Deacidification of Vegetable Oils by Solvent Extraction

Rodrigues, Christianne Elisabete da Costa; Gonçalves, Cintia B.; Batista, Eduardo Augusto Caldas; Meirelles, Antônio J. A.

doi:10.2174/187221207779814699

Cited by 50 publications

(10 citation statements)

References 36 publications

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“…Solvent extraction is other feasible deacidification method to decrease FFA from oils and has the advantage of small oil losses, low energy consumption, gentle oil treatment, and reduced waste products. Methanol, ethanol, amyl alcohol, acetone, or acetic ester can be used as solvents [8,9]. The main disadvantage of this process is the oil-solvent systems L-L equilibrium data required.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Deacidification Process for Camelina sativa Crude Oil by Molecular Distillation

et al. 2021

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Recovery and reuse of high-acidity vegetable oil waste (higher content of free fatty acids) is a major concern for reducing their effect on the environment. Moreover, the conventional deacidification processes are known to show drawbacks, such as oil losses or higher costs of wastewater treatment, for which it requires great attention, especially at the industrial scale. This work presents the design of a highly efficient and sustainable process for Camelina sativa oil deacidification by using an ecofriendly method, namely molecular distillation. Experimental studies were performed to identify operating conditions for removing of free fatty acids (FFA) by molecular distillation which involves the oil evaporation in high vacuum conditions. The experimental studies were supported by statistical analysis and technical-economic analysis. Response surface methodology (RSM) was employed to formulate and validate second-order models to predict deacidification efficiency, FFA concentration, and triacylglyceride (TAG) concentration in deodorized oil based on three parameters effects, validated by statistical p-value < 0.05. For a desirability function value of 0.9826, the optimal parameters of evaporator temperature at 173.5 °C, wiper speed at 350 rpm, and feed flowrate at 2 mL/min were selected. The results for process design at optimal conditions (using conventional and molecular distillation methods) showed an efficiency over 92%, a significant reduction in FFA (up to 1%), and an increase in TAG (up to 93%) in refined oil for both methods. From an economical point of view, the deacidification by molecular distillation of Camelina sativa oil is a sustainable process: no wastewater generation, no solvents and water consumption, and lower production costs, obtaining a valuable by-product (FFA).

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Section: Introductionmentioning

confidence: 99%

Highly Efficient Deacidification Process for Camelina sativa Crude Oil by Molecular Distillation

et al. 2021

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“…There are several modification processes: viz. hydrogenation, interesterification (chemical and enzymatic) or fractionation (dry, solvent and detergent fraction) (Rodrigues, et al, 2007). The hydrogenation process creates trans fatty acids which have a negative impact on health (Nor Aini et al 1999).…”

Section: Introductionmentioning

confidence: 99%

Physico-chemical characteristics and nutraceutical distribution of crude palm oil and its fractions

Kumar

Krishna

2014

Grasas y Aceites

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SUMMARY:Crude palm oil (CRPO) was dry fractionated at 25 °C to get crude palm olein (CRPOL, 77%) and crude palm stearin (CRPS, 23%). Low and high melting crude palm stearin (LMCRPS 14.3% and HMCRPS 8.7%) were separated by further fractionation of CRPS with acetone. The physico-chemical parameters and nutraceutical distribution showed variation in different fractions. The CRPO contained 514.7 mg·Kg −1 of β-carotene and 82.6%, 16.1%, 12.5% and 3.1% of it was distributed in CRPOL, CRPS, LMCRPS and HMCRPS respectively. The distribution of phytosterols in fraction was 1870 .2, 1996 .8, 1190 .9, 1290 for CRPO, CRPOL, CRPS, LMCRPS and HMCRPS respectively. Total tocopherol composition was 535.5, 587.1, 308.0, 305.6 and 36.2 mg·Kg −1 for CRPO, CRPOL, CRPS, LMCRPS and HMCRPS respectively. The results show that the fractionation of CRPO may be helpful in the preparation of nutraceutical-rich fractions.

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“…Chemical re-esterification with or without catalyst was carried out requiring temperatures as high as 270oC and inter atmosphere, resulting in higher energy usage and costs. Another method that is superior to chemical and physical refining is solvent extraction using short-chain hydrocarbons as solvents (39,40). These solvents selectively dissolve the fatty acids and can be separated from the remaining oil phase.…”

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confidence: 99%

Membrane Assisted Edible Oil Deacidification

Wadhwani

2022

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Although humans started using edible vegetable oils as a part of food, ages ago, there have been considerably lesser improvements in the way they are refined. Chemical and Physical Refining processes are surely the best in terms of the quality of the oil obtained, but they lead to neutral oil loss and higher energy consumption respectively, necessitating the urge to find processes with lower oil losses or energy required, yet giving similar quality oil. These drawbacks are majorly due to the deacidification step, which is a part of the whole refining process. To address this, many researchers and scientists have been working for decades and have found some good alternatives, which carry out decidification in a sustainable and greenway. This article focuses on one such solution i.e., Membrane Assisted Edible Oil Deacidification, which has the potential to be introduced as an alternative for the conventional refining methods.

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Deacidification of Vegetable Oils by Solvent Extraction

Cited by 50 publications

References 36 publications

Highly Efficient Deacidification Process for Camelina sativa Crude Oil by Molecular Distillation

Highly Efficient Deacidification Process for Camelina sativa Crude Oil by Molecular Distillation

Physico-chemical characteristics and nutraceutical distribution of crude palm oil and its fractions

Membrane Assisted Edible Oil Deacidification

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