RT Journal Article
T1 Detoxification of chestnut burrs hydrolyzates to produce biomolecules
A1 Costa Trigo, Iván
A1 Pérez Paz, Alicia
A1 Otero Penedo, Patricia
A1 Outeiriño Rodríguez, David
A1 Oliveira, Ricardo Pinheiro de Souza
A1 Domínguez González, José Manuel
K1 3303 Ingeniería y Tecnología Químicas
K1 3302.90 Ingeniería Bioquímica
AB Activated charcoal was proposed to detoxify the streams rich in carbohydrates generated after the acid hydrolysis of chestnut (Castanea sativa) burrs. Adsorption isotherms, kinetics and thermodynamics parameters were evaluated under different ratios of adsorbent/adsorbate (0.25–5.0% w/v). Results showed that Langmuir equations fitted better the equilibrium sorption than the Freundlich isotherm, while pseudo-second-order reaction kinetics explained the reaction mechanism most effectively. An exothermic and non-spontaneous adsorption process was defined by negative enthalpies and positive free energies; meanwhile negative entropies showed the affinity of phenolic compounds for the adsorbent. Mid temperatures (30 °C) and higher amounts of charcoal (5.0 % (w/v)) stimulated the adsorption process, with a higher percentage of phenolic compounds removal (95.50 ± 0.03%). Lactobacillus plantarum CECT-221 was unable to consume raw hydrolyzates; however, it was capable to produce bacteriocins with antimicrobial activity against Listeria monocytogenes CECT-934, cell-bond biosurfactants and lactic acid on detoxified hydrolyzates in biotechnology processes carried out in Erlenmeyer flasks and 2 L stirred tank bioreactors
PB Biochemical Engineering Journal
SN 1369703X
YR 2020
FD 2020-07-15
LK http://hdl.handle.net/11093/6886
UL http://hdl.handle.net/11093/6886
LA eng
NO Biochemical Engineering Journal, 159, 107599 (2020)
NO Xunta de Galicia | Ref. ED481B 2018/073
DS Investigo
RD 18-sep-2024