Antibacterial, Antifungal, and Insecticidal Potentials ofOxalis corniculataand Its Isolated Compounds

[摘要] Oxalis corniculatais a common medicinal plant widely used against numerous infectious diseases. The agrochemical potential of methanolic extract,n-hexane, chloroform, ethyl acetate, andn-butanolfractions were assessed to measure the antibacterial, antifungal, and insecticidal activities of the plant. The crude, chloroform, andn-butanolsoluble fractions showed excellent activities againstEscherichia coli,Shigella dysenteriae,Salmonella typhi, andBacillus subtilisbut have no activity againstStaphylococcus aureus. Similarly the crude,n-hexane, and chloroform fractions were also found to have significant activity against fungal strains includingFusarium solani,Aspergillus flexneri, andAspergillus flavusand have no activity againstAspergillus niger. Chemical pesticides have shown very good results at the beginning, but with the passage of time the need was realized to use the natural plant sources for the safe control of insects. The current study will provide minor contribution towards it. High mortality rate was recorded for the crude extract and chloroform fraction againstTribolium castaneum. The two isolated compounds 5-hydroxy-6,7,8,4′-tetramethoxyflavone (1) and 5,7,4′-trihydroxy-6,8-dimethoxyflavone (2) were evaluated for antibacterial, antifungal, and insecticidal activities. The results showed that compound2was more active than compound1against the tested bacterial strains and insects.

[学科分类] 分析化学