Sorrel (Hibiscus sabdariffa) Seed Oil Extraction Optimization and Quality Characterization

Betiku, Eriola; Adepoju, T.F.

doi:10.9734/acsj/2013/2777

Cited by 24 publications

(16 citation statements)

References 17 publications

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“…The result of the specific gravity and refractive index was in agreement with 0.88 and 1.464 (25ºC), reported by Afolabi et al, 8 oil extraction from Parinari polyandra. The result of the specific gravity also conforms well to 0.88, reported by Betiku and Adepoju, 14 in extraction of oil from sorrel seed. The results obtained from each of these properties evaluated were found to be in agreement with the ASTM D6751 standard for biodiesel.…”

Section: Physicochemical Properties Of the Extracted Sandbox Oilsupporting

confidence: 90%

Optimization of Solvent Extraction of Oil from Sandbox Kernels (Hura Crepitans L.) by a Response Surface Method

Oniya

Oyelade

Ogunkunle

et al. 2017

Energy and Policy Research

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The use of vegetable oil as feedstock for biodiesel production is controversial as a result of the challenges of a food-fuel crisis associated with the use of edible oils for biodiesel production and use of arable land for energy feedstock generation. This work, therefore, focused on the extraction of oil from non-edible seed such as sandbox seed using a solvent extraction method, evaluation of optimal conditions for oil extraction from sandbox, and testing the fuel properties of extracted sandbox oil. A Box-Behnken design of response surface methodology (RSM) with 17 experimental runs was used to investigate the optimum conditions for the extraction, and the selected variables were effective seed/ solvent ratio (0.04, 0.06, 0.08 g/ml), extraction temperature (65, 60, 75ºC), and extraction time (3, 5, 7 h). Selected fuel properties (specific gravity, viscosity, cloud point, pour point, density, and refractive index) of the extracted oil were determined according to American Society for Testing Materials (ASTM) standards.The optimum oil yield (63.4%) was obtained at the seed/solvent ratio, extraction temperature, and extraction time of 0.05 g/ml, 68.13ºC, and 5 h, respectively The viscosity at 30ºC, specific gravity, density, cloud point, pour point, and refractive index of the extracted oil were 4.55 mm 2 /s, 0.91, 910 kg/m 3 , 5.9 ºC, -1.0ºC, and 1.4683, respectively. Thus the result from this research work has established the optimal conditions for solvent extraction of oil from sandbox seed. The fuel properties of the sandbox oil show that it is potentially suitable to produce biodiesel that can be used to power internal combustion engines. ARTICLE HISTORY

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Section: Physicochemical Properties Of the Extracted Sandbox Oilsupporting

confidence: 90%

Optimization of Solvent Extraction of Oil from Sandbox Kernels (Hura Crepitans L.) by a Response Surface Method

Oniya

Oyelade

Ogunkunle

et al. 2017

Energy and Policy Research

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“…Solvent extraction, however, has various advantages, including high yield, less turbidity, as well as environmentally friendly and cost-effective properties [18,19] as in the case of an extraction of oil from Jatropha curcus, described by Kim et al [20]. All three, Umer et al [21], Betiku et al [22], and Adepoju et al [23], studied the solvent extraction of oil from Moringa oleifera and sorrel seed and Chrysophyllum albidium oilseeds, respectively. In addition, Adepoju et al [23] also examined the quality characterization of Moringa oleifera oil.…”

Section: Introductionmentioning

confidence: 99%

Brette Pearl Spar Mable (BPSM): a potential recoverable catalyst as a renewable source of biodiesel from Thevetia peruviana seed oil for the benefit of sustainable development in West Africa

et al. 2018

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Background The energy requirements are globally on a rapid escalation, as technology advances, which is also true for a developing country like Nigeria, which is dependent on fossil fuels and its derivatives. Apart from its adverse effect on its economy, it has also negative impacts on the health and the environment, in general. However, investments in renewable energy are faced by the competitive oil prices, the very high investment cost for renewable energy, and high local electricity prices. This paper appraises the attractiveness of investing in renewable energy sources over the continued use of non-edible oil for electricity generation. Methods This paper explores the application of biomass seed oil to produce a renewable fuel (biodiesel) using heterogeneous base catalyst. Meanwhile, two-step processes were employed to produce the biofuel. In the first step (esterification), the acid value of the oil was reduced to the recommended limit (FFA ≤ 1.5) using H2SO4, while in the second step (transesterification), the catalyst calcination of grounded Brette Pearl Spar Mable (BPSM) pre-soaked in methanol was used as a biobase for biodiesel production. For the optimization, minitab response surface (MRS) and artificial neural network (ANN) were employed to model and optimize the process variables responsible for the optimum production of the oil and the biodiesel. Results The result presented showed that T. peruviana seed was found to be rich in oil with an average yield of 44.00% (w/w), and the oil was highly unsaturated with a high FFA. The maximum experimental biodiesel yield obtained was 86.00% at a catalyst amount of 4 g, a reaction time of 70 min, and a methanol/oil ratio of 0.1(v/v). This result was validated in triplicate under the same conditions, which yielded 85.70% (v/v) for MRS and 85.98% (v/v) for ANN. Furthermore, the optimization results also indicated that the p values (p < 0.05) of the model terms were significant, and the accuracy of the models achieved by MRS and ANN based on R2 depict that both optimization tools gave good predictions of R2 (MRS: R2 = 99.98% and ANN: R2 = 99.97%). The properties of the biodiesel, as described in other earlier reports using the same feedstock with different catalysts, indicated that the produced biodiesel had properties which agreed to those reported in the literature. Conclusions T. peruviana seed has proved to be a good biomass raw material for oil production, and its conversion to biofuel using a heterogeneous biobase catalyst showed its suitability as a renewable environmental friendly fuel. Government should invest in more sustainable sources of energy by imposing law for the use of non-edible oil or decreasing the price of electricity.

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“…However, the peroxide values obtained are lower than those of palm oils (16.08 mEq·kg −1 ) and sorrel (Hibicus sabdariffa) (5.00 ± 0.01 mEq·kg −1 ) respectively reported by Birnin-Yauri and Garba [19] and Betiku and Adepoju [63]. The variance analysis indicates that there are significant differences at the 5% threshold of the peroxide values.…”

Section: Chemical Propertiesmentioning

confidence: 60%

Impact of Extraction Method on Physicochemical Characteristics and Antioxidant Potential of <i>Adansonia digitata</i> Oil

Cissé¹,

Sow²,

Poucheret³

et al. 2018

FNS

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In this study, the effect of extraction processes on the physicochemical characteristics and antioxidant potential of baobab (Adansonia digitata L.) seed oil was evaluated. The oils were extracted, on the one hand, by cold pressing, and on the other hand, with three types of organic solvents (acetone, chloroform, n-hexane). The recorded results indicated that the extraction yield of baobab oil was significantly impacted by both the extraction method and the polarity of the solvent used. In addition, chloroform provides the best extraction yield (40.12 ± 0.607). However, extraction by cold pressure preserves at best the physicochemical and bioactive properties of the extracted oils. Indeed, the pressing oil contains a content of phenolic compounds (0.047 ± 0.0024 mgEAG/g of oil) and a very high radical scavenging activity (DPPH) (31.71% ± 0.61%). For the various oils extracted, the minimum and maximum values were 0.50 and 3.17 mEq·kg −1 ; 56.26 and 99.113 mgI 2 ·100 g −1 ; 1.457 and 1.465; 205.37 and 233.587 mgKOH/g respectively for the peroxide, iodine, refractive and saponification values. The color parameters (L*, a* and b*) of the oils also differ depending on the nature of the organic solvent used. Principal component analysis (PCA) and correlation analysis were performed on the physicochemical properties and the antioxidant potential of the extracted oils. Therefore, the results suggest the mixed use of acetone and hexane to obtain oil comparable to that extracted by cold pressing.

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Sorrel (Hibiscus sabdariffa) Seed Oil Extraction Optimization and Quality Characterization

Cited by 24 publications

References 17 publications

Optimization of Solvent Extraction of Oil from Sandbox Kernels (Hura Crepitans L.) by a Response Surface Method

Optimization of Solvent Extraction of Oil from Sandbox Kernels (Hura Crepitans L.) by a Response Surface Method

Brette Pearl Spar Mable (BPSM): a potential recoverable catalyst as a renewable source of biodiesel from Thevetia peruviana seed oil for the benefit of sustainable development in West Africa

Impact of Extraction Method on Physicochemical Characteristics and Antioxidant Potential of <i>Adansonia digitata</i> Oil

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Sorrel (Hibiscus sabdariffa) Seed Oil Extraction Optimization and Quality Characterization

Cited by 24 publications

References 17 publications

Optimization of Solvent Extraction of Oil from Sandbox Kernels (Hura Crepitans L.) by a Response Surface Method

Optimization of Solvent Extraction of Oil from Sandbox Kernels (Hura Crepitans L.) by a Response Surface Method

Brette Pearl Spar Mable (BPSM): a potential recoverable catalyst as a renewable source of biodiesel from Thevetia peruviana seed oil for the benefit of sustainable development in West Africa

Impact of Extraction Method on Physicochemical Characteristics and Antioxidant Potential of &lt;i&gt;Adansonia digitata&lt;/i&gt; Oil

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Impact of Extraction Method on Physicochemical Characteristics and Antioxidant Potential of <i>Adansonia digitata</i> Oil