High carotenoid content always lead to a yellower/redder color in carrots, while a puzzling phenomenon still exists that freeze-dried carrots (FDC) have a higher carotenoid content but a lighter color compared with thermal-dried carrots. It seems that carotenoid is not the only main factor affecting sample color. Hence the discoloration characteristics of freeze-dried carrots were comprehensively analyzed from physical structure and color-related chemical composition profile.

中文翻译：

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从物理结构和颜色相关化学成分对冻干胡萝卜圆柱体的变色研究

高类胡萝卜素含量总是导致胡萝卜颜色更黄/更红，而一个令人费解的现象仍然存在，即与热干胡萝卜相比，冻干胡萝卜（FDC）类胡萝卜素含量更高，但颜色更浅。似乎类胡萝卜素并不是影响样品颜色的唯一主要因素。因此，从物理结构和与颜色相关的化学成分谱上综合分析了冻干胡萝卜的变色特性。