RT journal article
T1 Rugulopteryx okamurae: Assessment of its potential as a source of monosaccharides for obtaining bio-products
A1 Romero Vargas, Agustín
A1 Fernández Güelfo, Luis Alberto
A1 Blandino Garrido, Ana María
A1 Romero García, Luis Isidoro
A1 Díaz Sánchez, Ana Belén
A2 Ingeniería Química y Tecnología de Alimentos
A2 Tecnologías del Medio Ambiente
K1 Macroalgae
K1 Dietary fibre
K1 Enzyme hydrolysis
K1 Kinetic model
K1 Reducing sugars
AB Beach-cast seaweed of the invasive brown macroalga Rugulopteryx okamurae was used in this study as raw material to obtain fermentable sugars, which can be converted into high added-value products. The dietary fibre composition of this macroalgae was determined and compared to other brown and red macroalgae, showing one of the highest proportions of dietary fibre (27.3 %) and cellulose (13.6 %). Therefore, the enzymatic hydrolysis of R. okamurae could lead to obtaining hydrolysates with a high concentration of reducing sugars. The main hydrolysis variables (biomass loading, enzyme dose and stirring rates) and the operation mode (fed-batch versus batch) were evaluated to maximize the sugar concentration. Thus, a maximum total reducing sugar concentration of 13.7 g/L was obtained at the optimum conditions: biomass loading of 10 % (w/v), 50 FPU/g biomass, 250 rpm and operating in batch mode. In addition, a kinetic model has been developed to describe the enzymatic hydrolysis of biomass. The model, unlike first-order kinetics, includes a specific term considering the enzyme diffusion through the solid biomass. The proposed kinetic model leads to better fitting of experimental data than the first-order model, especially for long incubation times.
PB Elsevier
SN 1385-8947
YR 2023
FD 2023-05-18
LK http://hdl.handle.net/10498/28938
UL http://hdl.handle.net/10498/28938
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 08-nov-2026