Extraction of Fenugreek  (Trigonella foenum-graceum L.) Seed Oil Using Subcritical Butane: Characterization and  Process Optimization

Chen

et al. 2018

Journal of Chemistry

The mass transfer process of soybean oil extracted by AOT reverse micelle was determined. Meanwhile, the physicochemical properties of oil and structural properties of protein were also investigated by gas chromatography (GC), Fourier infrared spectrum (FTIR), and amino acid analyzer. The results indicated that the mass transfer model can be set up as 1 + 2(1 − ) − 3(1 − ) 2/3 = 0.248 • exp(−720.8/ ) • . The reaction probably belongs to internal diffusion. The oil extracted by AOT reverse micelle was in better quality according to physicochemical analysis. The soybean protein almost retained its original structure in AOT reverse micelle by FTIR and amino acid analysis. Therefore, AOT reverse micelle is an attractive procedure for extracting oil and protein simultaneously.

Section: Extraction Time Andsupporting

confidence: 62%

Section: Particle Sizementioning

confidence: 99%

Kinetics and Characteristics of Soybean Oil and Protein Extracted by AOT Reverse Micelle Technology

Chen

et al. 2018

Journal of Chemistry

Euro J Lipid Sci & Tech

“…Now, eager attentions have been threw into these two burgeoning techniques due to that they are feasible means especially for food and pharmaceutical industries. They are cheap, efficiency, harmfulless, environmentally friendly, and no solvent traces remain in the extracted oil products as solvent (CO 2 , butane, or propane) can be easily removed from the product by depressurization . Besides, the oils obtained by supercritical and subcritical extractions are of outstanding quality and the extraction yields are comparable with those conventional methods …”

Section: Introductionmentioning

confidence: 99%

Chemical Characterization, Oxidative Stability, and In Vitro Antioxidant Capacity of Sesame Oils Extracted by Supercritical and Subcritical Techniques and Conventional Methods: A Comparative Study Using Chemometrics

Shi

Zheng

Liu

et al. 2017

In this study, profiles of chemical characterization, oxidative stability, and in vitro antioxidant capacity of sesame oils obtained from supercritical and subcritical techniques and conventional methods are studied and compared. The results shows that a large proportion of fatty acid and triacylglycerol are not significantly influenced by the processing technologies (except for LLLn, SOA, C18:3n‐6, and C22:0). However, significant differences of minor component, oxidation stability, and free radical scavenging activity among the test oil samples are observed. Supercritical sesame oils are more excellent than the subcritical sesame oils and oils obtained from the traditional methods, especially in terms of γ‐tocopherol, lignan and polyphenol contents, and antioxidant capacity, thus indicating that CO2 fluid technology is a desirable alternative to extract sesame oils with rich nutrition and superb physiological activity. Further, oils obtained from roasted sesame seeds exhibited higher oxidative stability and antioxidant capacity, thus declaring that high temperature roasting was a critical issue that influenced the quality of the final sesame oil product. Practical Applications: This study used two burgeoning technologies, namely supercritical and subcritical techniques for the practical applications of the extraction process of sesame oils from sesame (Sesamum indicum, L.) seeds. Supercritical fluid was an excellent technology to selectively extract bioactive compounds from sesame by using CO2 as a carrier solvent. The use of CO2 supercritical fluid in the present study was associated with high efficiency and antioxidant activities of the obtained sesame oils. These results indicate that this technology was an efficient and rapid method for extracting phytochemicals when compared with the conventional methods (hot pressing, cold pressing, solvent extraction, and aqueous extraction), thus indicating that it had the potential to work as a satisfactory approach to produce specific sesame oil products for health care and cosmetic use. This method can be easily implemented on an industrial scale. In this study, profiles of chemical characterization, oxidative stability, and in vitro antioxidant capacity of sesame oils obtained from supercritical and subcritical techniques and conventional methods are studied and compared. PCA and HCA show apparent distinctions between the supercritical sesame oils and the other kinds, as well as between the roasted and unroasted sesame oils. Models deduced by MLR are all significant, which are recognized as satisfactory and acceptable for predicting the in vitro antioxidant abilities of the sesame oils.

Food Science & Nutrition

“…Oleic acid is an important monounsaturated fatty acid (MUFA) which exerts important effect on the prevention and treatment of cardiovascular diseases (Gu, Liu‐X, Liu‐H, Pang, & Qin, ). Next in much were linoleic acid (C18:2; 19.22%–19.66%) and linolenic acid (C18:3; 7.81%–8.00%), which were essential 18‐carbon unsaturated fatty acid (UFA).…”

Section: Resultsmentioning

confidence: 99%

“…which exerts important effect on the prevention and treatment of cardiovascular diseases (Gu, Liu-X, Liu-H, Pang, & Qin, 2017).…”

Section: Fatty Acid Composition Of Oils Extracted By Different Methodsmentioning

confidence: 99%

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

Guo

Wan

Huang

2019

The optimal extraction conditions of rapeseed cake oil using subcritical R134a/butane were established by response surface methodology. The quality of subcritical R134a/butane extraction oil (SRBEO) was compared with supercritical CO2 extraction oil (SCO2EO) and hexane extraction oil (HXEO). The results showed the highest extraction yield obtained by subcritical R134a/butane in the condition of R134a‐butane ratio of 1.5 kg/kg, at 45°C for 50 min. Compared with SCO2EO and HXEO, the extraction yield and β‐carotene content of SRBEO (87.76%, 357.21 μg/100g) were the highest. The content of phospholipids and canolol in SRBEO (3.01 mg/g, 118.51 mg/100 g) was higher than SCO2EO (not detected, 95.82 mg/100 g) and less than HXEO (25.78 mg/g, 131.85 mg/100 g). The tocopherols in SRBEO were equivalent to SCO2EO but phytosterol content of SRBEO (560.19 mg/100 g) was less than SCO2EO (591.40 mg/100 g). For fatty acids, the three extraction oils had slight difference. Thus, subcritical R134a/butane extraction appeared to be feasible for rapeseed cake oil extraction.