dc.contributor.author | Kariuki, David | |
dc.contributor.author | Njiru, S. N. | |
dc.date.accessioned | 2019-03-19T07:32:37Z | |
dc.date.available | 2019-03-19T07:32:37Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | D.K. K, S.N. N. "Spectrophotometric Evaluation of Rotenone Extraction from Leaves and Seeds of Mature Tephrosia Vogelii Plant.". 2018. | en_US |
dc.identifier.uri | https://www.researchgate.net/publication/328537040_Spectrophotmetric_evaluation_of_rotenone_extraction_from_leaves_and_seeds_of_mature_Tephrosia_vogelii_plant | |
dc.identifier.uri | http://hdl.handle.net/11295/106449 | |
dc.description.abstract | The percentage yield of rotenone extracted from Tephrosia vogelii leaves and seeds was investigated. Ten
samples of well ground leaves and seeds were each subjected to extraction in soxhlet extraction system
using trichloromethane, ethanol and methanol solvents for 24 h at room temperature. The maximum
absorption wavelength of rotenone was determined using Ultra violet-visible spectrophotometer. Different
solvent extracts were quantified using high performance liquid chromatography instruments fitted with
Ultra Violet detector and their yield expressed as percentage rotenone. Trichloromethane recorded the
highest rotenone yield from both leaves (8.3 and seeds 2.7%) compared to the other two solvents. Ethanol
was second with 5.9% in leaves and 1.9% in seeds while methanol had 4.8% in leaves and 1.6% in seeds. In
general, the leaves extracts were found to have a higher rotenone percentage yield by an average factor of
3 compared to seeds. Rotenone can be commercially extracted from T. Vogelii using ethanol that is locally
available to complement natural pyrethrum insecticide industry. | en_US |
dc.language.iso | en | en_US |
dc.publisher | University of Nairobi | en_US |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 United States | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/us/ | * |
dc.subject | Rotenone, Tephrosia vogelii, solvents, seeds, leaves. | en_US |
dc.title | Spectrophotmetric evaluation of rotenone extraction from leaves and seeds of mature Tephrosia vogelii plant | en_US |
dc.type | Article | en_US |