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1.
Biodegradation ; 19(4): 519-26, 2008 Jul.
Article in English | MEDLINE | ID: mdl-17957486

ABSTRACT

Mushroom production on coffee pulp as substrate generates an intense black residual liquid, which requires suitable treatment. In the present study, Pleurotus ostreatus growth in wastewater from mushroom farm was evaluated as a potential biological treatment process for decolourisation as well as to obtain biomass (liquid inoculum). Culture medium components affecting mycelial growth were determined, evaluating colour removal. Laccase activity was monitored during the process. P. ostreatus was able to grow in non diluted WCP. Highest biomass yield was obtained when glucose (10 g/l) was added. The addition of this carbon source was necessary for efficient decolourisation. Agitation of the culture improved biodegradation of WCP as well as fungal biomass production. Laccase and manganese-independent peroxidase activities were detected during fungal treatment of the WCP by P. ostreatus CCEBI 3024. The laccase enzyme showed good correlation with colour loss. Both wastewater colour and pollution load (as chemical oxygen demand) decreased more than 50% after 10 days of culture. Phenols were reduced by 92%.


Subject(s)
Agaricales , Agriculture , Color , Pleurotus/metabolism , Water Pollutants/metabolism , Culture Media
2.
Rev. cuba. hig. epidemiol ; 42(3)sep.-dic. 2004.
Article in Spanish | LILACS | ID: lil-628626

ABSTRACT

Con el objetivo de desarrollar el servicio de salud ocupacional del Centro de Toxicología y Biomedicina de Santiago de Cuba, se elaboró un documento (asesoría de riesgo laboral) a partir de la identificación de los principales riesgos laborales y los efectos tóxicos que para la salud estos poseen a corto y a largo plazos, para lo cual se efectuó una búsqueda bibliográfica exhaustiva y una valoración cuantitativa de los riesgos físicos, así como cualitativa de los riesgos químicos, lo que permite establecer una posible asociación de dichos riesgos con el resultado del estudio de salud ocupacional de los trabajadores expuestos. En el presente trabajo se muestran los aspectos informativos de este documento, la metodología de trabajo y las fuentes de información consultadas.


In order to develop the occupational health service of theToxicology and Biomedicine Center of Santiago de Cuba, a document (working risk counselling) was made starting from the identification of the main working risks and their toxic effects for health on the short and long term. To this end, there were made an exhaustive bibliographic search, a quantitative assessment of the physical risks and a qualitative evaluation of the chemical risks that allowed to establish a possible association of these risks with the result of the occupational health study conducted among the exposed workers. The informative aspects of this document, the working methodology and the consulted information sources were shown in the present paper.

3.
Rev. cuba. hig. epidemiol ; 42(3)sept.-dic. 2004.
Article in Spanish | CUMED | ID: cum-24770

ABSTRACT

Con el objetivo de desarrollar el servicio de salud ocupacional del Centro de Toxicología y Biomedicina de Santiago de Cuba, se elaboró un documento (asesoría de riesgo laboral) a partir de la identificación de los principales riesgos laborales y los efectos tóxicos que para la salud estos poseen a corto y a largo plazos, para lo cual se efectuó una búsqueda bibliográfica exhaustiva y una valoración cuantitativa de los riesgos físicos, así como cualitativa de los riesgos químicos, lo que permite establecer una posible asociación de dichos riesgos con el resultado del estudio de salud ocupacional de los trabajadores expuestos. En el presente trabajo se muestran los aspectos informativos de este documento, la metodología de trabajo y las fuentes de información consultadas(AU)


Subject(s)
Humans , Occupational Risks/legislation & jurisprudence , Occupational Exposure/standards , Occupational Exposure/prevention & control , Occupational Health/legislation & jurisprudence , Impacts of Polution on Health , Chemical Compound Exposure , Physical Contaminants
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