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. 2022 Oct 14;14(20):4305. doi: 10.3390/nu14204305

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© 2022 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 (https://creativecommons.org/licenses/by/4.0/).

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PLS-DA models based on postprandial AUCs for plasma metabolites obtained after HC meal taken with cinnamon/capsicum or placebo capsule. The data obtained from the samples collected during cinnamon/capsicum intervention are represented by red circles while during placebo intervention by green circles. Each panel shows results obtained for different data sets: panel A: ESI(-), R² = 0.988, Q² = 0.936; panel B: ESI(+), R² = 0.997, Q² = 0.973. R²: explained variance, Q²: predictive capability of the model.