Pectin gels based on H+/(NH4)2SO4 and its potential in sustained release of NH4.
Int J Biol Macromol
; 208: 486-493, 2022 May 31.
Article
em En
| MEDLINE
| ID: mdl-35304200
ABSTRACT
A gelling strategy for HP was proposed in this study, ammonium sulfate (AS) as a co-solute could induce the gelling of HP in acidic environment. The solubility and Zeta potential of HP dramatically decreased in AS solution, which indicated AS could promote the aggregation of HP. The rheological results confirmed the gelling of HP (G' > Gâ³) with AS 25-30 wt% and pH ≤ 3.0, and the gel strength is mainly depended on HP rather than AS concentration. Smaller AS crystals (SEM) and reduced T2 values (LF-NMR) were observed in HP gels, suggested the gel network of HP could limit the migration of AS and water. Finally, it was found that the release process of NH4+ in HP + AS gel was lagged behind that of pure AS, which verified the potential of HP + AS gel in the field of sustained-release fertilizers.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Pectinas
Idioma:
En
Revista:
Int J Biol Macromol
Ano de publicação:
2022
Tipo de documento:
Article