title: Fermentation enhances the content of bioactive compounds in kidney bean extracts.
abstract: The influence of solid (SSF) or liquid state fermentation (LSF) for 48 and 96 h on the production of water soluble extracts from kidney beans was investigated. SSF was carried out by Bacillus subtilis, whilst LSF was performed either by natural fermentation (NF) or by Lactobacillus plantarum strain (LPF). SSF extracts showed high soluble phenolic compound content (31-36 mg/g) and antioxidant activity (508-541 μg trolox equivalents/g), whilst LSF extracts exhibited potential antihypertensive activity due to their large γ-aminobutyric acid (GABA) content (6.8-10.6 mg/g) and angiotensin converting enzyme inhibitory (ACEI) activity (>90%). Therefore, fermentation can be considered as a valuable process to obtain bioactive ingredients from kidney beans, which could encourage their utilisation in the formulation of added-value functional foods.
authors.affiliation: Institute of Food Science, Technology and Nutrition (ICTAN-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain.
authors.forename: Rocio I
authors.initials: RI
authors.lastname: Limón
authors.affiliation: Institute of Food Science, Technology and Nutrition (ICTAN-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain.
authors.forename: Elena
authors.initials: E
authors.lastname: Peñas
authors.affiliation: CCT CERELA-CONICET, Chacabuco 145, 4000 SM Tucumán, Argentina.
authors.forename: M Inés
authors.initials: MI
authors.lastname: Torino
authors.affiliation: Institute of Food Science, Technology and Nutrition (ICTAN-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain.
authors.forename: Cristina
authors.initials: C
authors.lastname: Martínez-Villaluenga
authors.affiliation: Research Group on Polyphenols, Nutrition and Bromatology Unit, Faculty of Pharmacy, University of Salamanca, Campus Miguel Unamuno, 37007 Salamanca, Spain.
authors.forename: Montserrat
authors.initials: M
authors.lastname: Dueñas
authors.affiliation: Institute of Food Science, Technology and Nutrition (ICTAN-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain. Electronic address: frias@ictan.csic.es.
authors.forename: Juana
authors.initials: J
authors.lastname: Frias
mesh_terms: D000806:Angiotensin-Converting Enzyme Inhibitors / Q000494:pharmacology; D000959:Antihypertensive Agents / Q000494:pharmacology; D005285:Fermentation; D006863:Hydrogen-Ion Concentration; D048191:Lactiplantibacillus plantarum / Q000378:metabolism; D027805:Phaseolus / Q000737:chemistry*; D010636:Phenols / Q000032:analysis; D010936:Plant Extracts / Q000032:analysis* / Q000494:pharmacology; D005680:gamma-Aminobutyric Acid / Q000032:analysis
chemical_list: D000806:Angiotensin-Converting Enzyme Inhibitors; D000959:Antihypertensive Agents; D010636:Phenols; D010936:Plant Extracts; D005680:gamma-Aminobutyric Acid
keywords: Antihypertensive compounds; Antioxidants; Fermentation; Functional ingredients; Kidney beans