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Three new phenolic compounds that are contained in most white grapes grown in New York were positively identified. They are catechin-gallate, catechin-catechin-gallate and β-1,3,6-tri-O- galloyl-D-glucose. In addition, a new compound, gallocatechin-gallate, was also identified.
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Lee et al. (1990) studied this question.
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