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    XU Han hong 1,HE Dao hang 1,WEI Xiao yi 2,ZHANG Zhi xiang 1. Structrual Identification of Azadirachtin from the Seeds of Introduced Azadirachta indica A. Juss Planted in China[J]. Journal of South China Agricultural University, 2001, 22(3): 20-22. DOI: 10.7671/j.issn.1001-411X.2001.03.006
    Citation: XU Han hong 1,HE Dao hang 1,WEI Xiao yi 2,ZHANG Zhi xiang 1. Structrual Identification of Azadirachtin from the Seeds of Introduced Azadirachta indica A. Juss Planted in China[J]. Journal of South China Agricultural University, 2001, 22(3): 20-22. DOI: 10.7671/j.issn.1001-411X.2001.03.006
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    Structrual Identification of Azadirachtin from the Seeds of Introduced Azadirachta indica A. Juss Planted in China

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    • The substance FI 5 was isolated from the seeds of introduced neem trees ( Azadirachta indica A. Juss) planted in China by open column chromatography on silica gel. On the basis of spectroscopic analysis its structure was identified as azadirachtin. The result of no choice antifeedant experiment against the larvae of Pieris rapae showed that it had the most potential antifeedant activity.
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