Recent advances in green soybean oil extraction: A review

Gasparetto, Henrique; Castilhos, Fernanda de; Salau, Nina Paula Gonçalves

doi:10.1016/j.molliq.2022.119684

Cited by 23 publications

(17 citation statements)

References 117 publications

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“…For the following steps, EM was selected as the best mixture to defat soybean as it presents similar yields compared to the other options and their components showed lower toxicity ( 57 – 60 ). Gasparetto et al highlighted green alternatives to extract soybean oil ( 61 ). Solvents, such as terpenes, cyclopentyl methyl ether (CPME), and 2-MeTHF, have been applied as suitable replacers for hexane.…”

Section: Resultsmentioning

confidence: 99%

Pressurized natural deep eutectic solvents: An alternative approach to agro-soy by-products

et al. 2022

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Soybeans are mainly used for food and biodiesel production. It is estimated that soy crops worldwide will leave about 651 million metric tons of branches, leaves, pods, and roots on the ground post-harvesting in 2022/23. These by-products might serve as largely available and cheap source of high added-value metabolites, such as flavonoids, isoflavonoids, and other phenolic compounds. This work aimed to explore green approaches based on the use of pressurized and gas expanded-liquid extraction combined with natural deep eutectic solvents (NADESs) to achieve phenolic-rich extracts from soy by-products. The total phenolic and flavonoid contents of the generated extracts were quantified and compared with conventional solvents and techniques. Pressurized liquid extraction (PLE) with choline chloride/citric acid/water (1:1:11 – molar ratio) at 120°C, 100 bar, and 20 min, resulted in an optimized condition to generate phenolic and flavonoid-rich fractions of soy by-products. The individual parts of soy were extracted under these conditions, with their metabolic profile obtained by UHPLC-ESI-QToF-MS/MS and potential antioxidant properties by ROS scavenging capacity. Extracts of soy roots presented the highest antioxidant capacity (207.48 ± 40.23 mg AA/g), three times higher than soybean extracts (68.96 ± 12.30). Furthermore, Hansen solubility parameters (HSPs) were applied to select natural hydrophobic deep eutectic solvents (NaHDES) as substituents for n-heptane to defat soybeans. Extractions applying NaHDES candidates achieved a similar yield and chromatography profile (GC-QToF-MS) to n-heptane extracts.

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Section: Resultsmentioning

confidence: 99%

Pressurized natural deep eutectic solvents: An alternative approach to agro-soy by-products

et al. 2022

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“…8 It is produced at a rate of approximately 6 wt % of the degummed soybean oil and thus is considered the most abundant and cheapest byproduct of the soybean oil production process. 9 This article is licensed under CC-BY-NC-ND 4.0 T h i s c o n t e n t i s Soybean soapstock is primarily composed of free fatty acids, unsaponifiable compounds, hydrolyzed phosphatide, neutral oil, etc. 10 Soybean soapstock after being mixed and stirred with strong sulfuric acids and high-temperature water steam carried out an acidification reaction to form the high-acid oil.…”

Section: Introductionmentioning

confidence: 99%

“…Instead, soybean soapstock is the residual left after the oil squeeze process from the alkaline neutralization of the degummed soybean oil . It is produced at a rate of approximately 6 wt % of the degummed soybean oil and thus is considered the most abundant and cheapest byproduct of the soybean oil production process …”

Section: Introductionmentioning

confidence: 99%

Engine Performance of High-Acid Oil-Biodiesel through Supercritical Transesterification

Lin,

Lin

2024

ACS Omega

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Relatively cheaper high-acid oil was used to make biodiesel through supercritical methanol transesterification, where high FFA contents in feedstock might conversely enhance the reaction extent. A direct-injection diesel engine and a dynamometer were used to analyze the engine characteristics of the high-acid oilbiodiesel. The experimental results show that the biodiesel made in this study had adequate fuel properties. This present biodiesel from high-acid oil was found to bear a lower heating value and equivalence ratio, with higher exhaust gas temperature, brake-specific fuel consumption (bsfc), and excess air ratio, than super-low sulfur diesel (SLSD). The biodiesel appeared to have larger-sized carbon residue left after the burning process in comparison with that of SLSD. The higher engine speed resulted in higher exhaust gas temperature and equivalence ratio, while lower bsfc, excess air ratio, was observed for the biodiesel. Supercritical methanol transesterification has been successfully proven to convert those low-cost feedstocks to renewable biodiesel products which own competitive engine performance in this study.

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“…360,000 thousand metric tons. 33 Specifically, Argentina is one of the largest exporters of soybean oil (5.6 Â 10 6 Kg in 2021) and produces a large amount of sunflower oil (1.8 Â 10 6 Kg in 2022). 34,35 The starting materials (vegetable seeds) are sustainable and available on the scale required.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, according to Gasparetto et al, the soybeans worldwide production in 2021 was c.a. 360,000 thousand metric tons 33 . Specifically, Argentina is one of the largest exporters of soybean oil (5.6 × 10 6 Kg in 2021) and produces a large amount of sunflower oil (1.8 × 10 6 Kg in 2022) 34,35 .…”

Section: Introductionmentioning

confidence: 99%

The effect of oil raw material composition in the synthesis of bio‐sorbents based on inverse vulcanization on the ability to remediate hydrocarbon‐contaminated water. A novel method for decontaminating water/fuel emulsions

Farioli,

Martinez,

Barbero

et al. 2023

J of Applied Polymer Sci

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Solid crosslinked biopolymers made by inverse vulcanization of soybean (PSB) or sunflower (PSF) oil with sulfur are characterized and tested to decontaminate water from hydrocarbons (HC): gasoline, diesel, two lubricant oils, and water/gasoline emulsion. The physicochemical structure of the biopolymers is studied by FTIR spectroscopy, Differential scanning calorimetry, contact angle measurement, and mechanical testing. Also, the morphological structure is analyzed by scanning electron microscopy. Moreover, the polymer decontamination capability and reusability are tested gravimetrically. Both biopolymers are formed by CS bonds, and their elastic behavior dominates. However, PSF is more hydrophilic, has a larger amount of free sulfur and a less compact structure, and also sorbs ca. 60% more HC than PSB. The results indicate that the unsaturated feedstock has a strong effect on the polymer structure and the capacity to remediate contaminated water or solids. Also, both materials can be reused to remediate water for more than five consecutive cycles. In addition, inverse vulcanization of oils and sulfur is an ecological way of obtaining environmentally‐improved materials with great potential and applications, providing a complete atomic economy and high performance to remediate water from water/HCs dispersed and, more importantly, from water/gasoline emulsions.

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Recent advances in green soybean oil extraction: A review

Cited by 23 publications

References 117 publications

Pressurized natural deep eutectic solvents: An alternative approach to agro-soy by-products

Pressurized natural deep eutectic solvents: An alternative approach to agro-soy by-products

Engine Performance of High-Acid Oil-Biodiesel through Supercritical Transesterification

The effect of oil raw material composition in the synthesis of bio‐sorbents based on inverse vulcanization on the ability to remediate hydrocarbon‐contaminated water. A novel method for decontaminating water/fuel emulsions

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