Isolation and identification of polyphenolic compounds in longan pericarp

被引：48

作者：

He, Ning ^{[1
]}

Wang, Zhiyuan ^{[1
]}

Yang, Cuixian ^{[1
]}

Lu, Yinghua ^{[1
,2
]}

Sun, Daohua ^{[1
]}

Wang, Yuanpeng ^{[1
]}

Shao, Wenyao ^{[1
]}

Li, Qingbiao ^{[1
,2
]}

机构：

[1] Xiamen Univ, Dept Chem & Biochem Engn, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China

[2] Xiamen Univ, Key Lab Chem Biol Fujian Prov, Xiamen 361005, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2009年 / 70卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Longan pericarp; Polyphenol; Isolation; Antioxidant activity; ANTIOXIDANT ACTIVITY; MASS-SPECTROMETRY; EUPHORIA-LONGANA; LOUR; SEED; EXTRACTS; FRUIT; QUANTIFICATION; CONSTITUENTS; ABILITY; TANNINS;

D O I：

10.1016/j.seppur.2009.09.019

中图分类号：

TQ [化学工业];

学科分类号：

081705 [工业催化];

摘要：

The phenol contents and the antioxidant activities of 12 Chinese longan cultivars were studied. The polyphenols of longan pericarp and seed demonstrated significantly higher antioxidant capacities than did the pulp. The ferric reducing antioxidant powers of longan fruits were closely correlated with the polyphenol contents (r(2) = 0.8609, p < 0.001, n = 36). 52.9 mg g(-1) (dry matter) polyphenols were extracted from the pericarp of cultivar Wulongling fruit with acetone aqueous along with ultrasonic treatment. Further fractionation was performed by Sephadex LH-20 chromatography. The results suggested that gallic acid (GA) and ellagic acid (EA) were not the major contributors to the antioxidant activity of longan pericarp. 15 other phenolic profiles in longan pericarp along with a number of unknown structures were revealed with high-performance liquid chromatography coupled with electrospray ionization mass spectrometry (HPLC-ESI-MS) analysis. The rich array of phenolic compounds of several different types in longan pericarp extract might form a synergistic multilevel defence system against oxidation. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：219 / 224

页数：6

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