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. 2019 Jan 3;11(1):80. doi: 10.3390/nu11010080

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Multivariate analysis of tea samples. (A) Principal components analysis of sensory data. Samples shown in black, original axes in red, variance from new factors in parentheses. (B) Principal components analysis of instrumental data. Samples shown in black, original axes in blue, variance from new factors in parentheses. (C) Multiple factor analysis of sensory and instrumental data. Samples shown in black, sensory axes in red, instrumental axes in blue, variance from new factors in parentheses. Samples denoted as green tea brewed in tap (GT), bottled (GB), and deionized (GD) water, black tea brewed in tap (BT), bottled (BB), and deionized (BD) water.