Development of the Major Triterpenoids and Oil in the Fruit and Seeds of Neem (Azadirachta indica) |
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Authors: | JOHNSON SHAUN; MORGAN E DAVID; PEIRIS COLIN N |
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Institution: | Department of Chemistry, Keele University, Keele, Staffordshire, ST5 5BG, UK Department of Crop Science, University of Peradeniya, Perideniya, Sri Lanka |
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Abstract: | In order to learn the best time for harvesting Neem (Azadirachtaindica) seeds, the amount of the five major triterpenoids, togetherwith the oil content have been determined throughout a fruitingseason in six selected trees in Sri Lanka. The triterpenoidcontent and the relative proportions of the major compoundschanged little from the hard green fruit stage to mature seeds,while the oil content increased markedly with time. The highestcontent of azadirachtin (10 mg g-1seed kernels) was recordedin newly ripened seeds. There was some loss of salannin andazadirachtin in storage after harvesting for up to 6 months. Azadirachtin; salannin; nimbin; neem seeds; neem fruit; seasonal change; neem oil; seed storage; Azadirachta indica ; Meliaceae |
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