title: Solid state fermentation with lactic acid bacteria to improve the nutritional quality of lupin and soya bean.
abstract: BACKGROUND
  The ability of bacteriocin-like inhibitory substance (BLIS)-producing lactic acid bacteria (LAB) to degrade biogenic amines as well as to produce L(+) and D(-)-lactic acid during solid state fermentation (SSF) of lupin and soya bean was investigated. In addition, the protein digestibility and formation of organic acids during SSF of legume were investigated.
  
  
  RESULTS
  Protein digestibility of fermented lupin and soya bean was found higher on average by 18.3% and 15.9%, respectively, compared to untreated samples. Tested LAB produced mainly L-lactic acid in soya bean and lupin (D/L ratio 0.38-0.42 and 0.35-0.54, respectively), while spontaneous fermentation gave almost equal amounts of both lactic acid isomers (D/L ratio 0.82-0.98 and 0.92, respectively). Tested LAB strains were able to degrade phenylethylamine, spermine and spermidine, whereas they were able to produce putrescine, histamine and tyramine.
  
  
  CONCLUSIONS
  SSF improved lupin and soya bean protein digestibility. BLIS-producing LAB in lupin and soya bean medium produced a mixture of D- and L-lactic acid with a major excess of the latter isomer. Most toxic histamine and tyramine in fermented lupin and soya bean were found at levels lower those causing adverse health effects. Selection of biogenic amines non-producing bacteria is essential in the food industry to avoid the risk of amine formation.
authors.affiliation: Lithuanian University of Health Sciences, 47181, Kaunas, Lithuania.
authors.forename: Elena
authors.initials: E
authors.lastname: Bartkiene
authors.forename: Vita
authors.initials: V
authors.lastname: Krungleviciute
authors.forename: Grazina
authors.initials: G
authors.lastname: Juodeikiene
authors.forename: Daiva
authors.initials: D
authors.lastname: Vidmantiene
authors.forename: Zita
authors.initials: Z
authors.lastname: Maknickiene
mesh_terms: D001679:Biogenic Amines / Q000378:metabolism*; D004032:Diet; D004044:Dietary Proteins / Q000378:metabolism; D004063:Digestion; D005285:Fermentation; D005516:Food Microbiology; D006801:Humans; D019344:Lactic Acid / Q000378:metabolism*; D007778:Lactobacillus / Q000378:metabolism*; D031297:Lupinus / Q000378:metabolism* / Q000382:microbiology; D009753:Nutritive Value; D012639:Seeds / Q000378:metabolism* / Q000382:microbiology; D030262:Soybean Proteins / Q000378:metabolism; D013025:Glycine max / Q000378:metabolism* / Q000382:microbiology
chemical_list: D001679:Biogenic Amines; D004044:Dietary Proteins; D030262:Soybean Proteins; D019344:Lactic Acid
keywords: biogenic amines; d-, l-lactic acid; fermentation; legume