Chemical Examination of the Leaves of AZADIRACHTA INDICA A. JUSS. (NEEM) for Insect Anti-Feedants.
The chemistry of the extractives from the leaves of Azadirachta indica and its closely related species, Melia azedarach is reviewed. Cold methylated spirit was resolved into four fractions on the basis of their solubilities in the non-polar solvent hexane and in aqueous alkali. Each of these fra...
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Obafemi Awolowo University
2014
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| Liŋkkat: | http://localhost:8080/xmlui/handle/123456789/3438 |
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| _version_ | 1810764569419710464 |
|---|---|
| author | Adesanya, Adepeju Olubamwo |
| author2 | Ogunkoya, L. |
| author_facet | Ogunkoya, L. Adesanya, Adepeju Olubamwo |
| author_sort | Adesanya, Adepeju Olubamwo |
| collection | DSpace |
| description | The chemistry of the extractives from the leaves of Azadirachta indica and its closely related species, Melia azedarach is reviewed.
Cold methylated spirit was resolved into four fractions on the basis of their solubilities in the non-polar solvent hexane and in aqueous alkali. Each of these fractions was tested for repellent activity on the bean seed weevil; Callosobruchus maculatus. three of the fractions inhibited the emergence of the bean seed weevils and were therefore considered to possess the expected insect repellent activity.
From one of these fractions, thick oil was isolated after purification using idolumn and thin layer chromatographic methods. Spectroscopic studies of this thick oil revealed the presence of one major compound whose molecule contained an ester group and a C=C in conjugation with another Pi electron system. |
| format | Thesis |
| id | oai:ir.oauife.edu.ng:123456789-3438 |
| institution | My University |
| language | English |
| publishDate | 2014 |
| publisher | Obafemi Awolowo University |
| record_format | dspace |
| spelling | oai:ir.oauife.edu.ng:123456789-34382023-05-13T11:10:27Z Chemical Examination of the Leaves of AZADIRACHTA INDICA A. JUSS. (NEEM) for Insect Anti-Feedants. Adesanya, Adepeju Olubamwo Ogunkoya, L. Azadirachta indica Melia azedarach The chemistry of the extractives from the leaves of Azadirachta indica and its closely related species, Melia azedarach is reviewed. Cold methylated spirit was resolved into four fractions on the basis of their solubilities in the non-polar solvent hexane and in aqueous alkali. Each of these fractions was tested for repellent activity on the bean seed weevil; Callosobruchus maculatus. three of the fractions inhibited the emergence of the bean seed weevils and were therefore considered to possess the expected insect repellent activity. From one of these fractions, thick oil was isolated after purification using idolumn and thin layer chromatographic methods. Spectroscopic studies of this thick oil revealed the presence of one major compound whose molecule contained an ester group and a C=C in conjugation with another Pi electron system. 2014-02-18T10:06:19Z 2018-10-29T11:08:01Z 2014-02-18T10:06:19Z 2018-10-29T11:08:01Z 1985 Thesis APA http://localhost:8080/xmlui/handle/123456789/3438 en PDF application/pdf Obafemi Awolowo University |
| spellingShingle | Azadirachta indica Melia azedarach Adesanya, Adepeju Olubamwo Chemical Examination of the Leaves of AZADIRACHTA INDICA A. JUSS. (NEEM) for Insect Anti-Feedants. |
| title | Chemical Examination of the Leaves of AZADIRACHTA INDICA A. JUSS. (NEEM) for Insect Anti-Feedants. |
| title_full | Chemical Examination of the Leaves of AZADIRACHTA INDICA A. JUSS. (NEEM) for Insect Anti-Feedants. |
| title_fullStr | Chemical Examination of the Leaves of AZADIRACHTA INDICA A. JUSS. (NEEM) for Insect Anti-Feedants. |
| title_full_unstemmed | Chemical Examination of the Leaves of AZADIRACHTA INDICA A. JUSS. (NEEM) for Insect Anti-Feedants. |
| title_short | Chemical Examination of the Leaves of AZADIRACHTA INDICA A. JUSS. (NEEM) for Insect Anti-Feedants. |
| title_sort | chemical examination of the leaves of azadirachta indica a juss neem for insect anti feedants |
| topic | Azadirachta indica Melia azedarach |
| url | http://localhost:8080/xmlui/handle/123456789/3438 |
| work_keys_str_mv | AT adesanyaadepejuolubamwo chemicalexaminationoftheleavesofazadirachtaindicaajussneemforinsectantifeedants |