Recovery of Oils and Fats from Oilseeds and Fatty Materials

Williams, Maurice A.

doi:10.1002/047167849x.bio066

Cited by 25 publications

(13 citation statements)

References 94 publications

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“…Hexane has favorable characteristics to the extraction process of oils, such as high stability, high selectivity, low corrosivity, narrow boiling range (Johnson & Lusas, ; Li et al, ; Williams, ), low raffinate retention index values in comparison with polar solvents (Menezes, ). However, there are negative characteristics associated with this solvent, such as high toxicity, flammability and explosiveness, besides being of fossil origin (Harris & Corcoran, ).…”

Section: Introductionmentioning

confidence: 99%

Solvent effect on the extraction of soluble solids from murici and pequi seeds

Araújo

Oliveira²,

Menezes

et al. 2018

J Food Process Engineering

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The Brazilian cerrado has native species with great potential for use, like murici (Byrsonima crassifolia), and pequi (Caryocar brasiliense Camb). The seeds of these fruits are rich in oils and bioactive compounds. The extraction by solvent is widely used to extract oils from the seeds, being hexane the most used solvent in this process. The objective of this work was to evaluate the effect of alternative solvents on oil/soluble solids extraction efficiency and raffinate retention index of solvent extraction of pequi and murici seeds and thermodynamics parameters of the process, using organic green solvents (ethanol, isopropanol, and acetone) and hexane. The extraction has been performed in a shaker using three different temperatures (35, 45, and 55 °C) at the seed:solvent mass ratio of 1:5 (wt/wt). In the extraction with pure solvents the most efficient solvent for both seeds was hexane, at 55 °C, once greater yield and lower retention index were obtained for this condition, along with isopropanol, for pequi seeds. The thermodynamic analysis of the extraction process for both seeds demonstrated positive results to ΔH, and ΔS, and negative results to ΔG, showing the endothermic nature of the process and its spontaneity. Practical applications A great amount of seeds is daily being wasted from industries and households of an agricultural country like Brazil. In addition, the oil from murici and pequi seeds has enormous and important potential as an intermediate raw material for food and pharmaceutical industries. So, the present experimental study is composed of the recovery of the soluble solids from these fruits’ seeds through a cost‐effective method using green solvents, which are environmentally safe. For this purpose, pure ethanol, pure acetone, and pure isopropanol were used as solvents for the extraction process, and compared to the regular hexane. Parametric effects were also investigated on the extraction process to collect the data for the economic process design, and to encourage new researches.

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Section: Introductionmentioning

confidence: 99%

Solvent effect on the extraction of soluble solids from murici and pequi seeds

Araújo

Oliveira²,

Menezes

et al. 2018

J Food Process Engineering

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“…Biodiesel Synthesis From S. foetida Seed Oil S. foetida seed oil was converted into biodiesel, and oil content and FFA contents were determined. Based on dry biomass, the extracted oil percentage was 40% which is higher as compared to other edible and non-edible oil sources studied in previous literature, such as Pongamia oil (37%) (Baskar et al, 2016), Melia Azedarch fruit oil (39%) (Stavarache et al, 2008), Rocket seed (35%) (Chakrabarti et al, 2011), Soybean (18-22%) (Williams, 2005;Moser, 2010). Biodiesel quality and yield highly depend upon the FFA contents.…”

Section: Resultsmentioning

confidence: 81%

Comparative Study of Liquid Biodiesel From Sterculia foetida (Bottle Tree) Using CuO-CeO2 and Fe2O3 Nano Catalysts

et al. 2019

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This study examined the potential of nanocatalyst CuO-CeO 2 and Fe 2 O 3 for efficient conversion of Sterculia foetida seed Oil into biodiesel. S. foetida contains 40% oil content and low free fatty acid value (0.18 mg KOH/g). The synthesized nanocatalyst was characterized using X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), and Scanning Electron Microscopy (SEM) techniques. The maximum conversion was achieved (92% yield) using CuO-CeO 2 at 0.25% catalyst loading. The optimized reaction was carried out by experimental variables included molar ratio (1:9), temperature (70 • C), reaction time (3 h) and stirring rate (600 rpm) using reflux transesterification method. The XRD results showed the size of crystals with order 54.4 nm for CuO-CeO 2 and 31.3 nm for Fe 2 O 3. The SEM images of CuO-CeO 2 showed spherical structure having an average particle size of 32.3 nm. SEM images of Fe 2 O 3 showed the size ranges from 46.27 to 28.76 nm having regular morphology, including spherical shape. The FT-IR analysis of this nanocatalyst also reinforced the results of this study. Gas Chromatography Mass Spectroscopy (GC-MS) and Fourier Transform Infrared Spectroscopy (FT-IR) confirmed the efficient conversion of S. foetida seed oil into biodiesel using prepared nanocatalysts. The prepared nanocatalysts are cheaper, readily available and can be used for industrial scale biofuel production assembly, making it economically feasible and more cost effective.

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“…It gives an idea on how the oil needs to be stored. The higher the iodine index, the higher the degree of unsaturation, and the shorter the shelf-life of the oil (Hui 1996). In our samples, this parameter varied from 10.2 to 30.5 g/100g of oil while red oils obtained from Amaranthus hybridus seeds have a high iodine value (100 g/100g) (Dhellot et al, 2006).…”

Section: Parameters Of Oil Qualitymentioning

confidence: 68%

Heterosis and Heritability of Chemical Quality of Butter Derived from Some Cocoa (Theobroma Cacao L.) Clones

Onomo¹,

Mbia²,

Achu³

et al. 2016

ijSciences

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Butter from dry cocoa beans of five cocoa (Theobroma cacao L.) clones and their intercrossed hybrids were analyzed for chemical quality (acid, peroxide and iodine) in order to gain insight on the heterosis and broadsense heritability values for these traits. Standard procedures were used for estimation of the lipid content and the indices. Hybrid F20 had the highest lipid content (59.7%) while the parent SCA12 and hybrid F12 had the lowest with 44.5 and 45% respectively. The acid index varied between 19.4 and 28.8 mg KOH/g, iodine index from 10.2 to 30.5 g/100g and peroxide index from 0.3 to 7.3 meq.g O2/kg. The acid index was higher than recommended limits for edible oils, iodine index lower and peroxide index within the international norms for conventional oils. Hybrids F12, F40 and F79 presented a positive mid-parent heterosis for acid index while F14, F13, F20 and F79 showed it for peroxide index. With regards to best-parent heterosis, only F40, F13 and F79 for acid index and F14 and F13 for peroxide index showed positive heterosis effect. For iodine index, about 71 % of hybrids showed a positive midparent heterosis. The acid and peroxide indices showed high heritability (while the iodine index had moderate heritability) estimates and this heritability could be said to be cytoplasmic except for the reciprocal hybrids F13 and F79 (acid index). The Principal component analysis categorized two distinct groups of six individuals each. Quality characteristics were moderate for butter obtained from the first cluster and lower for the second one. When all these quality parameters are taken into account, F79 and its reciprocal hybrid F13 showed the highest hybrid vigour. Their parents can be therefore considered as the best combination for producing hybrids with high nutritional oil quality vigour.

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Recovery of Oils and Fats from Oilseeds and Fatty Materials

Cited by 25 publications

References 94 publications

Solvent effect on the extraction of soluble solids from murici and pequi seeds

Solvent effect on the extraction of soluble solids from murici and pequi seeds

Comparative Study of Liquid Biodiesel From Sterculia foetida (Bottle Tree) Using CuO-CeO2 and Fe2O3 Nano Catalysts

Heterosis and Heritability of Chemical Quality of Butter Derived from Some Cocoa (Theobroma Cacao L.) Clones

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