Optimization and prediction of antioxidant properties of a tea‐ginger extract

Makanjuola, Solomon Akinremi; Enujiugha, Victor N.; Omoba, Olufunmilayo Sade; Sanni, David Morakinyo

doi:10.1002/fsn3.237

Cited by 14 publications

(22 citation statements)

References 33 publications

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“…The aqueous extract was obtained as described by Makanjuola et al (5). The extraction was done in a conical flask placed on temperature controlled magnetic stirrer (UC 152, Bibby Scientific Ltd., Stone, UK).…”

Section: Methodsmentioning

confidence: 99%

“…The response surface modelling was carried out as described by Makanjuola et al (5). A face centered central composite design was used.…”

Section: Methodsmentioning

confidence: 99%

“…The suitability of hue index in evaluating colour of tea has also been reported (9). A multivariate regression analysis was carried out on the obtained data as described by Makanjuola et al (5). The dependent variables were the antioxidant properties.…”

Section: Methodsmentioning

confidence: 99%

“…Both gingerols and shogaols exhibit a host of biological activities, ranging from anticancer, antioxidant, antimicrobial, anti-inflammatory, and anti-allergic to various central nervous system activities (4). Processing conditions can affect extraction of phytochemicals from plants (5). The water extract of ginger has been reported to inhibit human low-density lipoprotein oxidation in vitro (6).…”

Section: Introductionmentioning

confidence: 99%

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Multiresponse Optimization and Prediction of Antioxidant Properties of Aqueous Ginger Extract

Makanjuola

Enujiugha

Omoba

2016

JFN

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The influence of extraction temperature, powder concentration, and extraction time on the antioxidant properties of aqueous ginger extract was investigated. The possibility of estimating the antioxidant properties of the extract from its absorbance and colour properties was also investigated. Results indicated that powder concentration was the most significant factor to consider in optimizing antioxidant extraction. However, temperature and time still influenced the 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activity while extraction temperature influenced the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity of the extract. Using the total phenol content, total flavonoid content, ABTS radical scavenging activity, and DPPH radical scavenging activity of the extract, the multiresponse optimization condition for extraction of antioxidant based on the experimental range studied is 96°C, 2.10 g/100 mL, and 90 min. The absorbance of the ginger extract at 610 nm could be exploited for rapid estimation of its total flavonoid and polyphenol with a R2 of 0.713 and 0.753, respectively.

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Section: Methodsmentioning

confidence: 99%

“…The response surface modelling was carried out as described by Makanjuola et al (5). A face centered central composite design was used.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multiresponse Optimization and Prediction of Antioxidant Properties of Aqueous Ginger Extract

Makanjuola

Enujiugha

Omoba

2016

JFN

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“…The desirability method [11,12] was used as optimization tool to find the best combination of factors that result in Boscia senegalensis decoction with maximum values of DPPH free radical scavenging, total reducing power, total phenolic compounds, but low level of glycemic index.…”

Section: Experimental Design Statistical Analysis and Optimization Pmentioning

confidence: 99%

Aqueous Extraction Optimization of the Antioxidant and Antihyperglycemic Components of Boscia Senegalensis Using Central Composite Design Methodology

Nicolas¹

2017

FSN

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10 min extraction time. At this optimum point the polyphenol content, total reducing power, DPPH free radical scavenging and glycemic index were respectively 2.34 mg galliceq/100 mL, 0.41 mg vitamin C eq/100 mL, 59.0% and 51.6%. In conclusion the response surface methodology successfully conducted to production of decoction of Boscia senegalensis with the highest polyphenol content, antioxidant properties and the lowest glycemic index.Keywords: Antioxidant propertie; Boscia senegalensis; Decoction; Glycemic index; Optimization Citation: Dongmo F, Sokeng Dogmo S, Njintang Yanou N (2017) Aqueous Extraction Optimization of the Antioxidant and Antihyperglycemic Components of Boscia Senegalensis Using Central Composite Design Methodology. J Food Sci Nutr 3: 015.• Material and Methods Sampling and production of Boscia senegalensis flourBoscia senegalensis seeds used in this study were harvested in the experimental farm of the University of Ndjamena, Chad in November 2014. The species were identified and voucher specimen was deposited at the Veterinary and Zoo technical Laboratory of Facha (N° 1344). The matured dried seeds were carefully cleaned and sorted to remove defective ones. The dry seeds were grounded into fine flour using an electric grinder (Culatti, Polymix, France) equipped with a sieve of diameter 800 µm mesh, sealed in polyethylene bags and stored at ambient temperature (25 ± 2°C) until analysis. Aqueous extraction of Boscia senegalensis powderBoscia senegalensis decoction was extracted from the flour using distilled water. The amount of flour used for each extraction corresponds to an average of mass of flour typically used for decoctions, according to the preliminary investigation from traditional health. Also, decoction time and temperature ranges were chosen based on the traditional practices for obtaining Boscia decoction. Seventeen extractions were performed in triplicate as shown in the experimental design (Table 1). The flour was blended with distilled water (flour ratio 0.3:10 to 4:10 g/mL) preheated to the desired temperature, and the slurry was stirred at 2500 rpm using an electric stirrer under different extraction time (3 -38 min) and temperature (25 to 95°C). After incubation, the sample was centrifuged at 1500 g for 15 min at 25°C, the supernatant was collected and the residue was re-extracted in the same conditions. The collected supernatants were combined and packaged in 100 mL volumetric glass vessels and stored at 4°C in the refrigerator for analysis.

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Comparison of selected clean and green extraction technologies for biomolecules from apple pomace

et al. 2018

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Apple pomace has been considered as a sustainable source for antioxidant phenolic compounds. Previous reports show extraction of total phenolic contents (TPC) by following various conventional and non-conventional techniques; however, a comparative study has not been reported. In the present work, conventional extraction was compared with several non-conventional extraction methods including ultrasound-assisted extraction (UAE), microwave-assisted extraction (MAE), high-speed homogenization (HH). Moreover, efficacy of combined treatments, including high-speed homogenization coupled with MAE and ultrasound-assisted enzymatic extraction (UAEE) was evaluated for the recovery of TPC. The results revealed that UAEE results in the highest TPC (4.62 mg GAE/g), moreover, it simultaneously enabled the recovery of low methoxy pectins with the degree of methylation ranging from 14.03- 28.85%. The LC-Q-Tof analysis revealed the presence of various phenolic acids and flavonoids. The DPPH radical scavenging assay showed that the phenolic rich extracts had IC50 values ranging from 27.1 to 54.6, depending on the extraction parameters. This article is protected by copyright. All rights reserved.

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Optimization and prediction of antioxidant properties of a tea‐ginger extract

Cited by 14 publications

References 33 publications

Multiresponse Optimization and Prediction of Antioxidant Properties of Aqueous Ginger Extract

Multiresponse Optimization and Prediction of Antioxidant Properties of Aqueous Ginger Extract

Aqueous Extraction Optimization of the Antioxidant and Antihyperglycemic Components of Boscia Senegalensis Using Central Composite Design Methodology

Comparison of selected clean and green extraction technologies for biomolecules from apple pomace

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