dc.creatorMacIel V.B.V.
dc.creatorFranco T.T.
dc.creatorYoshida C.M.P.
dc.date2012
dc.date2015-06-26T20:29:16Z
dc.date2015-11-26T14:25:50Z
dc.date2015-06-26T20:29:16Z
dc.date2015-11-26T14:25:50Z
dc.date.accessioned2018-03-28T21:28:34Z
dc.date.available2018-03-28T21:28:34Z
dc.identifier
dc.identifierPolimeros. , v. 22, n. 4, p. 318 - 324, 2012.
dc.identifier1041428
dc.identifier10.1590/S0104-14282012005000054
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84871341177&partnerID=40&md5=5bc9d9bc209bbb4f87cc7504e8300ea2
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/96961
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/96961
dc.identifier2-s2.0-84871341177
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1245869
dc.descriptionChlorophyll was incorporated into chitosan films, forming intelligent systems able to detect variations in temperature. Chitosan is a biodegradable polymer that forms flexible, resistant films with an efficient oxygen barrier. Chlorophyll was added (0.25 g/100 g) into chitosan suspension (2.00 g/100 g) and intelligent films (FIQ) were cast. The effects of temperature (10 °C to 50 °C) and luminosity (0 to 1000 lx) on the films were studied using an experimental design with two variables, analyzing the color parameters L*, a*, b* and mechanical properties. The films were characterized according to their homogeneity, flexibility, color and handling. Chitosan suspensions containing chlorophyll were also applied as coating on the surface of pieces of card-paper, forming a card paper film system (S-FP). By visual inspection we observed the color of the S-FP changing irreversibly from green to yellow when the temperature was above 50 °C. Therefore, the S-FP system can potentially be used as a colorimetric indicator for the 50 °C to 70 °C range, being advantageous owing to the ease of fabrication, biodegradability, safe use for food and low cost.
dc.description22
dc.description4
dc.description318
dc.description324
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dc.languagept
dc.publisher
dc.relationPolimeros
dc.rightsaberto
dc.sourceScopus
dc.titleAlternative Intelligent Material For Packaging Using Chitosan Films As Colorimetric Temperature Indicators [sistemas Inteligentes De Embalagens Utilizando Filmes De Quitosana Como Indicador Colorimétrico De Temperatura]
dc.typeArtículos de revistas


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