Optimization of supercritical carbon dioxide extraction of sea buckthorn (Hippophaë thamnoides L.) oil using response surface methodology

Xu, Xiaofeng; Gao, Yanxiang; Liu, Guangmin; Wang, Qi; Zhao, Jian

doi:10.1016/j.lwt.2007.08.002

Cited by 115 publications

(76 citation statements)

References 29 publications

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“…Interestingly, a significant negative interaction between extraction time and temperature was obtained for the response of ABTS •+ inhibition, which may be attributed by decomposition of antioxidative compounds upon longer extraction time and higher temperature (Silva et al 2007). According to practical cost-saving considerations, Xu et al (2008) stated that the point representing possible combination of the lowest levels of factors within the optimum zone would be preferred over other combinations. It was important to obtain the highest inhibition of ABTS •+ extracted under moderate time (about 180 min) and temperature (40-42°C).…”

Section: Response Surface Analysis Of Abts •+ Inhibition Activitymentioning

confidence: 99%

Optimization of extraction time and temperature on antioxidant activity of Schizophyllum commune aqueous extract using response surface methodology

Yim

Chye²,

Rao

et al. 2011

J Food Sci Technol

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Central composite design of response surface methodology (RSM) was employed to optimize the extraction time (X 1 : 99.5-290.5 min) and temperature (X 2 : 30.1-54.9°C) of Schizophyllum commune aqueous extract with high antioxidant activities and total phenolic content (TPC). Results indicated that the data were adequately fitted into four second-order polynomial models. The extraction time and temperature were found to have significant linear, quadratic and interaction effects on antioxidant activities and TPC. The optimal extraction time and temperature were: 290.5 min and 35.7°C (DPPH • scavenging ability); 180.7 min and 41.7°C (ABTS •+ inhibition ability); 185.2 min and 42.4°C (ferric reducing antioxidant power, FRAP); 290.5 min and 40.3°C (TPC). These optimum conditions yielded 85.10%; 94.31%; 0.74 mM Fe 2+ equivalent/100 g; 635.76 mg gallic acid equivalent/100 g, respectively. The yields of antioxidant activities and TPC obtained experimentally were close to its predicted values. The establishment of such model provides a good experimental basis employing RSM for optimizing the extraction time and temperature on antioxidants from S. commune aqueous extract.

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Section: Response Surface Analysis Of Abts •+ Inhibition Activitymentioning

confidence: 99%

Optimization of extraction time and temperature on antioxidant activity of Schizophyllum commune aqueous extract using response surface methodology

Yim

Chye²,

Rao

et al. 2011

J Food Sci Technol

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“…24 The generated response surfaces developed using the fitted quadratic polynomial equation obtained from regression analysis are shown in Figs. 7-9.…”

Section: 23mentioning

confidence: 99%

The application of response surface methodology on the synthesis of grafted polypropylene through the solvothermal route

Zheng¹,

Zhao²,

Zeng³

et al. 2011

Adv Polym Technol

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Solvothermal synthesis is an important technology to prepare the inorganic matter. In this investigation, xylene-water-thermal reaction of polypropylene (PP), styrene (St), and maleic anhydride (MAH) under pressure was carried out to prepare grafting polymers. Infrared (IR) spectra and NMR spectra confirmed that MAH and St were successfully grafted onto the PP backbones. Through differential scanning calorimetry (DSC) and X-ray analysis,

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“…This was most likely due to the improvement of oil solubility resulted from the increased CO 2 density with the rise of pressure (X. Xu et al, 2007). When the extraction pressure was over about 41MPa, there was a little decrease on the yield of flaxseed oil.…”

Section: Analysis Of Response Surfacementioning

confidence: 99%

“…and oil-free meal for livestock (C. Supercritical fluid extraction (SFE) has attracted considerable attention in recent several decades as a promising alternative to conventional solvent extraction and mechanical pressing for extracting oils and other materials (X. Xu et al, 2007). SFE has been widely used since it enables the recovery of valuable food ingredients from natural matrices with high yield and the production of better quality products with improved functional or nutritional characteristics by operating under a wide range of conditions.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Supercritical Carbon Dioxide Extraction of Flaxseed Oil Using Response Surface Methodology

Jiao¹,

Liu²,

Huang³

et al. 2008

International Journal of Food Engineering

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The optimal conditions for the supercritical carbon dioxide (SC-CO 2 ) extraction of flaxseed oil from flaxseed were determined using response surface methodology (RSM). A second-order regression for rotation-orthogonal composite design was used to study the effects of three independent variables: extraction pressure (MPa), extraction temperature and CO 2 flow rate of 31 L/h according to the analysis of response surface. In this condition, the experimental yield of flaxseed oil was 29.96%, which was close to the predicted value of 30.52%.

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Optimization of supercritical carbon dioxide extraction of sea buckthorn (Hippophaë thamnoides L.) oil using response surface methodology

Cited by 115 publications

References 29 publications

Optimization of extraction time and temperature on antioxidant activity of Schizophyllum commune aqueous extract using response surface methodology

Optimization of extraction time and temperature on antioxidant activity of Schizophyllum commune aqueous extract using response surface methodology

The application of response surface methodology on the synthesis of grafted polypropylene through the solvothermal route

Optimization of Supercritical Carbon Dioxide Extraction of Flaxseed Oil Using Response Surface Methodology

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