Application of response surface methodology to optimise supercritical carbon dioxide extraction of oil from rapeseed (<i>Brassica napus</i>L.)

Yu, Jing; Wang, Jing; Liu, Zhiqiang; Wang, Qiang

doi:10.1111/j.1365-2621.2012.02948.x

Cited by 26 publications

(9 citation statements)

References 25 publications

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“…Three independent variables, X 1 -solvent concentration, X 2 -extraction temperature, and X 3 -extraction time, were studied, as shown in Table S10. For the three factors, a three-level face-centered cube design was applied, consisting of 15 experimental runs with three replicates at the central point [41,42]. All experiments were conducted in random order to eliminate error due to the extraneous factors.…”

Section: Experimental Designmentioning

confidence: 99%

Phytochemicals of Conocarpus spp. as a Natural and Safe Source of Phenolic Compounds and Antioxidants

et al. 2021

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Optimization of the extraction conditions of polyphenolic compounds for different parts of the Damas species, Conocarpus lancifolius and Conocarpus erectus, grown under UAE conditions was studied. The combination of ethanol concentration (50, 75, and 100%), temperature (45, 55, and 65 °C) and time (1, 2, and 3 h) was used by applying the Response Surface Methodology. The data showed that the extracts (n = 90) contained phenolic compounds, flavonoids, and tannins, and were free of alkaloids. Changing the extraction conditions had a significant effect on the detection of phytosterols, saponins, and glycosides and on the solubility of vanillic acid, p-coumaric acid, sinapic acid, t-ferulic acid, rutin hydrate, protocatechuic acid, quercetin, and flavone. The data reveal that the roots and leaves of C. erectus and the leaves and fruits of C.lancifolius are the most important plant parts from which to extract these compounds. This study draws attention to the unordinary use of Conocarpus spp. as a source of natural food additive.

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Section: Experimental Designmentioning

confidence: 99%

Phytochemicals of Conocarpus spp. as a Natural and Safe Source of Phenolic Compounds and Antioxidants

et al. 2021

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“…Optimization of extraction conditions of phenolic compound, flavonoids and crude fiber from date seeds powder were carried out using a central composite design (CCD) and response surface methodology (RSM), according to Montgomery (2001, 2002). A four factors and a three level face centered cube design consisting of twentynine experimental runs were conducted with five replicates at the central point (Jing et al 2012). The orders of all experiments were performed randomly to minimize error, due to extraneous factors.…”

Section: Experimental Designmentioning

confidence: 99%

Optimizing extraction conditions of crude fiber, phenolic compounds, flavonoids and antioxidant activity of date seed powder

2017

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The objective of this study was to optimize the extraction conditions of crude fiber, phenolic compounds, flavonoids, and antioxidant activity from date seeds powder, using Response Surface Methodology. A central composite design with four independent variables; concentration of ethanol (X = 25, 50 and 75% v/v), solvent: sample ratio (X = 40:1, 50:1 and 60:1 v/w), temperature (X = 45, 55 and 65 °C), and extraction time (X = 1, 2 and 3 h) and a three level face centered cube design were used. A total of twenty nine experimental runs with five replicates at the central point were used to study the response variables using two extraction cycles. Maximum phenolic compound content (71.6 mg GAE/100 g) was extracted using 50% ethanol solution with 40:1 solvent: sample ratio for 1 h at 55 °C. While the maximum antioxidant activity (55.02 µmol Fe(II)/g) was obtained using similar ethanol concentration and solvent: sample ratio except at lower temperature (45 °C) for 2 h. On other hand, the maximum flavonoids content (455.77 mg CEQ/100 g) was reached by using 50% concentration, 50:1 solvent: sample ratio at 65 °C for 3 h. In contrast, the content of fiber was not affected by the different extraction conditions. Results indicate that using combination of extracted conditions, have a great potential for extracting all depending compounds except crude fiber.

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“…The quality of the model's fit can be defined by the coefficient of determination (R 2 ), adjusted R 2 , predicted R 2 , coefficient of variation (CV), adequate precision (AP) and prediction error sum of squares (PRESS) (Bezerra et al, 2008;Golalikhani et al, 2014;Rouhi et al, 2017). The high value of R 2 (0.9730) indicated a good relationship between the observed and predicted data and implied that 97.30% of the variations could be predicted by the fitted model (Yu et al, 2012). The nearer the value of R 2 is to 1, the better the proposed model fits the actual data (Suhag & Nanda, 2015).…”

Section: Response Surface Methodologymentioning

confidence: 99%

Optimisation of experimental conditions for binding of divalent iron to bioactive casein phosphopeptides

Delshadian

Mortazavian

Tabarzad

et al. 2017

Int J of Food Sci Tech

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Summary Casein phosphopeptides (CPPs) are mineral‐binding bioactive peptides derived from enzymatic digestion of casein. They have been shown to increase iron bioavailability due to increasing iron solubility at the alkaline pH of the intestine. Thus, they are potentially applicable as an advantageous preparation for iron fortification of food. This study aimed to characterise a commercially available CPP and determines optimum experimental conditions for binding it with ferrous iron. The effect of three variables – pH (5–7.5), mass ratio of iron to CPP (MR) (0.04–0.16) and holding time (40–80 min) – on the CPP's iron content was investigated using the central composite design (CCD) in response surface methodology (RSM), and a quadratic model was developed. The optimisation in this survey was based on the maximum response. Among all the regression's terms, the main and quadratic effects of pH represented the most significant influences on the iron content (P‐value <0.05). The obtained optimum conditions were as follows: pH 6.5, MR 0.14 and holding time 72 min, resulting in binding 68.66 mg iron per gram of the CPP. The quantity of iron bound to the CPP depended considerably on the experimental conditions and proved the importance of optimisation.

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Application of response surface methodology to optimise supercritical carbon dioxide extraction of oil from rapeseed (Brassica napusL.)

Cited by 26 publications

References 25 publications

Phytochemicals of Conocarpus spp. as a Natural and Safe Source of Phenolic Compounds and Antioxidants

Phytochemicals of Conocarpus spp. as a Natural and Safe Source of Phenolic Compounds and Antioxidants

Optimizing extraction conditions of crude fiber, phenolic compounds, flavonoids and antioxidant activity of date seed powder

Optimisation of experimental conditions for binding of divalent iron to bioactive casein phosphopeptides

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