A1 Refereed original research article in a scientific journal
Comparison of the postprandial effects of purple-fleshed and yellow-fleshed potatoes in healthy males with chemical characterization of the potato meals
Authors: Kaisa M. Linderborg, Johanna E. Salo, Marika Kalpio, Anssi L. Vuorinen, Maaria Kortesniemi, Mikko Griinari, Matti Viitanen, Baoru Yang, Heikki Kallio
Publisher: TAYLOR & FRANCIS LTD
Publication year: 2016
Journal: International Journal of Food Sciences and Nutrition
Journal name in source: INTERNATIONAL JOURNAL OF FOOD SCIENCES AND NUTRITION
Journal acronym: INT J FOOD SCI NUTR
Volume: 67
Issue: 5
First page : 581
Last page: 591
Number of pages: 11
ISSN: 0963-7486
DOI: https://doi.org/10.1080/09637486.2016.1181157
Abstract
The aim of the current study was to characterize the anthocyanin content and composition of a purple potato landrace cultivar (Solanum tuberosum Synkea Sakari') and to compare the postprandial effects of purple-fleshed potatoes, yellow-fleshed potatoes and bilberries in potato starch on postprandial glycemia and insulinemia in healthy males. The purple potato meal caused smaller insulinemia than the yellow potato meal (iAUC 120min 1347 and 2226, respectively, p=0.012 and iAUC 240min 1448 and 2403, p=0.007) or the bilberry meal (iAUC 120min 1920, p=0.027). The purple potato meal caused a smaller plasma glucose at 40min postprandially compared with the yellow potato meal (p=0.044). The results of this study suggest that anthocyanin-containing purple-fleshed potatoes influence the postprandial insulinemia positively. Since potatoes are the world's largest non-grain commodity, replacing yellow-fleshed potatoes with purple-fleshed potatoes as staple food could have large potential in maintaining public health.
The aim of the current study was to characterize the anthocyanin content and composition of a purple potato landrace cultivar (Solanum tuberosum Synkea Sakari') and to compare the postprandial effects of purple-fleshed potatoes, yellow-fleshed potatoes and bilberries in potato starch on postprandial glycemia and insulinemia in healthy males. The purple potato meal caused smaller insulinemia than the yellow potato meal (iAUC 120min 1347 and 2226, respectively, p=0.012 and iAUC 240min 1448 and 2403, p=0.007) or the bilberry meal (iAUC 120min 1920, p=0.027). The purple potato meal caused a smaller plasma glucose at 40min postprandially compared with the yellow potato meal (p=0.044). The results of this study suggest that anthocyanin-containing purple-fleshed potatoes influence the postprandial insulinemia positively. Since potatoes are the world's largest non-grain commodity, replacing yellow-fleshed potatoes with purple-fleshed potatoes as staple food could have large potential in maintaining public health.
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