RT info:eu-repo/semantics/article
T1 A techno-economic perspective on a microwave extraction process for efficient protein recovery from agri-food wastes
A1 Barrios, Cristina
A1 Fernández Delgado, Marina
A1 López Linares, Juan Carlos
A1 García Cubero, María Teresa
A1 Coca Sanz, Mónica
A1 Lucas Yagüe, Susana
K1 Protein recovery
K1 Recuperación proteica
K1 Economic analysis
K1 Análisis económico
AB Different agri-food wastes (brewer´s spent grain (BSG), spent coffee ground (SCG) and kale stems) have been proposed as excellent sources of protein-enriched extracts with an antioxidant capacity. The optimization of the microwave-assisted hydrothermal and alkali extraction has been compared in this study. From a technical and economic point of view, the extraction of BSG under optimal conditions (110 ºC, 10 min and 0.5 M NaOH) provided the best extract with a content of 14.6 kg protein/100 kg BSG (dry matter), 13.8 g/L of total sugars and an antioxidant activity (DPPH method) of 17.1 mg trolox equivalents (TE)/g BSG. This extract had the lowest production cost (29.9 €/kg) and a minimum selling price of 51.7 €/kg, estimated for an extraction pilot plant of 15 kg/h of BSG. The microwave-assisted hydrothermal extraction of kale stems, a novel waste in the biorefinery context, also provides bioactive and green extracts of commercial interest. There is a need for specific research studies related to biorefining of agri-food wastes to produce proteins for food, contributing to the development of a future sustainable and climate-neutral agriculture. The proposed techno-economic assessment represents an important advance in research and scaling-up of microwave-assisted extraction processes for protein recovery from agri-food wastes.
PB Elsevier
SN 0926-6690
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/53719
UL https://uvadoc.uva.es/handle/10324/53719
LA eng
NO Industrial Crops and Products, 2022, vol. 186, 115166
NO Producción Científica
DS UVaDOC
RD 11-jul-2024