Extraction of corn germ oil with supercritical CO2 and cosolvents

Marinho, Carolina Messias; Lemos, Caroline Ortega Terra; Arvelos, Sarah; Barrozo, Marcos Antônio de Souza; Hori, Carla Eponina; Watanabe, Eri

doi:10.1007/s13197-019-03923-2

Cited by 17 publications

(8 citation statements)

References 30 publications

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“…Solvent extraction, one of the most common methods, yields crude oil that often requires refining to enhance the quality of the extracted TA B L E 1 Summary of corn oil extraction methods. [15][16][17][18][19] Although mechanical pressing is favored for its simplicity and preservation of natural properties, solvent extraction is often chosen for its higher efficiency, especially in large-scale industrial processes.…”

Section: Processingmentioning

confidence: 99%

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Edible corn oil: A holistic exploration from processing to market dynamics

Boukid,

Rosentrater

2024

Euro J Lipid Sci & Tech

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Corn oil is a major agricultural commodity, and it is a staple in kitchens worldwide. This comprehensive review aims to provide a holistic understanding of corn oil processing, composition, nutritional benefits, properties, and market dynamics. The processing of corn oil poses challenges in achieving optimal extraction efficiency while addressing environmental concerns. Currently, hexane‐extracted corn oil dominates the market, with cold‐pressed corn oil being a niche product. Ongoing efforts within the industry focus on exploring alternative, environmentally friendly extraction methods such as critical CO2 and enzymatic‐assisted extraction. Corn oil is recognized for its rich composition in monounsaturated and polyunsaturated fats, tocopherol content, and potential antioxidant benefits. However, its high omega‐6 fatty acid content, while contributing to its stability, has raised discussions about its potential impact on inflammatory responses when consumed excessively. Due to its high smoke point, corn oil is suitable for high‐temperature cooking without compromising its neutral taste. Yet, its oxidation stability is lower compared to other commercial oils. Relying on oleic‐rich varieties or incorporating antioxidants could help enhance its stability and mitigate potential oxidative concerns. In the future, advancements in processing technologies promise to elevate the nutritional profile of corn oil, aligning it with the evolving preferences of health‐conscious consumers and addressing sustainability concerns.Practical Applications. This review provides crucial insights into the processing, nutritional profile, and market dynamics of corn oil, benefiting researchers and industry professionals. By understanding the challenges and advancements in extraction methods, researchers can develop more sustainable and efficient processes. The detailed analysis of corn oil's composition and functionality provides practical solutions for improving product shelf‐life and quality. This comprehensive review supports the optimization of corn oil production and utilization and aids in positioning corn oil as a competitive and versatile option in the global vegetable oil market.

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Section: Processingmentioning

confidence: 99%

“…[29] An emerging technology is the use of supercritical CO 2 extraction. [17] This method involves adjusting influencing factors in the extraction process using CO 2 in a supercritical state, leading to improved extraction efficiency and better quality corn germ oil.…”

Section: Extractionmentioning

confidence: 99%

Edible corn oil: A holistic exploration from processing to market dynamics

Boukid,

Rosentrater

2024

Euro J Lipid Sci & Tech

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“…The use of co-solvent was found to be advantageous for some raw materials. [70,71] For crambe seed oil, use of propane increased the overall oil yield. The subsequent thermal treatment also increased the stability of oils.…”

Section: Supercritical Carbon Dioxide Extraction Of Oils Rich In Poly...mentioning

confidence: 99%

Supercritical Carbon Dioxide Extraction of Vegetable Oils: Retrospective and Prospects

Dhara

Rani

Chakrabarti

2022

Euro J Lipid Sci & Tech

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Supercritical carbon dioxide (SC-CO 2 ) extraction is projected as one of the most viable alternatives to conventional hexane extraction due to its density-dependent solvent power, low viscosity, moderately high diffusion coefficient, and low-temperature operative conditions. Demands for retention of bioactive compounds in oils like wheat germ oil, rice bran oil, almond oil, etc., are increasing and that can be easily met up by this alternative solvent. Solvent extraction of oils rich in polyunsaturated fatty acid, like flaxseed oil, microbial oil, etc., is highly sensitive. Prolonged heating during removal of solvent often leads to degradation of essential fatty acids. As the phase change is done by changing the pressure, the use of SC-CO 2 overcomes such issues. It is quite evident that degumming, one of the processing steps in refining of vegetable oils, will not be required if SC-CO 2 is used for extraction. Moreover, in some other cases, bioactive compounds will be retained in the de-fatted meal and can be recovered with better purity. All these factors will add to the overall economy. A detailed review of the application of SC-CO 2 for the extraction of vegetable oils-the initial reports, current status, and future prospectsis presented in this paper. Practical applications:In recent years, the oils and fats industry has gone through several technological advancements and the most important of them was shifting to physical refining process from highly polluting chemical process. The industry may see another major change in the extraction process in the near future. Hexane has been enlisted as a hazardous air pollutant as per the Clean Air Act, 1990. Recent reports show that hexane may have some role even in ozone layer depletion. Scientists are looking forward to alternatives. SC-CO 2 has emerged as one of the most suitable alternatives. The large capital investment required for the installation of SC-CO 2 -based extraction plants was a major drawback. However, ready availability of critical machineries and advancements in terms of automation has brought down the capital expenditure significantly. The utilization of superior quality by-products generated by the process of SC-CO 2 extraction may be an added advantage for the overall economy of the process.

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“…The solvation characteristics of ScCO 2 can be altered by adding chemical entertainers such as ethanol, acetone, methanol, and isopropanol, which interact with the solute and enhance solubility (Wejnerowska & Ciaciuch, 2018). Marinho et al (2019) reported that extraction of corn germ oil by the addition of co‐solvents (ethanol, hexane, and acetone) to ScCO 2 at 25 Mpa and 60°C facilitated higher yield, with maximum yield using ethanol as cosolvent (13.81%). Nimet et al (2011) investigated the sunflower oil extraction using ScCO 2 and subcritical propane and concluded that under all conditions liquid propane gave higher oil yield at low pressure.…”

Section: Oil Extraction Technologiesmentioning

confidence: 99%

Technologies for extraction of oil from oilseeds and other plant sources in retrospect and prospects: A review

Rani

Sharma

Bala

2021

J Food Process Engineering

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The vegetable oils are obtained from the oilseeds and also from other oil bearing parts of plants like fruits (mesocarp and/or stones), tubers, germs, sprouts, and so on. A host of methods are employed to obtain the oil from different matrices and each method has its own set of advantages and disadvantages. The traditional methods of oil extraction are exhaustive and have low efficacy, while conventional method of mechanical pressing is simple and involves low cost but considered as an inefficient method because of low oil recovery when compared with chemical extraction methods. Due to higher oil recovery and economic gains, chemical methods of oil extraction are preferred globally; however, the chemical solvents used exhibited detrimental effect on the environment, oil quality, and human health, which impelled the development of new technologies. New advanced eco‐friendly techniques namely, enzyme‐assisted extraction, microwave‐assisted extraction, ultrasound‐assisted extraction, and supercritical fluid extraction can easily overcome the shortcomings of the conventional methods and holds the potential to meet the ever‐increasing demand of edible oils. Practical applications Limited land availability and growing demands for vegetable oils call for the development of improved cultivars for harnessing higher yields as well as more efficient oil extraction technologies to augment oil recovery from different oilseed crops without compromising with the oil quality. Widely practiced traditional and conventional methods of extraction have various disadvantages namely, use of solvents, protractive protocols, and have adverse effects on environment, oil quality, and human health. Therefore, in order to overcome the demerits associated with the existing methods, green extraction technologies have been developed as an alternative, which offer various advantages like less extraction time, high extraction yields, and quality and minimized solvent consumption. The information compiled in this review on various extraction technologies will help oilseed processors and researchers in choosing the most appropriate method of oil extraction in order to achieve high yields without compromising the inherent quality of oil.

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Extraction of corn germ oil with supercritical CO2 and cosolvents

Cited by 17 publications

References 30 publications

Edible corn oil: A holistic exploration from processing to market dynamics

Edible corn oil: A holistic exploration from processing to market dynamics

Supercritical Carbon Dioxide Extraction of Vegetable Oils: Retrospective and Prospects

Technologies for extraction of oil from oilseeds and other plant sources in retrospect and prospects: A review

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