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Abstract:

An expanded-polystyrene factory located in northern Buenos Aires reported unusual dark spots causing esthetic damage in their production. A fungal strain forming black-olive colonies on extract malt agar medium was isolated from the damaged material and identified as Aureobasidium pullullans var. melanogenum. This fungus is particularly known for its capacity to produce hydrolytic enzymes and a biodegradable extracellular polysaccharide known as pullulan, which is used in the manufacture of packaging material for food and medicine. Laboratory tests were conducted to characterize its growth parameters. It was found that the organism was resistant to a wide range of pHs but did not survive at temperatures over 65 ◦C. The proposed action plan includes drying of the material prior to packaging and disinfection of the machinery used in the manufacturing process and of the silos used for raw material storage. © 2014, Asociación Argentina de Microbiología.

Registro:

Documento: Artículo
Título:Deterioration of expanded polystyrene caused by Aureobasidium pullulans var. melanogenum
Autor:Castiglia, V.C.; Kuhar, F.
Filiación:Laboratorio de Micología Experimental, Departamento de Biodiversidad y Biología Experimental, Universidad de Buenos Aires, Ciudad Universitaria, Intendente Güiraldes 2160, Buenos Aires, C1428EGA, Argentina
Centro de Investigación y Extensión Forestal Andino Patagónico (CIEFAP), Ruta 259 Km 4 (C.C. 14), Esquel, Chubut C. P. 9200, Argentina
Palabras clave:Industry; Management; Spot; hydrogen peroxide; hypochlorite sodium; polystyrene; agar; culture medium; disinfectant agent; microsphere; polystyrene derivative; Article; Aureobasidium pullulans; deterioration; disease elimination; fungal colonization; fungal contamination; fungal strain; fungus growth; fungus hyphae; melanogenum; microbiological examination; mycelium; mycosis; thermal death time; antibiotic resistance; Ascomycetes; culture medium; drug effects; food contamination; food industry; food packaging; growth, development and aging; isolation and purification; metabolism; pH; prevention and control; procedures; temperature; Agar; Ascomycota; Culture Media; Disinfectants; Drug Resistance, Microbial; Food Contamination; Food Industry; Food Packaging; Hydrogen-Ion Concentration; Microspheres; Polystyrenes; Temperature
Año:2015
Volumen:47
Número:3
Página de inicio:256
Página de fin:260
DOI: http://dx.doi.org/10.1016/j.ram.2015.05.001
Título revista:Revista Argentina de Microbiologia
Título revista abreviado:Rev. Argent. Microbiol.
ISSN:03257541
CODEN:RAMID
CAS:hydrogen peroxide, 7722-84-1; hypochlorite sodium, 7681-52-9; polystyrene, 9003-53-6; agar, 9002-18-0; Agar; Culture Media; Disinfectants; Polystyrenes
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03257541_v47_n3_p256_Castiglia

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Citas:

---------- APA ----------
Castiglia, V.C. & Kuhar, F. (2015) . Deterioration of expanded polystyrene caused by Aureobasidium pullulans var. melanogenum . Revista Argentina de Microbiologia, 47(3), 256-260.
http://dx.doi.org/10.1016/j.ram.2015.05.001
---------- CHICAGO ----------
Castiglia, V.C., Kuhar, F. "Deterioration of expanded polystyrene caused by Aureobasidium pullulans var. melanogenum " . Revista Argentina de Microbiologia 47, no. 3 (2015) : 256-260.
http://dx.doi.org/10.1016/j.ram.2015.05.001
---------- MLA ----------
Castiglia, V.C., Kuhar, F. "Deterioration of expanded polystyrene caused by Aureobasidium pullulans var. melanogenum " . Revista Argentina de Microbiologia, vol. 47, no. 3, 2015, pp. 256-260.
http://dx.doi.org/10.1016/j.ram.2015.05.001
---------- VANCOUVER ----------
Castiglia, V.C., Kuhar, F. Deterioration of expanded polystyrene caused by Aureobasidium pullulans var. melanogenum . Rev. Argent. Microbiol. 2015;47(3):256-260.
http://dx.doi.org/10.1016/j.ram.2015.05.001