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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/).
(A) The PCA score plot representing the distribution of the roasted, boiled, and fried groups of chestnut seed and shell samples. (B) The PCA loading plot demonstrating the correlation between the 25 individual phenolic variables of the chestnut matrix.