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不同葡萄酒单宁的氧和 SO 消耗与其化学和电化学特性的关系。

Oxygen and SO Consumption of Different Enological Tannins in Relationship to Their Chemical and Electrochemical Characteristics.

机构信息

Department of Biotechnology, University of Verona, Villa Lebrecht, Via della Pieve 70, 37029 San Pietro in Cariano, Italy.

出版信息

J Agric Food Chem. 2020 Nov 25;68(47):13418-13425. doi: 10.1021/acs.jafc.0c00044. Epub 2020 Mar 19.

DOI:10.1021/acs.jafc.0c00044
PMID:32153190
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7997567/
Abstract

The oxidative behavior of five commercial enological tannins of different sources (tea, grape marc, grape seed, untoasted oak, and toasted oak) was investigated in model wine solutions in the presence or absence of SO. Solutions of the tannins were also analyzed for total phenolics, methyl cellulose precipitable tannins, high-performance liquid chromatography, and linear sweep voltammetry. Tea and oak-derived tannin solutions were characterized by the highest oxygen consumption rates, with oak-derived tannins exhibiting the highest oxygen consumption rates per milligram of phenolic material present. Linear sweep and derivative voltammetry parameters were well-correlated with oxygen consumption rates, whereas total phenolics or total tannins were not. All tannins were associated with consumption of SO upon reaction with oxygen, with the lowest rate of SO lost per milligram of O reacted being observed for oak tannins.

摘要

本研究考察了 5 种不同来源（茶、葡萄渣、葡萄种子、未烘烤橡木和烘烤橡木）的商业酿酒单宁在有或没有 SO 的模型酒溶液中的氧化行为。还分析了单宁的总酚类、甲基纤维素沉淀单宁、高效液相色谱和线性扫描伏安法。茶和橡木衍生的单宁溶液的耗氧率最高，其中橡木衍生的单宁每毫克酚类物质的耗氧率最高。线性扫描和导数伏安参数与耗氧率相关性较好，而总酚类或总单宁则不然。所有单宁与与氧反应时都会消耗 SO，反应每毫克 O 所消耗的 SO 量最低的是橡木单宁。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6129/7997567/159b9fde663f/jf0c00044_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6129/7997567/8219dec14adb/jf0c00044_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6129/7997567/2271a3412ba4/jf0c00044_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6129/7997567/8020d54ef6cd/jf0c00044_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6129/7997567/f5590956695c/jf0c00044_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6129/7997567/159b9fde663f/jf0c00044_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6129/7997567/8219dec14adb/jf0c00044_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6129/7997567/2271a3412ba4/jf0c00044_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6129/7997567/8020d54ef6cd/jf0c00044_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6129/7997567/f5590956695c/jf0c00044_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6129/7997567/159b9fde663f/jf0c00044_0005.jpg

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