title: In vitro antioxidant, antimicrobial and anti-proliferative activities of purple potato extracts (Solanum tuberosum cv Vitelotte noire) following simulated gastro-intestinal digestion.
abstract: Analyses of antioxidant and in vitro antimicrobial and anti-proliferative activities of anthocyanin-rich extracts from purple potatoes, Solanum tuberosum L. cv Vitelotte noire (Solanaceae), were performed by simulating both a domestic cooking process and human digestion. Extracts of crude and cooked purple potato did not exhibit antimicrobial activity against the tester strains: Bacillus cereus, Escherichia coli and Pseudomonas aeruginosa. The behaviour changed after the simulated gastrointestinal transit, when an inhibition halo was observed against all tester strains used, ranging from 0.53 cm against B. cereus to 0.82 cm against E. coli. In addition antioxidant activity exhibited, before and after the simulated gastrointestinal digestion (5.96 mg/mL ± 0.92; 28 mg/mL ± 0 .13, respectively) and the persistence of anti-proliferative activity against the colon cancer cells Caco-2, SW48 and MCF7, MDA-MB-231 breast cancer cells, after the simulated digestion, (EC50 = 0.21; 1.13 μg/mL), suggest that vitelotte consumption might bring tangible benefits for human health.
authors.affiliation: a Institute of Food Science, CNR-ISA , Via Roma, 64, 83100 Avellino , Italy.
authors.forename: Maria Neve
authors.initials: MN
authors.lastname: Ombra
authors.forename: Florinda
authors.initials: F
authors.lastname: Fratianni
authors.forename: Tiziana
authors.initials: T
authors.lastname: Granese
authors.forename: Federica
authors.initials: F
authors.lastname: Cardinale
authors.forename: Autilia
authors.initials: A
authors.lastname: Cozzolino
authors.forename: Filomena
authors.initials: F
authors.lastname: Nazzaro
mesh_terms: D000872:Anthocyanins / Q000737:chemistry; D000890:Anti-Infective Agents / Q000494:pharmacology*; D000975:Antioxidants / Q000494:pharmacology*; D001409:Bacillus cereus / Q000187:drug effects; D018938:Caco-2 Cells; D049109:Cell Proliferation / Q000187:drug effects*; D004926:Escherichia coli / Q000187:drug effects; D006801:Humans; D061986:MCF-7 Cells; D010936:Plant Extracts / Q000494:pharmacology*; D011550:Pseudomonas aeruginosa / Q000187:drug effects; D011198:Solanum tuberosum / Q000737:chemistry*
chemical_list: D000872:Anthocyanins; D000890:Anti-Infective Agents; D000975:Antioxidants; D010936:Plant Extracts
keywords: anthocyanin-rich extracts; antimicrobial activity; cell proliferation; purple potatoes