Antioxidant and deodorizing activities of phenolic components in chestnut inner shell extracts

Ham, Ji Sun; Kim, Hee Young; Lim, Seung Taik

doi:10.1016/j.indcrop.2015.04.017

Cited by 48 publications

(37 citation statements)

References 28 publications

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“…We found dried chestnut byproducts to contain 35.8 and 36.4 mg GAE/g (w/w), soluble and insoluble tannins, respectively (Table 2). Of note, Ham et al (7) reported that yields of condensed tannin increased with extraction temperature, and that as much as 100.1 mg catechin equivalents/g may be obtained by extracting inner shells in water at 90 o C.…”

Section: Resultsmentioning

confidence: 99%

Antioxidant and anti-adipogenic activities of chestnut (Castanea crenata) byproducts

Youn

Shon

Kim

et al. 2016

Food Sci Biotechnol

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The antioxidant and anti-adipogenic activities of chestnut byproducts were evaluated. At 100 μg/mL, the methanol extract (ME) scavenged 34.2% of DPPH and 78.8% of ABTS radicals. The DPPH and ABTS radical scavenging activity of the water extract (WE) was found to be low (13.7 and 33.1%, respectively) compared with controls. WE and ME dose-dependently inhibited lipid accumulation of 3T3-L1 adipocytes. WE and ME at 100 μg/mL suppressed 3T3-L1 adipogenesis by 71.0 and 96.5%, respectively, when compared with mature adipocytes. The results indicated that WE and ME inhibited adipocyte differentiation by down-regulating the mRNA expression levels of CCAAT/enhancer binding protein (C/EBP)-β, C/EBPα, and peroxisome proliferator-activated receptor (PPAR)-γ in 3T3-L1 cells. Our study also revealed that WE and ME inhibited pre- and early stage adipogenesis in 3T3-L1 cells. The results suggest that chestnut byproducts are a promising source of antioxidant and antiobesity molecules.

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Section: Resultsmentioning

confidence: 99%

Antioxidant and anti-adipogenic activities of chestnut (Castanea crenata) byproducts

Youn

Shon

Kim

et al. 2016

Food Sci Biotechnol

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“…The treatment with AC is considered an effective method for the removal of phenolic compounds from LB hydrolyzates because of the large surface area of the charcoal particles, high adsorption capacity, and availability [36]. In addition, because some of these potential inhibitory molecules possess strong antioxidant power, their subsequent desorption from charcoal enables the recovery of bioactive compounds that can be further utilized for value-added applications [18,28,30,33,39]. In our experiments, different concentrations of AC were tested to obtain a substantial removal of phenolic compounds, but at the same time minimizing the loss of fermentable sugars.…”

Section: Saccharification Of Cs and Detoxification With Activated Chamentioning

confidence: 99%

Development of an Energy Biorefinery Model for Chestnut (Castanea sativa Mill.) Shells

et al. 2017

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Chestnut shells (CS) are an agronomic waste generated from the peeling process of the chestnut fruit, which contain 2.7-5.2% (w/w) phenolic compounds and approximately 36% (w/w) polysaccharides. In contrast with current shell waste burning practices, this study proposes a CS biorefinery that integrates biomass pretreatment, recovery of bioactive molecules, and bioconversion of the lignocellulosic hydrolyzate, while optimizing materials reuse. The CS delignification and saccharification produced a crude hydrolyzate with 12.9 g/L of glucose and xylose, and 682 mg/L of gallic acid equivalents. The detoxification of the crude CS hydrolyzate with 5% (w/v) activated charcoal (AC) and repeated adsorption, desorption and AC reuse enabled 70.3% (w/w) of phenolic compounds recovery, whilst simultaneously retaining the soluble sugars in the detoxified hydrolyzate. The phenols radical scavenging activity (RSA) of the first AC eluate reached 51.8 ± 1.6%, which is significantly higher than that of the crude CS hydrolyzate (21.0 ± 1.1%). The fermentation of the detoxified hydrolyzate by C. butyricum produced 10.7 ± 0.2 mM butyrate and 63.9 mL H 2 /g of CS.Based on the obtained results, the CS biorefinery integrating two energy products (H 2 and calorific power from spent CS), two bioproducts (phenolic compounds and butyrate) and one material reuse (AC reuse) constitutes a valuable upgrading approach for this yet unexploited waste biomass.

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“…In a study by Carocho et al [11], the extracts of chestnut skins showed strong antioxidant activities, and contained a large quantity of polyphenols, especially condensed and hydrolysable tannins [10,12,13]. Kurigalin, a agallotannin, was isolated from barks of C. crenata [14].…”

Section: Introductionmentioning

confidence: 99%

Phenolic Compositions and Antioxidant Properties in Bark, Flower, Inner Skin, Kernel and Leaf Extracts of Castanea crenata Sieb. et Zucc

et al. 2017

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In this study, different plant parts (barks, flowers, inner skins, kernels and leaves) of Castanea crenata (Japanese chestnut) were analyzed for total phenolic, flavonoid, and tannin contents. Antioxidant properties were evaluated by using 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2′-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS), reducing power, and β-carotene bleaching methods. The highest total phenolic and tannin contents were found in the inner skins (1034 ± 7.21 mg gallic acid equivalent/g extract and 253.89 ± 5.59 mg catechin equivalent/g extract, respectively). The maximum total flavonoid content was observed in the flowers (147.41 ± 1.61 mg rutin equivalent/g extract). The inner skins showed the strongest antioxidant activities in all evaluated assays. Thirteen phenolic acids and eight flavonoids were detected and quantified for the first time. Major phenolic acids were gallic, ellagic, sinapic, and p-coumaric acids, while the principal flavonoids were myricetin and isoquercitrin. The inner skin extract was further fractionated by column chromatography to yield four fractions, of which fraction F3 exhibited the most remarkable DPPH scavenging capacity. These results suggest that C. crenata provides promising antioxidant capacities, and is a potential natural preservative agent in food and pharmaceutical industries.

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Antioxidant and deodorizing activities of phenolic components in chestnut inner shell extracts

Cited by 48 publications

References 28 publications

Antioxidant and anti-adipogenic activities of chestnut (Castanea crenata) byproducts

Antioxidant and anti-adipogenic activities of chestnut (Castanea crenata) byproducts

Development of an Energy Biorefinery Model for Chestnut (Castanea sativa Mill.) Shells

Phenolic Compositions and Antioxidant Properties in Bark, Flower, Inner Skin, Kernel and Leaf Extracts of Castanea crenata Sieb. et Zucc

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