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Objective: The present study was aimed to screen the cytotoxic effect of thorn extracts of seven different plants.
Methodology: The methanol extract of thorn of seven different plants were investigated for cytotoxic activity on
Sf21 cell line using MTT (3-(4, 5-dimetylthiazol-2-yl)-2 and 5-diphenyltetrazolium bromide) assay. After exposure
of the cell line at different concentrations to the plant extract (1.56â€“500 Î¼g/mL), it was found that percentage of cell
viability decreased in dose dependent manner. Results: The extract of Acacia ferruginea showed potential cytotoxic
activity with IC50 value of 92.15 Î¼g/mL against Sf21 cell line. Among the studied plants Limonia aciddisima (L),
Gymnosporia senegalensis (L), Acacia nilotica and Acacia catechu (L) extracts were exhibited lesser cytotoxic
activity, whereas Acacia senegal, Aegel marmelos and Acacia ferruginea were exhibited maximum cytotoxic
activity on the Sf21 cell line and these 3 plant extracts has shown potent IC50 value of 188.5 Î¼g/mL, 307.6 Î¼g/mL,
92.15 Î¼g/mL respectively on Sf21 cell lines when compared to control Benzonitrile drug. It is clear from the study
that Acacia ferruginea is more cytotoxic to Sf21 cell lines compared to other plant extracts. The GCâ€“MS study of
Acacia feruginea showed that it has 37 bioactive components, of which some of the bioactive compounds are methyl
mannose (57.14), phenol (8.07), cyclopropane carboxylic acid, benzene-di-carboxylic acid (0.31), hydroxy gamma
butyrolactone (0.38), gamma sitosterol (3.52), Hexacosanol (3.83), and stigmasterol (4.65). Conclusion: The
bioactive components found in Acacia ferruginia are cytotoxic and insecticidal to other pest. It shows that thorn not
only defends themselves against the herbivores, but the specialized bioactive presence also plays a major defensive
role. Hence, some of the bioactive can be isolated, characterized, and be used as a potential herbicides.
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