RT Journal Article
T1 D-lactic acid production from orange waste enzymatic hydrolysates with L. delbrueckii cells in growing and resting state
A1 de la Torre Pascual, Isabel
A1 Ladero Galán, Miguel
A1 Santos Mazorra, Victoria Eugenia
AB Agro-food industrial residues as carbon source for d-lactic acid production is a potential strategy to enhance economic feasibility of this bioprocess. Waste hydrolysates rich in monosaccharides can be obtained from such residues to finally render high acid yields after fermentation. This paper reports on the fed-batch processing of partially dried Orange Peel Waste (OPW) at low enzyme loadings, increasing the dry solid content from 7.7 to 22% w/w. The hydrolysate, containing >110 g/L fermentable monosaccharides, was compared to a model sugar solution to produce d-lactic acid using Lactobacillus delbrueckii sp. delbrueckii in a stirred tank bioreactor (STBR), in both growing and resting state. The latter mode for the cells proved to be the most productive. A non-structured non-segregated simple kinetic model previously proposed for this bioprocess was successfully fitted to experimental data from model and real OPW hydrolysates, providing several prospective explanations about the bacterium performance.
PB Elsevier
YR 2020
FD 2020-04-19
LK https://hdl.handle.net/20.500.14352/130174
UL https://hdl.handle.net/20.500.14352/130174
LA eng
NO de La Torre, I., Ladero, M., & Santos, V. E. (2020). D-lactic acid production from orange waste enzymatic hydrolysates with L. delbrueckii cells in growing and resting state. Industrial Crops and Products, 146, 112176.
NO Ministerio de Economía, Comercio y Empresa
NO Agencia Estatal de Investigación
DS Docta Complutense
RD 20 ene 2026