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Quantitative and qualitative assessment on the suitability of seed oil from water plant (Trichilia emetica) for soap making

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dc.creator Nchimbi, Hamisi Yunus
dc.date 2020-11-24T13:29:54Z
dc.date 2020-11-24T13:29:54Z
dc.date 2020
dc.date.accessioned 2022-10-20T13:09:17Z
dc.date.available 2022-10-20T13:09:17Z
dc.identifier Nchimbi, H. Y. (2020). Quantitative and qualitative assessment on the suitability of seed oil from water plant (Trichilia emetica) for soap making. Saudi Journal of Biological Sciences.
dc.identifier DOI: 10.1016/j.sjbs.2020.07.019
dc.identifier http://hdl.handle.net/20.500.12661/2560
dc.identifier.uri http://hdl.handle.net/20.500.12661/2560
dc.description Full text article. Also available at https://doi.org/10.1016/j.sjbs.2020.07.019
dc.description Despite widespread and its local available as a naturalized hedge and shade plant, the potential of Trichilia emetica was not utilized in soap making by the majority of local community in various parts of Dodoma, Tanzania. This study aimed to assess the quantity (yields) and quality (Acid Values (AVs), %Free Fatty Acids (%FFAs) and Saponification Values (SVs) of seed oil from water plant (T. emetica), suitable for soap making application. Solvent extraction method was used during oil extraction, where by 50gm of preheated and powdered seed materials were immersed in 250 ml of n-hexane in 1:5 (w/v) to dissolve the oil contained in the seed cake. The oil was collected by vaporizing solvent out through Rotary evaporation at 60 _C. Also standard titration methods were used to obtain SVs, AVs and %FFAs of the extracted oil. Results showed that T. emetica seeds contained higher quantity of oil (48.4%_ 50.2%) than many reported commercial plant seed oils. Also, the study found higher AV (7.4 mgKOH/g_7.8 mgKOH/g), %FFA (3.7% to 3.9%) and SVs (189.5 mgKOH/g _ 191.4 mgKOH/g) than the maximum acceptable limits of 0.50 mg KOH/g, 0.020% and 175 mgKOH/g _ 187 mgKOH/g prescribed by ASTM standards (2002). The obtained results showed that, T. emetica seeds yielded high oil quantity with low qualities due to higher levels of acidity. But high SVs guarantees the possibility of using T. emetica seed oil in soap making. However, the oil requires purification in order to bring levels of acidity to acceptable standards and guarantee its normal use in soap making.
dc.language en
dc.publisher Elsevier
dc.subject Trichilia emetica
dc.subject Seeds oil
dc.subject Soap making
dc.subject Saponification value
dc.subject Acid value
dc.subject Water plant
dc.subject Tanzania
dc.subject Local community
dc.subject Dodoma
dc.subject Free Fatty Acids
dc.title Quantitative and qualitative assessment on the suitability of seed oil from water plant (Trichilia emetica) for soap making
dc.type Article


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