Optimizations and comparison of two supercritical extractions of adlay oil

Hu, Aijun; Zhang, Zhihua; Zheng, Jie; Wang, Yiming; Chen, Qiongxi; Liu, Rong; Xue, Liu; Zhang, Shujing

doi:10.1016/j.ifset.2011.10.002

Cited by 25 publications

(17 citation statements)

References 16 publications

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“…Supercritical fluid extraction (SFE) is an attractive clean alternative to organic solvents and an environmentally friendly technology for food and pharmaceutical product extraction using green solvents . Carbon dioxide (CO 2 ) is the most commonly used supercritical fluid due to lack of toxicity and flammability and low cost . Some studies have reported on the good yields of lipids extraction from plant material using supercritical fluids .…”

Section: Introductionmentioning

confidence: 99%

Green extraction of oil from Carum carvi seeds using bio‐based solvent and supercritical fluid: Evaluation of its antioxidant and anti‐inflammatory activities

Bourgou

Rebey

Dakhlaoui

et al. 2019

Phytochemical Analysis

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Introduction The consumption of health‐promoting products such as oil seeds may improve human health and prevent certain diseases. Carvi seeds have the potential to produce oil with nutritional and functional properties rich in active compounds. Objective To extract bioactive lipids from Carum carvi seeds using green methodologies. Material and methods Supercritical‐carbon dioxide (Sc‐CO2) and ethanol as co‐solvent and bio‐based solvent 2‐methyltetrahydrofuran (MeTHF) were used to extract the oil from Carum carvi. The yield, the chemical composition, as well as antioxidant and anti‐inflammatory activities of green extracted oils were investigated and compared to those obtained with conventional methods (hexane and Folch system). Results MeTHF extraction gave higher oil yield than that obtained by hexane. Fatty acids composition of the two obtained green extracted oils was similar to conventional extracted ones where petroselinic (39–43%), linoleic (29–31%) and oleic (19–21%) acids were the major compounds. Furthermore, MeTHF and Sc‐CO2 green extracted oils were enriched of bioactive compounds including sterols (5.4 and 7.3 mg/g oil) and total polyphenols (9.3 and 7.6 mg GAE/g oil) which were correlated to enhanced antiradical capacity. Moreover, the green extracted oils exhibited high anti‐inflammatory capacity inhibiting nitric oxide (NO) release in lipopolysaccharide (LPS)‐induced RAW 264.7 macrophages with IC50 values of 28 and 24 μg/mL. Conclusion Green solvents are a good alternative to petroleum solvents to recover oil from carvi seeds with high amount of nutritionally important fatty acids, along with significant antioxidant and anti‐inflammatory potential.

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Section: Introductionmentioning

confidence: 99%

Green extraction of oil from Carum carvi seeds using bio‐based solvent and supercritical fluid: Evaluation of its antioxidant and anti‐inflammatory activities

Bourgou

Rebey

Dakhlaoui

et al. 2019

Phytochemical Analysis

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“…The FA composition and content of the three categories of Coix seed oil are displayed in Table 5. It is seen from Table 5 that the types of FAs were slightly different from those of supercritical extractions [8]. There were not heptadecenoic acid, nonadecanoic acid, nonadecyenoic acid, eicosenoic acid, heneicosanic acid, tricosanoic acid, tetracosanoic acid, and pentacosanoic acid in the study of Hu et al .…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, the results have also proved that the optimal extraction conditions are reasonable. The above results indicated that the extraction time of ASE (not higher than 1h) was significantly lower than that of supercritical fluid extraction (not lower than 2.5h) [8, 11]. The extraction efficiency of acetone for FAs in Coix seed was higher than petroleum ether, and the FAs in the BCS were the most easily extracted among the three types of Coix seed.…”

Section: Resultsmentioning

confidence: 99%

“…Due to its many benefits, it is reasonable to pursue the optimization of the extraction conditions of Coix seed oil. The common extraction techniques, such as Soxhlet extraction [9], microwave extraction [10], sonication extraction [11], and supercritical fluid extraction [8], are time-consuming and/or complex. The extraction yield of FAs from Coix seed is dependent on the following factors: temperature, time, pressure, extraction solvent, particle size, and solid-liquid ratio.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of accelerated solvent extraction of fatty acids from Coix seeds using chemometrics methods

Xing

Fan

Song

et al. 2018

Preprint

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11 This study investigated the optimization of accelerated solvent extraction (ASE) of 12 fatty acids (FAs) from three Coix seeds (small Coix seed, SCS; big Coix seed, BCS; 13 translucent Coix seed, TCS) by chemometrics methods. Partial least-squares 14 regression (PLSR) and backpropagation neural network (BPNN) were applied to build 15 models that reflect the relationship between content of FAs and extraction conditions 16 (temperature, time, and extraction solvent). Genetic algorithms (GAs) and particle 17 swarm optimization (PSO) were utilized to optimize the combination of extraction 18 conditions. The composition of FAs was analysed by gas chromatography-mass 19 spectrometry (GC-MS). The PLSR models could reflect the relationship of FA 20 content in both BCS and SCS and extraction conditions well, while the BPNN model 21 was more suitable for TCS. The optimal extraction conditions for BCS and SCS were 22 obtained by GAs, whereas those of TCS were obtained by PSO. The FA compositions 2 23 of the three Coix seeds exhibited differences. The results show that ASE combined 24 with chemometrics methods can rapidly and effectively obtain the optimal conditions 25 for the extraction of FAs from Coix seed and there are differences in the extraction 26 conditions and compositions of FAs among different varieties of Coix seed, but all the 27 extraction time is shorter than other extractions methods. 28

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“…It is distributed widely in China, Korea, Thailand, Burma and Japan, as well as is planted in most of provinces of China . A number of biological activities components, such as coixenolide , coixin and fructooligosaccharide , have been isolated from Coix seed. Meanwhile, Coix seed is rich in many nutrients .…”

Section: Introductionmentioning

confidence: 99%

The impact of heat‐moisture treatment on the molecular structure and physicochemical properties of Coix seed starches

Liu

et al. 2016

Starch Stärke

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The effects of heat‐moisture treatment on structure and properties of big Coix seed (BCS), translucent Coix seed (TCS), and small Coix seed (SCS) starches were investigated in this study. The amylose contents of BCS, TCS, and SCS starches were 0.63, 24.12, and 0.96%, respectively. After HMT, starches appeared cracks and broken, birefringence weakened and the relative crystallinity and the ratio of 1047 cm−1/1022 cm−1 of HMT starches decreased, owing to disorganization of double helices and disruption of crystalline regions. The gelatinization temperatures of HMT starches increased but the thermal enthalpies decreased. The rheological characteristics had been changed, and HMT starches had the better flowability, especially for TCS starch. HMT increased rapidly digestible starch and resistant starch (RS) levels, and decreased slowly digestible starch levels. The TCS starch had the highest RS content (70.36%). The results show that the HMT has significant impacts on the structural and physicochemical properties of different varieties Coix seed starches but to different extents.

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Optimizations and comparison of two supercritical extractions of adlay oil

Cited by 25 publications

References 16 publications

Green extraction of oil from Carum carvi seeds using bio‐based solvent and supercritical fluid: Evaluation of its antioxidant and anti‐inflammatory activities

Green extraction of oil from Carum carvi seeds using bio‐based solvent and supercritical fluid: Evaluation of its antioxidant and anti‐inflammatory activities

Optimization of accelerated solvent extraction of fatty acids from Coix seeds using chemometrics methods

The impact of heat‐moisture treatment on the molecular structure and physicochemical properties of Coix seed starches

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