonensis Lindau, aqueous extraction and organic solvent extraction methods were adopted to prepare extracts of the two plants using different solvents. The agar plate well diffusion method was applied to determine the in vitro bacteriostatic effects of all extracts against Bacillus subtilis, Staphylococcus aureus, Pseudomonas aeruginosa and Escherichia coli. The results showed that aqueous extracts, aqueous extracts obtained by water extraction and alcohol precipitation, and chloroform extracts from the two plants exhibited varying degrees of inhibitory activity against Bacillus subtilis, Staphylococcus aureus and Pseudomonas aeruginosa, with inhibition zone diameters ranging from 5.41 to 16.99 mm, and no significant difference in antibacterial efficacy was observed between the two plant species. Petroleum ether extracts showed inhibitory effects on Staphylococcus aureus and Pseudomonas aeruginosa, with inhibition zone diameters of 5.32-7.70 mm, and their antibacterial activities also had no significant interspecific difference. Acetone extracts and ethanol extracts of different concentrations inhibited Bacillus subtilis and Staphylococcus aureus, with inhibition zone diameters of 5.94-11.45 mm, and no significant difference in performance between the two plants. Notably, the 70% ethanol and 95% ethanol extracts of Strobilanthes bantonensis Lindau showed inhibitory effects against Escherichia coli, with inhibition zone diameters of (6.42±0.54) mm and (7.74±0.55) mm, respectively, whereas the corresponding extracts of Baphicacanthus cusia (Nees) Bremek. showed no significant inhibitory effects against this bacterium.

Key words: Baphicacanthus cusia, Strobilanthes bantonensis, extracts, antibacterial activity, substitute medicinal material

CLC Number:

CHEN Lu, LIU Yu, HUANG Dan-na, PAN Yu, LI Yin, XU Yong-li, XIAO Lu, DENG Ri-jian, WU Wu-wei. Comparative study on the preparation and in vitro antibacterial activity of different solvent extracts from Baphicacanthus cusia and Strobilanthes bantonensis[J]. HUBEI AGRICULTURAL SCIENCES, 2026, 65(10): 150-154.

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Comparative study on the preparation and in vitro antibacterial activity of different solvent extracts from Baphicacanthus cusia and Strobilanthes bantonensis

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