Characterization of polyphenols and evaluation of antioxidant capacity in grape pomace of the cv. Malbec
Characterization of polyphenols and evaluation of antioxidant capacity in grape pomace of the cv. Malbec
复制标题
DOI：
10.1016/j.foodchem.2015.01.082
复制
发表时间：
2015-07-01
期刊：
影响因子：
8.8
通讯作者：
Bottini, Ruben
中科院分区：
文献类型：
--
作者：
Antoniolli, Andrea;Fontana, Ariel R.;Bottini, Ruben
研究了红葡萄(Vitis vinifera L.)葡萄渣提取物(GPE)中的低分子量多酚(LMW-PPS)和花色苷及其抗氧化能力。CV。马尔贝克。26种酚类化合物(13种LMW-PPS和13种花色苷)通过高效液相色谱-电喷雾质谱联用技术进行了表征和定量。低分子量多酚的最大浓度对应于黄烷醇(+)-儿茶素和(-)-表儿茶素，而花青素-3-葡萄糖苷含量最高。白藜芦醇是白藜芦醇的二苯乙烯类似物，具有更高的抗氧化活性，首次在白藜芦醇的GPE中被鉴定和定量。马尔贝克。经氧自由基吸收能力(ORAC)测定，Malbec GPE的抗氧化活性为2756mU·g-1GPE。因此，报告的数据支持使用酿酒副产品作为适合生物技术应用的廉价酚类化合物来源，作为可持续酿酒学的战略。(C)2015爱思唯尔有限公司。保留所有权利。
Low molecular weight polyphenols (LMW-PPs) and anthocyanins, along with the antioxidant capacity, were assessed in grape pomace extract (GPE) of red grape (Vitis vinifera L.) cv. Malbec. Twenty-six phenolics (13 LMW-PPs and 13 anthocyanins) were characterized and quantified by HPLC-MWD and UPLC-ESI-MS. The maximum concentrations of LMW-PPs corresponded to the flavanols (+)-catechin and (-)-epicatechin, whereas malvidin-3-glucoside was the most abundant anthocyanin. Piceatannol, a stilbene analogue to resveratrol with higher antioxidant activity, was firstly identified and quantified in GPE of the cv. Malbec. The antioxidant activity for Malbec GPE determined by oxygen radical absorbance capacity (ORAC) assay was 2756 mu mol TE g(-1) GPE. Therefore, the data reported sustain the use of winemaking by-products as a cheap source of phenolic compounds suitable for biotechnological applications, as a strategy for sustainable oenology. (C) 2015 Elsevier Ltd. All rights reserved.