Isolation of the major triterpenoids from neem oil in pure form by a direct preparative High performance liquid chromatography procedure is presented. As neem oil is an important component of Neem based insecticidal formulations, a simple, isocratic analytical HPLC procedure for quantitation (relative abundance) of these major bioactive triterpenoids has been developed.
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Govindachari et al. (1995) studied this question.
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