Abstract
In this study, changes in the microbial functional diversity during composting were analysed. Seven samples corresponding to (1) three different residues used in composting (sludges, citrus industrial processing waste, green wastes), and (2) four different stages of compost maturity were compared by their “community level physiological profiles” (CLPP). Ecoplates (Biolog) were inoculated with compost and matrices and incubated at 30 °C; optical density was measured every 8 h for 8 days. The samples were compared on the basis of the kinetics of the curves produced in each well. The data were used to calculate the area under the curve, and to study the curve kinetics. As a whole, the CLPP succeeded in addressing the role of different residues in the functional diversity of the mature compost. The microbial physiological profile of the sludge was found in the final product, while no “metabolic” trace of the other two matrices was found. The samples corresponding to different stages of the composting process were well characterised by their CLPPs, showing an increase in the metabolic diversity during the stabilisation process.
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Pinzari, F., Tittarelli, F., Benedetti, A., Insam, H. (2002). Use of CLPP to Evaluate the Role of Different Organic Materials in Composting. In: Insam, H., Riddech, N., Klammer, S. (eds) Microbiology of Composting. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-08724-4_32
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DOI: https://doi.org/10.1007/978-3-662-08724-4_32
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