不吃葡萄倒吐葡萄皮.

Spit grape skins while not eating grapes.

吃猪肝，不吃葡萄皮。

People eat pig liver, but not grape skins.

葡萄皮红色素是从葡萄皮中提取的天然食用色素.

It is a kind of natural edible pigment extracted from grape skin.

吃葡萄不吐葡萄皮.

Spit no grape skins while eating grapes.

这个过程中葡萄皮中的单宁成分和色素进入发酵汁中。

It is the period when the tannic elements and the color of the skin diffuse in the fermented juice.

艾维瑞姆认为，在加工过程中提取更多的葡萄皮多酚可能会增加在白葡萄酒中的抗氧化剂含量。他的研究小组积压整个葡萄并且发酵多达18个小时产生酒精后再去掉葡萄皮。

His research team used whole squeezed grapes and incubated them for up to 18 hours in the presence of alcohol before removing the skins.

在一些红葡萄酒中，葡萄皮、葡萄梗和熟成用的橡木桶所带来的单宁会给人带来苦味或收敛性的感觉。

Tannins from the skins and sometimes stems of grapes and the oak barrels used for aging cause the bitter or astringent aftertaste in some red wines.

展望了天然葡萄皮色素的发展前景.

After stating the current research situation of vitis, the development prospects was looked up to.

对山葡萄皮红色素的提取及稳定性进行了研究.

The extraction and stability of red pigment of vitis amurensis husk were studied.

白藜芦醇及其衍生物存在于葡萄皮中，被认为是红酒一些明显的保健作用的来源。

Resveratrol and its many derivatives are present in the skin of grapes, for example, and are thought to be responsible for some of the apparent health benefits of red wine.