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Molecules 2012, 17(12), 14954-14967; doi:10.3390/molecules171214954

Phenolic Profiles and Antioxidant Activity of Litchi (Litchi Chinensis Sonn.) Fruit Pericarp from Different Commercially Available Cultivars

Key Laboratory of Functional Food Research, Ministry of Agriculture, Bio-Technical Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510610, China
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Received: 13 October 2012 / Revised: 5 December 2012 / Accepted: 11 December 2012 / Published: 17 December 2012
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Abstract

Litchi fruit pericarp (LFP) contains significant amounts of phenolics which have been found to exhibit diverse biological activities. The purpose of this work was to determine the varietal differences in phenolic profiles and antioxidant activity of LFP from nine commercially available cultivars. The total phenolic and flavonoid contents ranged from 9.39 to 30.16 mg gallic acid equivalents/g fresh weight (FW) and from 7.12 to 23.46 mg catechin equivalents/g FW, respectively. The total anthocyanin contents ranged from 1.77 to 20.94 mg cyanidin-3-glucoside equivalents/100 g FW. Three anthocyanins, including cyanidin-3-rutinoside, cyanidin-3-glucoside, malvidin-3-glucoside, were detected, and cyanidin-3-rutinoside was the predominant constituent which contributes from 68.8% to 100% to total anthocyanins, The total procyanidin contents ranged from 4.35 to 11.82 mg epicatechin equivalents/g FW. Procyanidin B2, epicatechin, A-type procyanidin trimer, and procyanidin A2 were detected in all nine litchi varieties. The oxygen radical absorbance capacity activities and DPPH radical-scavenging activities ranged from 430.49 to 1752.30 μmol TE/100 g FW and from 4.70 to 11.82 mg/g (IC50), respectively. These results indicate that there are significant differences in phytochemical profiles and antioxidant activity among the tested varieties. Knowing the phenolic profiles and antioxidant activity of LFP of different varieties gives the insights into its potential application to promote health.
Keywords: phenolics; anthocyanins; procyanidins; litchi fruit pericarp; antioxidant activity phenolics; anthocyanins; procyanidins; litchi fruit pericarp; antioxidant activity
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Li, W.; Liang, H.; Zhang, M.-W.; Zhang, R.-F.; Deng, Y.-Y.; Wei, Z.-C.; Zhang, Y.; Tang, X.-J. Phenolic Profiles and Antioxidant Activity of Litchi (Litchi Chinensis Sonn.) Fruit Pericarp from Different Commercially Available Cultivars. Molecules 2012, 17, 14954-14967.

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