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在发酵浸渍过程中,葡萄中花色苷和原花青素向葡萄酒中的提取受到酿造技术的影响。

The extraction of anthocyanins and proanthocyanidins from grapes to wine during fermentative maceration is affected by the enological technique.

机构信息

Food Science and Technology Department, Faculty of Veterinary Science, University of Murcia, Murcia, Spain.

出版信息

J Agric Food Chem. 2011 May 25;59(10):5450-5. doi: 10.1021/jf2002188. Epub 2011 Apr 12.

Abstract

The effect of three enological techniques (low temperature prefermentative maceration, must freezing with dry ice, and the use of a maceration enzyme) on the extraction of anthocyanins and proanthocyanidins from must to wine during fermentative maceration was studied to determine the extent to which these compounds are extracted and to assess the changes on their qualitative composition due to enological technique applied. The results showed that the dry ice treatment led to wines with high color intensity and high anthocyanin content, the maximum rate of extraction being observed the first 6 days of fermentative maceration. Regarding the effect of the different techniques on the quantitative and qualitative composition of proanthocyanidins, only the dry ice treatment seemed to favor the extraction of high molecular weight skin proanthocyanidins. The low temperature prefermentative maceration treatment led to the highest concentration of proanthocyanidins at the moment of pressing; however, this treatment, contrary to expectations, led to wines with the highest content of seed-derived proanthocyanidins. The use of the maceration enzyme also increased the concentration of proanthocyanidins during all of the fermentative process, as compared to a control wine, although the increase was not only due to skin proanthocyanidins but also seed proanthocyanidins. We have demonstrated in this study that maceration enzymes also facilitate seed phenolic extraction.

摘要

研究了三种酿造技术(低温预发酵浸渍、干冰冷冻和使用浸渍酶)对发酵浸渍过程中从葡萄汁到葡萄酒中花色苷和原花青素提取的影响,以确定这些化合物的提取程度,并评估由于应用的酿造技术对其定性组成的变化。结果表明,干冰处理导致葡萄酒具有高色泽强度和高花色苷含量,在发酵浸渍的前 6 天观察到最大提取速率。关于不同技术对原花青素定量和定性组成的影响,只有干冰处理似乎有利于提取高分子量的果皮原花青素。低温预发酵浸渍处理导致压榨时原花青素浓度最高;然而,与预期相反,该处理导致葡萄酒中种子来源的原花青素含量最高。与对照酒相比,使用浸渍酶也会在整个发酵过程中增加原花青素的浓度,尽管增加不仅归因于果皮原花青素,也归因于种子原花青素。在这项研究中,我们证明了浸渍酶还可以促进种子酚类物质的提取。

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