RT info:eu-repo/semantics/article
T1 Evaluation of the acid hydrolysis as pre-treatment to enhance the integration and functionality of starch composites filled with rich-in-pectin agri-food waste orange peel
A1 Quilez Molina, Ana Isabel
A1 Oliveira Salmazo, Leandra
A1 Amezúa Arranz, Clara
A1 López Gil, Alberto
A1 Rodríguez Pérez, Miguel Ángel
K1 Biomasa
K1 Compost
K1 Starch
K1 Biocomposite
K1 Pectin
K1 Orange peel
K1 Almidón
K1 Biocompuesto
K1 Pectina
K1 Piel de naranja
K1 2306.90 Química de Productos Naturales Orgánicos
AB The poor management of citrus wastes as a result of their low compostability and value for animal feeding greatly hinders the disposal of this waste. Nowadays, the incorporation of vegetable biomass into a polymer matrix is widely considered as an emerging approach to reduce the environmental problem related to the accumulation and management of food wastes. However, the fibrillar morphology and chemical heterogeneity of biomass usually restrains the compatibility with polymer matrices. Despite that, starch composites containing up to 40 wt% of the neat/hydrolyzed orange peel with excellent mechanical, and moisture resistant features were successfully fabricated in this research. The compatibility between both components was improved by using a simple and scalable process based on the acid hydrolysis of the biomass. Indeed, it was demonstrated that the final properties of these biocomposites were tuned by modifying the acid conditions (type and concentration of acid). For example, composites treated with chlorohydric acid displayed superior Young’s modulus values (about 30% more) and slightly greater elongation than the composites composed by 40 wt% of neat orange peel. Moreover, the exposure of vegetable biomass to moderate acid conditions (0.1 and 1 M chlorohydric acid) resulted into the generation of highly-value products, such as organic acids or humic substances, able to form ester bonds with the starch matrix strengthening the water resistance and mechanical features of the composites.
PB Elsevier
SN 0926-6690
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/61528
UL https://uvadoc.uva.es/handle/10324/61528
LA eng
NO Industrial Crops and Products, 2023, vol. 205, 117407
NO Producción Científica
DS UVaDOC
RD 02-dic-2024