Citrus peel and pulp – this is a growing problem of waste in the food industry and in everyday life. However, there is the potential to get something useful out of it. Work in the village International Journal of Environment and Waste Management describes a simple method of steam distillation, which uses a domestic pressure cooker to extract useful essential oils from the peel of sweet lime (mosambi, Citrus limetta).
Waste shells of mosambi can be obtained in huge quantities in many fruit juice stores in Delhi and other places where people make juice in their homes. Research shows how these extracted essential oils possess antifungal, larvicidal, insecticidal and antimicrobial activity and therefore can be a useful source of inexpensive products for plant protection, pest control and cleaning at home and more.
Using waste streams from the village food industry as a source of raw materials for other industries is on the rise. However, to be truly beneficial from an environmental point of view, the extraction of useful materials from such wastes must be close to carbon neutral and largely non-polluting. Chemists Tripti Kumari and Nandana Pal Chowdhury of the University of Delhi and Hrithik Chauhan of the Bharati Vidyapita College of Engineering in New Delhi, India, used relatively environmentally safe steam distillation followed by solvent extraction to obtain solvent mosaic using hexane access. . . “The reported method of production is waste-free, energy efficient and gives a good harvest,” the team wrote.
The team demonstrated the antibacterial activity of the mined essential oils against bacteria including Bacillus subtilis and Rhodococcus equi. The same oils have also shown activity against fungal strains such as Aspergillus flavus and Alternaria carthami. The extracts also show deadly activity against mosquito and cockroach larvae. Researchers believe that with the appropriate adaptation, to eliminate the need for an organic solvent step, one could develop an internal approach to making such essential oils from citrus peels at home. They believe this will bring science home and provide an effective alternative to expensive manufactured sprays and products.
Tripty Kumari et al, Masambia Environmental Mining (Citrus lime) essential oil from fruit peel waste and its potential use as a larvicidal, insecticidal and antimicrobial agent, International Journal of Environment and Waste Management (2022). DOI: 10.1504 / IJEWM.2022.122683
Citation: Sweet lime oil defeats pests (2022, May 13) obtained May 14, 2022 from https://phys.org/news/2022-05-sweet-lime-oils-defeat-pests.html
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