TY - JOUR
T1 - Antioxidant and deodorizing activities of phenolic components in chestnut inner shell extracts
AU - Ham, Ji Sun
AU - Kim, Hee Young
AU - Lim, Seung Taik
N1 - Funding Information:
This study was financially supported by a grant from Korea University.
Publisher Copyright:
© 2015 Elsevier B.V.
Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2015/10/1
Y1 - 2015/10/1
N2 - Phenolic compounds were extracted from chestnut inner shell using aqueous alcohols and alkaline solutions (50% ethanol, 50% methanol, 1% NaOH, and 2% NaOH) at different temperatures (25-90°C). The phenolic composition, antioxidant activity, and deodorizing activity of the extracts were evaluated for comparison. Total phenolic content and antioxidant activity were increased as the extraction temperature increased. However, the phenolic composition and antioxidant activity were significantly different among the extracts prepared under different conditions. Aqueous ethanol (50%, v/w) was most effective in extracting the total phenolics, resulting in the highest DPPH radical scavenging activity. The alkaline solutions appeared more effective in extracting specific phenolics, such as tannins and flavonoids, than aqueous alcohols. Moreover, the alkaline extracts exhibited the higher activities in deodorizing trans-2-nonenal and methyl mercaptan than the alcoholic extracts. The deodorizing activity of chestnut inner shell extracts (CISE) were positively correlated to the residual contents of tannins and flavonoids (R2=0.85-0.94, and 0.81-0.93, respectively).
AB - Phenolic compounds were extracted from chestnut inner shell using aqueous alcohols and alkaline solutions (50% ethanol, 50% methanol, 1% NaOH, and 2% NaOH) at different temperatures (25-90°C). The phenolic composition, antioxidant activity, and deodorizing activity of the extracts were evaluated for comparison. Total phenolic content and antioxidant activity were increased as the extraction temperature increased. However, the phenolic composition and antioxidant activity were significantly different among the extracts prepared under different conditions. Aqueous ethanol (50%, v/w) was most effective in extracting the total phenolics, resulting in the highest DPPH radical scavenging activity. The alkaline solutions appeared more effective in extracting specific phenolics, such as tannins and flavonoids, than aqueous alcohols. Moreover, the alkaline extracts exhibited the higher activities in deodorizing trans-2-nonenal and methyl mercaptan than the alcoholic extracts. The deodorizing activity of chestnut inner shell extracts (CISE) were positively correlated to the residual contents of tannins and flavonoids (R2=0.85-0.94, and 0.81-0.93, respectively).
KW - Antioxidant
KW - Chestnut inner shell
KW - Deodorizing activity
KW - Flavonoids
KW - Phenolics
KW - Tannins
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U2 - 10.1016/j.indcrop.2015.04.017
DO - 10.1016/j.indcrop.2015.04.017
M3 - Article
AN - SCOPUS:84929492613
SN - 0926-6690
VL - 73
SP - 99
EP - 105
JO - Industrial Crops and Products
JF - Industrial Crops and Products
ER -