Multiresponse Optimization and Prediction of Antioxidant Properties of Aqueous Ginger Extract

Abstract

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.

Influence of particle size and extraction solvent on antioxidant properties of extracts of tea, ginger, and tea–ginger blend

“…Some of these optimization results have been reported in Makanjuola et al. (,c, ). These extraction (multiresponse optimization) conditions used for the different powders are shown in Table .…”

“…Parameters that have high influence on the amount and composition of antioxidants in extracts include the extraction solvent, temperature, extraction time (duration), solvent‐to‐solid ratio, and storage conditions (Michiels, Kevers, Pincemail, Defraigne, & Jacques Dommes, ). Extraction of antioxidants from tea, ginger, and their blends have been reported to be affected by extraction temperature, powder concentration, extraction time, pH, solvent type, and solvent concentration (Makanjuola, Enujiugha, & Omoba, ; Makanjuola, Enujiugha, Omoba, & Sanni, ,c; Makanjuola et al., ; Perva‐Uzunalic et al., ; Savić et al., ; Turkmen et al., ; Vuong, Golding, Stathopoulos, Nguyen, & Roach, ).…”

Investigation of effect of antioxidant and antimicrobial agents on the quality of frozen crab gonads by E‐nose, GC‐MS, and sensory evaluation

“…Significant effects on reducing TBARS were found after the use of GEs, TP, and the mixture compared to Control‐V ( p < .05) (Table ). Some previous research have recorded the positive effects of TP and aqueous GE on reducing lipid oxidation (Ahamed et al, ; Cao et al, ; Makanjuola, Enujiugha, & Omoba, ; Manda, Adams, & Ercal, ). GE showed the best antioxidant properties among three single additives, with 5.38 mg MDA/kg in day 60.…”

Bioactive characterization of ultrasonicated ginger (Zingiber officinale) and licorice (Glycyrrhiza Glabra) freeze dried extracts

“…The colour characteristics could be exploited for rapid assessment of some antioxidant properties of the ginger extracts of the samples [46] . Colour properties (L*a*b* measurements) of ginger and licorice extracts are shown in Fig.…”