Potential biopesticides from Datura alba and Calotropis gigantea: Extraction, analysis, and reported compounds

The growing demand for eco-friendly bio-based agrochemicals with lower health hazards and optimal pest management options boosts the production and utilization of biopesticides. This review provides a comprehensive overview of two toxic weed species Datura alba (Solanaceae family), and Calotropis gigantea (Asclepiadaceae family) with a specific focus on extraction with various solvents, phytochemistry, and biopesticidal activities. The data presented in this article shows that these two toxic weeds species have been studied and reported for biopesticidal activities like antifeedant, ovicidal, insecticidal, larvicidal, antibacterial, and repelling ability against various insects/crop pests. Phytochemical analysis shows that these two weed species have distinct biochemical profiles. However, studies lack systematic screening of the biochemical profiles. In addition, the review highlights the gaps in previous research and suggests that there is a need for well-detailed phytochemical profiling, spectrum of action and mode of action for the future use of these weed plants in the development of biological control agents.