RESUMEN
The investigation of microbiological succession and changes in the enzymatic activity, temperature, pH, and phytotoxicity of lignin during its composting showed that the addition of a starter culture (a specially developed association of microorganisms) affects degradational succession in the compost pile. The process of composting can be monitored either microbiologically or biochemically, by measuring the activity of some enzymes. The compost is ready for use when the activity of oxidoreductases (particularly polyphenol oxidases) falls and the activity of invertase stabilizes at a certain level.
Asunto(s)
Conservación de los Recursos Naturales , Lignina/análisis , Eliminación de Residuos/métodos , Glicósido Hidrolasas/metabolismo , beta-FructofuranosidasaRESUMEN
Composting of hydrolytic lignin by a microbial association changed its molecular-weight composition, acid-based properties, and supramolecular structure. Specifically, by the end of the third month of composting, an increase was observed in its exchange capacity and the amount of negative charges, as well as in the content of phenyl, hydroxyl, and carboxyl groups. The use of this compost as a fertilizer for barley growth demonstrated that the changes increased the biological activity of hydrolytic lignin.