title: The effect of germination on antioxidant and nutritional parameters of protein isolates from grass pea (Lathyrus sativus) seeds.
abstract: The aim of this research was to study the antioxidant and nutritional (selected objects) properties of protein isolates obtained from grass pea seedlings as compared with soaked and raw seeds. Two percent extract of isolate from 5-day-old seedlings showed the highest total antioxidant activity (25%) and the ability to chelate Fe²+ (2.35 mg/g d.m.) as compared with other isolates. Protein isolates from grass pea seeds had on average 89% total protein, 87% in vitro protein bioavailability, about 5574 TIU/g (d.m.) (trypsin inhibitors activity) and did not contain ODAP. Germination of seeds for 5 days considerably improved the in vitro bioavailability of isolates, by 12%, and profile of sulfur amino acids by 42%, in comparison with isolates obtained from the raw seeds. Isolates from 5-day-old grass pea seedlings had the best antioxidant properties and improved nutritional parameters (as compared with raw seeds), which makes them worthy of being considered as a potential food additive.
authors.affiliation: Department of Food Biotechnology, Faculty of Food Technology, University of Agriculture in Krakow, ul. Balicka 122, 30-149 Kraków, Poland. astarzynska@ar.krakow.pl
authors.forename: A
authors.initials: A
authors.lastname: Starzyńska-Janiszewska
authors.forename: B
authors.initials: B
authors.lastname: Stodolak
authors.forename: B
authors.initials: B
authors.lastname: Mickowska
mesh_terms: D000601:Amino Acids, Essential / Q000032:analysis; D000603:Amino Acids, Sulfur / Q000032:analysis; D000975:Antioxidants / Q000032:analysis*; D004063:Digestion; D005527:Food, Fortified; D018525:Germination; D007502:Iron Chelating Agents / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology; D027807:Lathyrus / Q000737:chemistry* / Q000254:growth & development; D009498:Neurotoxins / Q000032:analysis; D009753:Nutritive Value; D028321:Plant Preparations / Q000737:chemistry* / Q000378:metabolism / Q000494:pharmacology; D010940:Plant Proteins / Q000737:chemistry* / Q000378:metabolism / Q000494:pharmacology; D011044:Poland; D036226:Seedlings / Q000737:chemistry* / Q000254:growth & development; D012639:Seeds / Q000737:chemistry* / Q000254:growth & development; D013997:Time Factors; D014361:Trypsin Inhibitors / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology; D015091:beta-Alanine / Q000031:analogs & derivatives / Q000032:analysis
chemical_list: C510363:3-N-oxalyl-L -2,3-diaminopropanoic acid; D000601:Amino Acids, Essential; D000603:Amino Acids, Sulfur; D000975:Antioxidants; D007502:Iron Chelating Agents; D009498:Neurotoxins; D028321:Plant Preparations; D010940:Plant Proteins; D014361:Trypsin Inhibitors; D015091:beta-Alanine