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Chemical properties and hydrolytic enzyme activities for the characterisation of two-phase olive mill wastes composting.
Bioresour Technol. 2008 Jul; 99(10):4255-62.BT

Abstract

Two-phase olive mill waste (TPOMW) is a semisolid sludge generated during the extraction of olive oil by the two-phase centrifugation system. Among all the available disposal options, composting is gaining interest as a sustainable strategy to recycle TPOMW for agricultural purposes. The quality of compost for agronomical use depends on the degree of organic matter stabilization, but despite several studies on the topic, there is not a single method available which alone can give a certain indication of compost stability. In addition, information on the biological and biochemical properties, including the enzymatic activity (EA) of compost, is rare. The aim of this work was to investigate the suitability of some enzymatic activities (beta-glucosidase, arylsulphatase, acid-phosphatase, alkaline-phosphatase, urease and fluorescein diacetate hydrolysis (FDA)) as parameters to evaluate organic matter stability during the composting of TPOMW. These enzymatic indices were also compared to conventional stability indices. For this purpose two composting piles were prepared by mixing TPOMW with sheep manure and grape stalks in different proportions, with forced aeration and occasional turnings. The composting of TPOMW followed the common pattern reported previously for this kind of material with a reduction of 40-50% of organic matter, a gradual increase in pH, disappearance of phytotoxicity and formation of humic-like C. All EA increased during composting except acid-phosphatase. Significant correlations were found between EA and some important conventional stability indices indicating that EA can be a simple and reliable tool to determine the degree of stability of TPOMW composts.

Authors+Show Affiliations

Department of Soil and Water Conservation and Waste Management, CEBAS-CSIC, Campus Universitario de Espinardo, 30100 Murcia, Spain. mlcg@cebas.csic.esNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17950598

Citation

Cayuela, M L., et al. "Chemical Properties and Hydrolytic Enzyme Activities for the Characterisation of Two-phase Olive Mill Wastes Composting." Bioresource Technology, vol. 99, no. 10, 2008, pp. 4255-62.
Cayuela ML, Mondini C, Sánchez-Monedero MA, et al. Chemical properties and hydrolytic enzyme activities for the characterisation of two-phase olive mill wastes composting. Bioresour Technol. 2008;99(10):4255-62.
Cayuela, M. L., Mondini, C., Sánchez-Monedero, M. A., & Roig, A. (2008). Chemical properties and hydrolytic enzyme activities for the characterisation of two-phase olive mill wastes composting. Bioresource Technology, 99(10), 4255-62.
Cayuela ML, et al. Chemical Properties and Hydrolytic Enzyme Activities for the Characterisation of Two-phase Olive Mill Wastes Composting. Bioresour Technol. 2008;99(10):4255-62. PubMed PMID: 17950598.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Chemical properties and hydrolytic enzyme activities for the characterisation of two-phase olive mill wastes composting. AU - Cayuela,M L, AU - Mondini,C, AU - Sánchez-Monedero,M A, AU - Roig,A, Y1 - 2007/10/22/ PY - 2007/02/14/received PY - 2007/06/04/revised PY - 2007/08/25/accepted PY - 2007/10/24/pubmed PY - 2008/6/17/medline PY - 2007/10/24/entrez SP - 4255 EP - 62 JF - Bioresource technology JO - Bioresour. Technol. VL - 99 IS - 10 N2 - Two-phase olive mill waste (TPOMW) is a semisolid sludge generated during the extraction of olive oil by the two-phase centrifugation system. Among all the available disposal options, composting is gaining interest as a sustainable strategy to recycle TPOMW for agricultural purposes. The quality of compost for agronomical use depends on the degree of organic matter stabilization, but despite several studies on the topic, there is not a single method available which alone can give a certain indication of compost stability. In addition, information on the biological and biochemical properties, including the enzymatic activity (EA) of compost, is rare. The aim of this work was to investigate the suitability of some enzymatic activities (beta-glucosidase, arylsulphatase, acid-phosphatase, alkaline-phosphatase, urease and fluorescein diacetate hydrolysis (FDA)) as parameters to evaluate organic matter stability during the composting of TPOMW. These enzymatic indices were also compared to conventional stability indices. For this purpose two composting piles were prepared by mixing TPOMW with sheep manure and grape stalks in different proportions, with forced aeration and occasional turnings. The composting of TPOMW followed the common pattern reported previously for this kind of material with a reduction of 40-50% of organic matter, a gradual increase in pH, disappearance of phytotoxicity and formation of humic-like C. All EA increased during composting except acid-phosphatase. Significant correlations were found between EA and some important conventional stability indices indicating that EA can be a simple and reliable tool to determine the degree of stability of TPOMW composts. SN - 0960-8524 UR - https://www.unboundmedicine.com/medline/citation/17950598/Chemical_properties_and_hydrolytic_enzyme_activities_for_the_characterisation_of_two_phase_olive_mill_wastes_composting_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0960-8524(07)00718-3 DB - PRIME DP - Unbound Medicine ER -