RT Journal Article
T1 Biorefinery of brewery spent grain to obtain bioproducts with high value-added in the market
A1 Outeiriño Rodríguez, David
A1 Costa Trigo, Iván
A1 Ochogavias, Aida
A1 Pinheiro de Souza Oliveira, Ricardo
A1 Pérez Guerra, Nelson
A1 Salgado Seara, José Manuel
A1 Domínguez González, José Manuel
K1 3303 Ingeniería y Tecnología Químicas
AB The brewery industry is under economic and environmental pressure to minimize residual management costs, particularly brewery spent grain (BSG), which accounts for 80–85% (w/w) of the total by-products generated. BSG is a lignocellulosic material primarily composed of carbohydrates, proteins and lipids. Developing a biorefinery model for conversion of BSG into value-added products is a plausible idea. Previous work optimized the pretreatment of BSG with the ionic liquid [N1112OH][Gly] and further release of fermentable sugar-containing solutions by enzymatic hydrolysis, using an enzymatic cocktail obtained by solid-state fermentation of BSGwith Aspergillus brasiliensis CECT 2700 and Trichoderma reesei CECT 2414. The current work ends the biorefinery process, studying the fermentation of these culture media with two LAB strains, Lactobacillus pentosus CECT 4023and Lactobacillus plantarum CECT 221, from which the production of organic acids, bacteriocins, and microbial biosurfactants (mBS) was obtained. In addition to the bacteriocin activity observed, a mass balance of the wholebiorefinery process quantified the production of 106.4 g lactic acid and 6.76 g mBS with L. plantarum and 116.1 g lactic acid and 4.65 g mBS with L. pentosus from 1 kg of dry BSG. Thus, BSG shows a great potential for waste valorization, playing a major role in the implementation of biomass biorefineries in circular bioeconomy.
PB New Biotechnology
SN 18716784
YR 2024
FD 2024-03
LK http://hdl.handle.net/11093/5648
UL http://hdl.handle.net/11093/5648
LA eng
NO New Biotechnology, 79, 111-119 (2024)
NO Agencia Estatal de Investigación | Ref. PID2020–115879RB-I00
DS Investigo
RD 16-sep-2024