Abstract
Spanish bell peppers (Capsicum annuum L.) and chili peppers sourced from Kenya and Turkey were analyzed for their carotenoid content, bioaccessibility, and bioavailability. The order of total carotenoid content in peppers and their respective micelles was red > green > yellow. In terms of cellular carotenoid transport as a percentage of original food and micelle content, the order was yellow peppers > green > red; however, the opposite trend was seen for the actual amount of total carotenoids transported by Caco-2 cells. Although lutein was generally the most abundant carotenoid in the micelles (496.3-1565.7 microg 100 g(-1)), cellular uptake and transport of beta-carotene were the highest, 8.3-31.6 and 16.8-42.7%, respectively. Hence, the actual amount of carotenoids present in the original food and respective micelles seems to reflect the amount transported by Caco-2 cells. Therefore, color influenced the carotenoid profile, bioaccessibility, and bioavailability of carotenoids rather than pepper type.
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