RT info:eu-repo/semantics/article
T1 Opportunities for ivory nut residue valorization as a source of nanocellulose colloidal suspensions
A1 Carvajal Barriga, Enrique Javier
A1 Putaux, Jean-Luc
A1 Martín Ramos, Pablo
A1 Simbaña, Jennifer
A1 Portero Barahona, Patricia
A1 Martín Gil, Jesús
K1 Polymers
K1 Biomaterials
K1 Nanocellulose
K1 Agricultural engineering
K1 Agricultural residues
K1 Residuos agrícolas
K1 Sustainable development
K1 Desarrollo sostenible
K1 Palm trees
K1 Palmeras
K1 Agriculture - Latin America
K1 Agricultura - América Latina
K1 Forests and forestry
K1 Bosques y silvicultura
K1 Plant science
K1 Chemistry, Organic
K1 Ivory nut
K1 Nuez de marfil
K1 2206.10 Polímeros
K1 2304.02 Celulosa
K1 3102 Ingeniería Agrícola
K1 3106 Ciencia Forestal
K1 3106.08 Silvicultura
K1 2306 Química Orgánica
AB Ivory nut seeds have been traditionally exploited in Central and South America for obtaining vegetable ivory. The residues from this industry are susceptible to valorization as a source of fatty acids (by organic extraction) and mannans (by alkaline dissolution and regeneration). Nonetheless, cellulose may also be recovered at the end of this fractionation process by acid hydrolysis and functionalization, with associated advantages over other lignocellulosic sources due to the absence of lignin in the endospermic tissue. In this work, various experimental parameters (sulfuric acid concentration, temperature, and hydrolysis time) were investigated to optimize the processing conditions for preparing stable nanocellulose suspensions after ultrasonication. The most stable nanocellulose gel (1 wt% solid content) was obtained after 4-h hydrolysis at 60 °C with 8 M H2SO4 and was characterized by using complementary tech-niques, including dynamic light scattering (DLS), transmission electron microscopy (TEM), X-ray powder diffraction (XRD), nano-fibril sulfation measurements, vibrational and solid-state nuclear magnetic resonance (CP/MAS 13C-NMR) spectroscopies, and thermal analysis. This nanocellulose hydrogel is susceptible to further utilization in various applications and fields, e.g., in agricul-ture for controlling the release of agrochemicals, in pharmaceutics for developing new dosage forms, and in the treatment of wastewater from the textile and paper industries.
PB MDPI
SN 2310-2861
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/69577
UL https://uvadoc.uva.es/handle/10324/69577
LA eng
NO Gels, 2023, Vol. 9, Nº. 1, 32
NO Producción Científica
DS UVaDOC
RD 18-nov-2024