Optimization of extraction of phenolic compounds from wheat using response surface methodology

Liyana-Pathirana, Chandrika M.; Shahidi, Fereidoon

doi:10.1016/j.foodchem.2004.08.050

Cited by 673 publications

(414 citation statements)

References 24 publications

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“…Antioxidant power, measured by DPPH free-radical scavenging potential, showed a decreasing trend with increasing temperature, which might be due to the occurrence of well known degradative phenomena (Casazza et al, 2012). Our results are in accordance with those of studies by Cacace and Mazza (2003a), Liyanapathirana and Shahidi (2005), and Pinelo et al (2005), in which the polyphenol yield increased with increasing temperature. However, some flavonoid families are thermosensitive (Cacace and Mazza, 2003a).…”

Section: Effects Of Temperature On Eap Eaf and Antioxidant Potentialsupporting

confidence: 91%

Optimization of extraction of phenolics from leaves of Ficus virens

Chen

Chai

et al. 2013

J. Zhejiang Univ. Sci. B

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Abstract:In this research, the conditions for extraction of phenolics from leaves of Ficus virens were optimized using response surface methodology (RSM). The extraction abilities of phenolics (EAP) and flavonoids (EAF), the 2,2-diphenyl-1-pierylhydrazyl (DPPH) free-radical scavenging potential, and the ferric reducing/antioxidant power (FRAP) were used as quality indicators. The results of single-factor experiments showed that temperature, ethanol concentration, extraction time, and the number of extraction cycles were the main influencing variables, and these provided key information for the central composite design. The results of RSM fitted well to a second degree polynomial model and more than 98% of the variability was explained. The ideal extraction conditions for EAP, EAF, DPPH free-radical scavenging potential, and FRAP were obtained. Considering the four quality indicators overall, the ideal extraction conditions were 58% ethanol at 57 °C for 37 min with three extraction cycles. At the ideal extraction conditions, the values of EAP, EAF, DPPH free-radical scavenging potential, and FRAP were 5.72%, 3.09%, 58.88 mg ascorbic acid equivalent (AAE)/g dry weight (DW), and 15.86 mg AAE/g DW, respectively. In addition, linear correlations were observed between EAP, EAF, and antioxidant potential.

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Section: Effects Of Temperature On Eap Eaf and Antioxidant Potentialsupporting

confidence: 91%

Optimization of extraction of phenolics from leaves of Ficus virens

Chen

Chai

et al. 2013

J. Zhejiang Univ. Sci. B

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“…RSM is a collection of statistical and mathematical techniques that has been successfully used to evaluate the effects of several process variables and their interactions [Liyana-Pathirana and Shahidi 2005]. In single-factor experiments for the recovery of 6-gingerol, proper ranges of ratio of liquid to solid (10:1, 15:1, 20:1, 25:1, 30:1, 35:1, mL·g -1 ), ethanol proportion (50, 60, 70, 80, 90, 100% v/v), microwave power (200, 300, 400, 500, 600, 700 W), extraction time (10, 20, 30, 40, 50, 60, 70 s) were determined.…”

Section: Experimental Designmentioning

confidence: 99%

Optimized microwave-assisted extraction of 6-gingerol from Zingiber officinale Roscoeand evaluation of antioxidant activity in vitro

Liu¹,

Zhou²,

Zhao³

et al. 2014

Acta Sci Pol Technol Aliment

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Background. 6-Gingerol is one of the most pharmacologically active and abundant components in ginger, which has a wide array of biochemical and pharmacologic activities. In recent years, the application of microwave-assi sted extraction (MAE) for obtaining bioactive compounds from plant materials has shown tremendous research interest and potential. In this study, an effi cient microwave-assisted extraction (MAE) technique was developed to extract 6-gingerol from ginger. The extraction effi ciency of MAE was also compared with conventional extraction techniques. Material and methods. Fresh gingers (Zingiber officinale Rosc.) were harvested at commercial maturity (originally from Shandong, laiwu, China). In single-factor experiments for the recovery of 6-gingerol, proper ranges of ratio of liquid to solid, ethanol proportion, microwave power, extraction time were determined. Based on the values obtained in single-factor experiments, a Box-Behnken design (BBD) was applied to determine the best combination of extraction variables on the yield of 6-gingerol. Results. The optimum extraction conditions were as follows: mi crowave power 528 W, ratio of liquid to solid 26 mL·g -1 , extraction time 31 s and ethanol proportion 78%. Furthermore, more 6-gingerol and total polyphenols contents were extracted by MAE than conventional methods including Maceration (MAC), Stirring Extraction (SE), Heat reflux extraction (HRE), Ultrasound-assisted extraction (UAE), as well as the antioxidant capacity. Conclusion. Microwave-assisted extraction showed obvious advantages in terms of high extraction efficiency and antioxidant activity of extract within shortest extraction time. Scanning electron microscopy (SEM) images of ginger powder materials after different extractions were obtained to provide visual evidence of the disruption effect. To our best knowledge, this is the fi rst report about usage of MAE of 6-gingerol extraction from ginger, which could be referenced for the extraction of other active compounds from herbal plants.

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“…Water was used to the evaluation of the allelopathic activity, and the acid-ethanol extraction was made in order to quantify the allelochemicals, with subsequent partitioning with ethyl acetate, resulting in a semi-purified fraction. Since the solubility of the phenolic compounds is partly controlled by the polarity of the solvent, there is an influence of the solvent in the efficiency of the extraction, thus reflecting in a greater or lesser recovery of the phenolic compounds (Liyana-Pathirana and Shahidi, 2005), with the possibility of loss of those compounds depending on the type of extraction (Naczk and Shahidi, 2004). The aqueous extraction simulates the conditions of leaching by rain water, however, the ethanol extraction is more effective to obtain secondary metabolites.…”

Section: Resultsmentioning

confidence: 99%

Allelopathy and Allelochemicals of Eragrostis plana (Poaceae) and its Relation with Phenology and Nitrogen Fertilization

et al. 2017

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-This study was conducted in order to verify if the phenological stage and the nitrogen fertilization interfere in the allelopathic activity and in the concentration of potentially allelopathic phenolic compounds of tough lovegrass (Eragrostis plana). The assay consisted of a bifactor 3 (0.100 and 200 kg N ha -1 ) x 2 (harvested in vegetative and reproductive stages), in a split plot design. The N doses constituted the main plot and the phenological stage during the harvest the subplots, resulting in six treatments. The tough lovegrass plants derived from each of the treatments were subjected to allelopathy bioassays, in which aqueous extracts of the aerial parts were applied to lettuce cypselae (Lactuca sativa) and to phytochemicals tests when ethanolic extracts were used, with subsequent partition with ethyl acetate, followed by a high-performance liquid chromatography analysis. There was nitrogen x phenological stage interaction on biological and chemical attributes. The allelopathic extracts were, in descending order of inhibition of germination, those from plants harvested at the vegetative stage and fertilized with 100 kg N and at the flowering stage with 200 kg N, which showed the highest catechin concentrations. The caffeic, ferulic, p-coumaric and vanillic acids were in a higher concentration in flowered and fertilized plants with 0 or 200 kg N. The management of the nitrogen fertilization and the harvesting age influence the allelopathic activity and the phytochemical composition of tough lovegrass.Keywords: germinability, phenolic acids, catechin, epicatechin. RESUMO -Este estudo foi realizado com o objetivo de verificar se a fenologia e a adubação nitrogenada interferem na atividade alelopática e na composição fenólica do capim-annoni (Eragrostis plana

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Optimization of extraction of phenolic compounds from wheat using response surface methodology

Cited by 673 publications

References 24 publications

Optimization of extraction of phenolics from leaves of Ficus virens

Optimization of extraction of phenolics from leaves of Ficus virens

Optimized microwave-assisted extraction of 6-gingerol from Zingiber officinale Roscoeand evaluation of antioxidant activity in vitro

Allelopathy and Allelochemicals of Eragrostis plana (Poaceae) and its Relation with Phenology and Nitrogen Fertilization

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