MICROBIOLOGICAL ACTIVITY DURING THE COMPOSTING OF WASTES FROM BROILER PRODUCTIVE CHAIN
| Autor: | Luiz Antonio de Mendonça Costa, Francieli Helena Bernardi, Mônica Sarolli Silva de Mendonça Costa, Maico Chiarelotto, Felippe Martins Damaceno |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Urease
Agriculture (General) 020209 energy chemistry.chemical_element 02 engineering and technology Cellulase 010501 environmental sciences engineering.material complex mixtures 01 natural sciences Windrow S1-972 0202 electrical engineering electronic engineering information engineering Food science 0105 earth and related environmental sciences urease cellulase biology pH Compost Beta-glucosidase Agricultural and Biological Sciences (miscellaneous) Enzyme assay chemistry basal respiration β-glucosidase engineering biology.protein Bagasse alkaline phosphatase Carbon |
| Zdroj: | Engenharia Agrícola, Vol 38, Iss 5, Pp 741-750 (2018) Engenharia Agrícola v.38 n.5 2018 Engenharia Agrícola Associação Brasileira de Engenharia Agrícola (SBEA) instacron:SBEA |
| ISSN: | 1809-4430 0100-6916 |
| DOI: | 10.1590/1809-4430-eng.agric.v38n5p741-750/2018 |
| Popis: | The quality of the carbon used as bulking agent in the composting process directly affects the dynamics of the waste degradation, which is governed by an active and diversified microbiota. The monitoring of the basal respiration and enzymatic activities during the composting of broiler agro-industrial wastes with different carbon sources as bulking agents was the aim of this study. The microbiological activities were more intense in the thermophilic phase of the process. The dynamics of the enzymatic activities were affected by the different carbon sources used as bulking agent in the composition of the windrows. When the milled sugarcane bagasse was used as carbon source, the windrow presented the highest amount of P in its constitution and presented, in the evaluation averages, a greater intensity of the alkaline phosphatase enzyme (842 μg g−1 h−1 p-nitrophenol compost); the highest intensities of β-glucosidase and cellulase enzymes were observed when fresh and ground napier grass was used as the main source of carbon (6.1 μmol g−1 h−1 p-nitrophenol compost and 35.2 μmol g−1 16h−1 glucose compost, respectively); the highest intensity of the urease enzyme was also observed in the windrow where napier grass was used as the main carbon source and bulking agent (205,890 μmol g−1 2 h−1 N-NH4+ compost). It can be concluded that napier grass when used as the main source of carbon and bulking agent in the composting of the wastes from broiler chicken production chain promotes greater intensity of most of the enzymatic activities of interest. The enzymatic activity of urease presented the highest values due to the high nitrogen content of the composted wastes. |
| Databáze: | OpenAIRE |
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