Simultaneous Extraction and Separation of Oil and Azadirachtin from Seeds and Leaves ofAzadirachta indicausing Binary Solvent Extraction Article Swipe

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Azadirachtin Azadirachta Extraction (chemistry) Defatting Hexane Chromatography Solvent Chemistry Meliaceae Yield (engineering) Botany Organic chemistry Biology Pesticide Agronomy Materials science Metallurgy

Sheela Subramanian , Aiza Syuhaniz Salleh , Robert Thomas Bachmann , Md. Sohrab Hossain ·

YOU? · · 2019 · Open Access · · DOI: https://doi.org/10.20307/nps.2019.25.2.150 · OA: W2963598145

Conventional extraction of oil and azadirachtin, a botanical insecticide, from Azadirachta indica involves defatting the seeds and leaves using hexane followed by azadirachtin extraction with a polar solvent. In order to simplify the process while maintaining the yield we explored a binary extraction approach using Soxhlet extraction device and hexane and ethanol as non-polar and polar solvents at various ratios and extraction times. The highest oil and azadirachtin yields were obtained at 6 h extraction time using a 50:50 solvent mixture for both neem leaves (44.7 wt%, 720 mgAza/kgleaves) and seeds (53.5 wt%, 1045 mgAza/kgseeds), respectively.