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


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


Phenolic Compositions and Antioxidant Properties in Bark, Flower, Inner Skin, Kernel and Leaf Extracts of Castanea crenata Sieb. et Zucc - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

1

Graduate School for International Development and Cooperation, Hiroshima University, Higashi-Hiroshima city, Hiroshima 739-8529, Japan

2

Process Chemistry and Technology Department, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, India





*

Author to whom correspondence should be addressed.



Academic Editors: Antonio Segura-Carretero and Elena Alañon

Abstract 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. View Full-Text

Keywords: Castanea crenata; inner skins; phenolics; flavonoids; column chromatography; ellagic acid; myricetin Castanea crenata; inner skins; phenolics; flavonoids; column chromatography; ellagic acid; myricetin





Autor: Phung Thi Tuyen 1, Tran Dang Xuan 1,* , Do Tan Khang 1, Ateeque Ahmad 2, Nguyen Van Quan 1, Truong Thi Tu Anh 1, La Hoang Anh 1 and Truong Ngoc Minh 1

Fuente: http://mdpi.com/



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