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Open AccessArticle

Comparative Assessment of Phenolic Profiles, Cellular Antioxidant and Antiproliferative Activities in Ten Varieties of Sweet Potato (Ipomoea Batatas) Storage Roots

by Yiming Sun 1,†, Zhijun Pan 2,†, Chunxian Yang 1, Zhenzhen Jia 3 and Xinbo Guo 2,*
1
Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Life Sciences, Southwest University, Chongqing 400715, China
2
School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
3
Research Center of Agriculture, Pingdingshan Academy of Agricultural Science, Pingdingshan 467000, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Molecules 2019, 24(24), 4476; https://doi.org/10.3390/molecules24244476
Received: 1 November 2019 / Revised: 26 November 2019 / Accepted: 3 December 2019 / Published: 6 December 2019
(This article belongs to the Section Natural Products Chemistry)
Sweet potato is the sixth most important crop widely cultivated around the world with abundant varieties. Different varieties gain different phenolic profiles which has drawn researchers’ attention for its unique health benefits. Our study evaluated the phenolic profiles, total and cellular antioxidant activities, antiproliferative activities, and cytotoxicity in 10 cultivated varieties of sweet potato in different colours. Among fourteen metabolites detected in our study, hyperoside, ferulic acid and caffeic acid were considered as prominent in SPSRs. According to the principle component analysis, phytochemical composition of HX22, YS15 and YS7 was quite similar. The results also evidenced that purple-fleshed varieties, such as YS43, YZ7 and YY153, have higher total phenolics content and corresponding stronger total antioxidant capacities as well as cellular antiproliferative activities against human liver cancer HepG2 cells than other varieties. The extremely significant correlation between phenolics and total antioxidant activity was also revealed by Pearson correlation analysis (p < 0.05). However, no significant relevance was found between intracellular antioxidant activity and total phenolic content or flesh colour of sweet potatoes. View Full-Text
Keywords: sweet potato; phytochemicals; cellular antioxidant activity; antiproliferation activity; cytotoxicity sweet potato; phytochemicals; cellular antioxidant activity; antiproliferation activity; cytotoxicity
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Sun, Y.; Pan, Z.; Yang, C.; Jia, Z.; Guo, X. Comparative Assessment of Phenolic Profiles, Cellular Antioxidant and Antiproliferative Activities in Ten Varieties of Sweet Potato (Ipomoea Batatas) Storage Roots. Molecules 2019, 24, 4476.

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