Extraction of rapeseed cake oil using subcritical R134a/butane: Process optimization and quality evaluation

Guo, Tingting; Wan, Cao; Huang, Fenghong

doi:10.1002/fsn3.1209

Cited by 17 publications

(12 citation statements)

References 41 publications

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“…Phytosterols are the principal constituent of unsaponifiable matter, which can reduce the level of plasma cholesterols and the incidence of heart disease and cancer 33 . Table 4 shows that four types of phytosterols were identified from the flaxseed oils extracted with three different methods.…”

Section: Content Of Carotenoid and Phytosterolsmentioning

confidence: 99%

Extraction and Characterization of Flaxseed Oil Obtained with Subcritical <i>n</i>-Butane

Wang

Zhang

et al. 2020

J. Oleo Sci.

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IntroductionFlaxseed Linum usitatissimum L. is a potential oilseed crop and widely planted in China, North America, Ethiopia and India. Flaxseed contains 30-40 of oil 1 . It has been reported that daily intake of flaxseed oil can reduce the risk of colon tumors, mammary cancer, atherosclerosis, etc. 2 . The efficacy of flaxseed oil is mainly attributed to the richness in unsaturated fatty acids, especially α-linolenic acid ALA 18:3, n-3 , which accounts for 40-68 3 . The consumption of flaxseed oil helps to balance the proportion of n-3 and n-6 fatty acids in the human diet 4 . Flaxseed oil has been considered a healthy oil for its nutritional and pharmaceutical value.Mechanical pressing and organic solvent extraction are the two most common methods for vegetable oil production. However, organic solvent extraction is unacceptable on account of the inevitable residual solvent that is harmful to human health 5 . While mechanical pressing is high energy consumption and low extraction rate 6 . Supercritical CO 2 extraction seems to be an innovative and acceptable method because it is non-toxic, organic solvents-free, and allows more selectivity for target production. However, it is suffering from some serious problems such as high operating pressure, high cost of instrument, and limited production capacity 7 . Compared with supercritical CO 2 extraction, subcritical fluid extraction has advantages of mild

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Section: Content Of Carotenoid and Phytosterolsmentioning

confidence: 99%

Extraction and Characterization of Flaxseed Oil Obtained with Subcritical <i>n</i>-Butane

Wang

Zhang

et al. 2020

J. Oleo Sci.

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“…Although SUBLDME is wildly used for the extraction of biologically active, lipid, flavoring, or pungent organic compounds in many substances, there are not many studies investigating the effect of the extraction on RBO and phytosterol content. Kamchonemenukool et al [ 101 ] found high phytosterol contents from filter mud discarded from sugar mill extracted using SUBLDME at 20,879 mg/100 g. Guo et al [ 45 ] also reported the phytosterol content of rapeseed cake oil extracted with subcritical 1,1,1,2-tetrafluoroethane (R134a)/butane was 560.19 mg/100 g. Zanqui et al [ 102 ] extracted Brazil nut oil with subcritical n-propane by varying the extraction temperature and pressure, and obtained phytosterol contents ranging from 54.09 to 69.99 mg/100 g. Han et al [ 103 ] also found the phytosterol content of soybean germ oil extracted with subcritical butane at 2772.90 mg/100 g.…”

Section: Resultsmentioning

confidence: 99%

Bioactives from Crude Rice Bran Oils Extracted Using Green Technology

Wongwaiwech

Kamchonemenukool

et al. 2023

Molecules

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Crude rice bran oils from different rice cultivars and extraction methods bear different contents of nutraceuticals. The health benefits of lowering cholesterol activity of rice bran oil being confirmed by many reports are partly attributed to non-nutrient nutraceuticals, especially γ-oryzanol, phytosterols, and policosanols. As the world has been facing the global warming crisis, green extraction technology is gaining attention from many sectors. The current study aims to compare the nutraceutical composition with respect to γ-oryzanol, phytosterol, and policosanol content as well as the antioxidant properties of crude rice bran oils extracted from white and red rice bran using three green technologies, comparing with conventional hexane extraction. The data show that the traditional solvent extraction gave the highest oil yield percentage (26%), but it was not significantly different from subcritical liquefied dimethyl ether extraction (24.6%). Subcritical liquefied dimethyl ether extraction gave higher oil yield than supercritical CO2 extraction (15.5–16.2%). The crude rice bran oil extracted using subcritical liquefied dimethyl ether extraction produced the highest total phenolic contents and antioxidant activities. The highest γ-oryzanol content of the crude rice bran oil was found in oil extracted by conventional cold press (1370.43 mg/100 g). The γ-oryzanol content of the oil obtained via subcritical liquefied dimethyl ether extraction was high (1213.64 mg/100 g) compared with supercritical CO2 extraction. The red rice bran yielded the crude rice bran oil with the highest total phytosterol content compared with the white bran, and the oil from red rice bran extracted with subcritical liquefied dimethyl ether generated the highest total phytosterol content (1784.17 mg/100 g). The highest policosanol content (274.40 mg/100 g) was also found in oil obtained via subcritical liquefied dimethyl ether extraction.

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“…Therefore, especially oils from regionally produced raw materials are hard to be expected. Nevertheless, the pre‐treatment of rapeseed and the method by which rapeseed oil is extracted from the press cake can influence its quality (Guo et al., 2019; Yu et al., 2020; Zhou et al., 2019). There were indications that the pre‐treatment of rapeseed by steam explosion led to a better oil quality as compared to the traditional high‐temperature roasting (Yu et al., 2020).…”

Section: Discussionmentioning

confidence: 99%

“…There were indications that the pre‐treatment of rapeseed by steam explosion led to a better oil quality as compared to the traditional high‐temperature roasting (Yu et al., 2020). In addition, it was shown that the use of butane as an extraction agent increased the extracted oil yield and the concentrations of ß‐carotene, tocopherol, and canolol in the oil and slightly reduced the erucic acid concentrations (Guo et al., 2019).…”

Section: Discussionmentioning

confidence: 99%

Erucic acid concentration of rapeseed (Brassica napus L.) oils on the German food retail market

Russo

Yan

Stier

et al. 2021

Food Science & Nutrition

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Rapeseed oil is one of the most important vegetable oils in Germany. It has a favorable fatty acid composition but also contains a certain amount of erucic acid (EA). As the result of toxicological considerations regarding this fatty acid, the European Food Safety Authority (EFSA) established a tolerable daily intake (TDI) for EA of 7 mg/kg body weight in 2016. On this basis, the maximum EA levels for vegetable oils allowed in the European Union have been reduced shortly from 50 to 20 g/kg, and for infant formula and follow‐on formula from 10 to 4 g/kg. However, rapeseed oil is also recommended for the preparation of homemade food for infants and children. Little is known about the actual EA concentrations of rapeseed oils on the German retail market. Current data are especially important for the necessary reassessment of its recommendation in infant and child nutrition based on the established TDI. Three hundred representative rapeseed oil samples were purchased in retail stores across Germany. EA concentrations, determined by GC‐FID, were in a range of 0.17–9.68 g/kg, with 241 samples being even below 4 g/kg. All oils were below the maximum level valid at the time of this investigation, and even below the newly established lower maximum level of 20 g/kg. The major part also met the requirements for infant and follow‐on formula. The representative results provide valuable current data for the necessary reassessment of the dietary recommendations for infant and child nutrition based on the established TDI.

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Extraction of rapeseed cake oil using subcritical R134a/butane: Process optimization and quality evaluation

Cited by 17 publications

References 41 publications

Extraction and Characterization of Flaxseed Oil Obtained with Subcritical <i>n</i>-Butane

Extraction and Characterization of Flaxseed Oil Obtained with Subcritical <i>n</i>-Butane

Bioactives from Crude Rice Bran Oils Extracted Using Green Technology

Erucic acid concentration of rapeseed (Brassica napus L.) oils on the German food retail market

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