title: Comparison of the postprandial effects of purple-fleshed and yellow-fleshed potatoes in healthy males with chemical characterization of the potato meals.
abstract: The aim of the current study was to characterize the anthocyanin content and composition of a purple potato landrace cultivar (Solanum tuberosum 'Synkeä 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 120 min 1347 and 2226, respectively, p = 0.012 and iAUC 240 min 1448 and 2403, p = 0.007) or the bilberry meal (iAUC 120 min 1920, p = 0.027). The purple potato meal caused a smaller plasma glucose at 40 min 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.
authors.affiliation: a Division of Food Chemistry and Food Development, Department of Biochemistry , University of Turku , Turku , Finland ;
authors.forename: Kaisa M
authors.initials: KM
authors.lastname: Linderborg
authors.affiliation: a Division of Food Chemistry and Food Development, Department of Biochemistry , University of Turku , Turku , Finland ;
authors.forename: Johanna E
authors.initials: JE
authors.lastname: Salo
authors.affiliation: a Division of Food Chemistry and Food Development, Department of Biochemistry , University of Turku , Turku , Finland ;
authors.forename: Marika
authors.initials: M
authors.lastname: Kalpio
authors.affiliation: a Division of Food Chemistry and Food Development, Department of Biochemistry , University of Turku , Turku , Finland ;
authors.forename: Anssi L
authors.initials: AL
authors.lastname: Vuorinen
authors.affiliation: a Division of Food Chemistry and Food Development, Department of Biochemistry , University of Turku , Turku , Finland ;
authors.forename: Maaria
authors.initials: M
authors.lastname: Kortesniemi
authors.affiliation: b Clanet Oy , Espoo , Finland ;
authors.forename: Mikko
authors.initials: M
authors.lastname: Griinari
authors.affiliation: c Department of Geriatrics , University of Turku, Turku City Hospital , Turku , Finland ;|d Department of Geriatrics , Karolinska Institutet, Karolinska University Hospital Huddinge , Stockholm , Sweden.
authors.forename: Matti
authors.initials: M
authors.lastname: Viitanen
authors.affiliation: a Division of Food Chemistry and Food Development, Department of Biochemistry , University of Turku , Turku , Finland ;
authors.forename: Baoru
authors.initials: B
authors.lastname: Yang
authors.affiliation: a Division of Food Chemistry and Food Development, Department of Biochemistry , University of Turku , Turku , Finland ;
authors.forename: Heikki
authors.initials: H
authors.lastname: Kallio
mesh_terms: D000328:Adult; D000872:Anthocyanins / Q000008:administration & dosage / Q000097:blood; D000975:Antioxidants / Q000494:pharmacology; D001786:Blood Glucose / Q000378:metabolism; D003116:Color; D018592:Cross-Over Studies; D044882:Glucose Metabolism Disorders / Q000097:blood / Q000178:diet therapy; D038321:Glycemic Index; D006801:Humans; D007328:Insulin / Q000097:blood; D008297:Male; D009753:Nutritive Value; D010636:Phenols / Q000008:administration & dosage / Q000097:blood; D019518:Postprandial Period; D016037:Single-Blind Method; D011198:Solanum tuberosum / Q000737:chemistry* / Q000145:classification; D029800:Vaccinium myrtillus / Q000737:chemistry; D055815:Young Adult
chemical_list: D000872:Anthocyanins; D000975:Antioxidants; D001786:Blood Glucose; D007328:Insulin; D010636:Phenols
keywords: Anthocyanin; glycemia; insulinemia; postprandial; purple potato