Occurrence of molds on laminated paperboard for aseptic packaging, selection of the most hydrogen peroxide- and heat-resistant isolates and determination of their thermal death kinetics in sterile distilled water

dc.creatorDelgado, Denise Aparecida
dc.creatorSant'Ana, Anderson de Souza
dc.creatorde Massaguer, Pilar Rodriguez
dc.date2012
dc.date2013-09-19T18:06:38Z
dc.date2016-06-30T18:51:35Z
dc.date2013-09-19T18:06:38Z
dc.date2016-06-30T18:51:35Z
dc.date.accessioned2018-03-29T01:53:10Z
dc.date.available2018-03-29T01:53:10Z
dc.identifierWorld Journal of Microbiology & Biotechnology. Springer, v.28, n.7, p.2609-2614, 2012
dc.identifier0959-3993
dc.identifierWOS:000306074800018
dc.identifier10.1007/s11274-012-1064-8
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/2324
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/2324
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1308336
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionThis study aimed at enumerating molds (heat-labile and heat-resistant) on the surface of paperboard material to be filled with tomato pulps through an aseptic system and at determining the most heat-and hydrogen peroxide-resistant strains. A total of 118 samples of laminated paperboard before filling were collected, being 68 before and 50 after the hydrogen peroxide bath. Seven molds, including heat-resistant strains (Penicillium variotii and Talaromyces flavus) with counts ranging between 0.71 and 1.02 CFU/cm(2) were isolated. P. variotii was more resistant to hydrogen peroxide than T. flavus and was inactivated after heating at 85 degrees C/15 min. When exposed to 35 % hydrogen peroxide at 25 degrees C, T. flavus (F5E2) and N. fischeri (control) were less resistant than P. variotti (F1A1). P. citrinum (F7E2) was shown to be as resistant as P. variotti. The D values (the time to cause one logarithmic cycle reduction in a microbial population at a determined temperature) for spores of P. variotii (F1A1) and N. fischeri (control) with 4 months of age at 85 and 90 degrees C were 3.9 and 4.5 min, respectively. Although the contamination of packages was low, the presence of heat-and chemical-resistant molds may be of concern for package sterility and product stability during shelf-life. To our knowledge, this is the first report that focuses on the isolation of molds, including heat-resistant ones, contaminating paperboard packaging material and on estimating their resistance to the chemical and physical processes used for packaging sterilization.
dc.description28
dc.description7
dc.description2609
dc.description2614
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageeng
dc.publisherSpringer
dc.publisherNew York
dc.relationWorld Journal of Microbiology & Biotechnology
dc.rightsfechado
dc.sourceWOS
dc.subjectAseptic packaging
dc.subjectAseptic processing
dc.subjectPackage sterilant
dc.subjectHydrogen peroxide
dc.subjectMolds
dc.subjectHeat resistance
dc.subjectBACILLUS-ANTHRACIS SPORES
dc.subjectAPPLE JUICE
dc.subjectTEMPERATURE
dc.subjectPASTEURIZATION
dc.subjectINACTIVATION
dc.subjectSUBTILIS
dc.subjectBIOCIDES
dc.subjectGROWTH
dc.subjectSYSTEM
dc.subjectFUNGI
dc.titleOccurrence of molds on laminated paperboard for aseptic packaging, selection of the most hydrogen peroxide- and heat-resistant isolates and determination of their thermal death kinetics in sterile distilled water
dc.typeArtículos de revistas


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