Influence of extraction solvents on antioxidant and antimicrobial activities of the pulp and seed of Anisophyllea laurina R. Br. ex Sabine fruits

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Abstract

Objective: To evaluate the influence of extraction solvents on antioxidant and antimicrobial activities of the pulp and seed of Anisophyllea laurina R. Br. ex Sabine fruits. Methods: The antibacterial activities of pulp and seed extracts were tested by using disk diffusion method against eight bacterial strains and three fungal strains. Total phenolic, flavonoid, monomeric anthocyanin and tannin contents, and antioxidant activities were determined by spectrometric methods. Results: The antioxidant analysis of pulp extract revealed the strong radical scavenging capacity and total phenolic content (4. 329.66 mg of gallic acid/100 g), while seed extract showed the high antioxidant activity and total tannin content (5. 326.78 mg catechin equivalent/100 g). Antibacterial and antifungal activities of methanol and ethanol extracts exhibited potent growth inhibitory activity against Aeromonas hydrophila, Bacillus subtilis, Escherichia coli O157:H7, Pseudomonas aeruginosa, Salmonella Typhimurium and Staphylococcus aureus ATCC 6538 with minimum inhibitory concentration values ranged from 125 to 250 μg/mL. However, seed extract had the strongest potential activity against Aspergillus niger and Candida albicans with minimum inhibitory concentration value of 500 μg/mL compared to pulp extract. Conclusions: Our results therefore demonstrated that ethanol and methanol extractions were more efficient in extracting antioxidants and bioactive compound in pulp and seed. These results support that these plant extracts can be used for the treatment of bacterial infections.

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Onivogui, G., Letsididi, R., Diaby, M., Wang, L., & Song, Y. (2016). Influence of extraction solvents on antioxidant and antimicrobial activities of the pulp and seed of Anisophyllea laurina R. Br. ex Sabine fruits. Asian Pacific Journal of Tropical Biomedicine, 6(1), 20–25. https://doi.org/10.1016/j.apjtb.2015.09.023

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