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A study of oil-bearing seeds from indigenous plants
In the course of this investigation, the seeds and fruit of the following species have been investigated: (1) Three members of the genus Ximenia viz., X. caffra Sond., X caffra var. natalensis Sond. and X. americana var. microphylla Welw., commonly known as "sour plum". (2) Sclerocarva caffra Sond.,...
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| Format: | Thesis |
| Language: | English |
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Department of Chemistry
2016
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| _version_ | 1867613208854921216 |
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| access_status_str | Open Access |
| author | Lighthelm, Salomon Petrus |
| author2 | Rapson, W S |
| author_browse | Lighthelm, Salomon Petrus Rapson, W S |
| author_facet | Rapson, W S Lighthelm, Salomon Petrus |
| author_sort | Lighthelm, Salomon Petrus |
| collection | Thesis |
| description | In the course of this investigation, the seeds and fruit of the following species have been investigated: (1) Three members of the genus Ximenia viz., X. caffra Sond., X caffra var. natalensis Sond. and X. americana var. microphylla Welw., commonly known as "sour plum". (2) Sclerocarva caffra Sond., commonly known as Maroola. (3) Three members of the Strychnos family viz. Strychnos innocua, Strychnos dysophylla and Strychnos Scoccoloides. The oil content of the kernels of the Ximenia species and of Sclerocarva caffra Sond. has been determined, as well as the oil content of the fruit pulp and kernels of the Strychnos species. As the oil content of the fruit of the Strychnos species was found to be extremely low, work on these species was not carried further. The composition of the kernel oils of the other species was, however, determined. The absorption spectra of the oils from the Ximenia species revealed the presence of a conjugated acid. This acid has been isolated and characterised as Octadeca-11-ene-9-ynoic acid, the common name Ximenynic acid, is proposed for it. Two other unsaturated acids, Ximenic acid and Lumeniqueic acid were isolated in 95-97% purity. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/22403 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:29.432Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Chemistry |
| publisherStr | Department of Chemistry |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/22403 A study of oil-bearing seeds from indigenous plants Lighthelm, Salomon Petrus Rapson, W S Chemistry In the course of this investigation, the seeds and fruit of the following species have been investigated: (1) Three members of the genus Ximenia viz., X. caffra Sond., X caffra var. natalensis Sond. and X. americana var. microphylla Welw., commonly known as "sour plum". (2) Sclerocarva caffra Sond., commonly known as Maroola. (3) Three members of the Strychnos family viz. Strychnos innocua, Strychnos dysophylla and Strychnos Scoccoloides. The oil content of the kernels of the Ximenia species and of Sclerocarva caffra Sond. has been determined, as well as the oil content of the fruit pulp and kernels of the Strychnos species. As the oil content of the fruit of the Strychnos species was found to be extremely low, work on these species was not carried further. The composition of the kernel oils of the other species was, however, determined. The absorption spectra of the oils from the Ximenia species revealed the presence of a conjugated acid. This acid has been isolated and characterised as Octadeca-11-ene-9-ynoic acid, the common name Ximenynic acid, is proposed for it. Two other unsaturated acids, Ximenic acid and Lumeniqueic acid were isolated in 95-97% purity. 2016-11-01T10:36:14Z 2016-11-01T10:36:14Z 1951 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/22403 eng application/pdf Department of Chemistry Faculty of Science University of Cape Town |
| spellingShingle | Chemistry Lighthelm, Salomon Petrus A study of oil-bearing seeds from indigenous plants |
| thesis_degree_str | Doctoral |
| title | A study of oil-bearing seeds from indigenous plants |
| title_full | A study of oil-bearing seeds from indigenous plants |
| title_fullStr | A study of oil-bearing seeds from indigenous plants |
| title_full_unstemmed | A study of oil-bearing seeds from indigenous plants |
| title_short | A study of oil-bearing seeds from indigenous plants |
| title_sort | study of oil bearing seeds from indigenous plants |
| topic | Chemistry |
| url | http://hdl.handle.net/11427/22403 |
| work_keys_str_mv | AT lighthelmsalomonpetrus astudyofoilbearingseedsfromindigenousplants AT lighthelmsalomonpetrus studyofoilbearingseedsfromindigenousplants |