Use este identificador para citar ou linkar para este item:
https://locus.ufv.br//handle/123456789/22535
Registro completo de metadados
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Franco, Mathews de Oliveira Krambeck | |
dc.contributor.author | Suarez, Willian Toito | |
dc.contributor.author | Maia, Matheus Valentin | |
dc.contributor.author | Santos, Vagner Bezerra dos | |
dc.date.accessioned | 2018-11-12T19:12:07Z | |
dc.date.available | 2018-11-12T19:12:07Z | |
dc.date.issued | 2016-12-29 | |
dc.identifier.issn | 1936976X | |
dc.identifier.uri | http://dx.doi.org/10.1007/s12161-016-0777-y | |
dc.identifier.uri | http://www.locus.ufv.br/handle/123456789/22535 | |
dc.description.abstract | A simple, accurate, and low-cost analytical procedure for methanol determination in sugarcane spirits (cachaça) employing analysis of digital images is presented. A portable system with cheap materials and lighting system to obtain images from a smartphone was built and an RGB system was used for analytical purposes. The reaction for determination of methanol in beverages consists in methanol oxidation to methanal, and consequent formation of a violet chromophore in the presence of chromotropic acid on heating in an oven at 80 °C for 15 min. From the system optimization, analytical curves that showed good linearity for the green channel (from RGB) was built, with regression coefficient (R^ 2) of 0.998. Relevant matrix effect in the samples was not verified, since the recovery percentage ranged from 83 to 110%. The results of methanol concentration in six cachaça samples obtained by the developed method were compared with using the spectrophotometric method with a confidence level of 95% (n = 3). The developed method has some economic and environmental benefits, since it has low reagent consumption with 800 μL per measured spot, as well as, it presents cheap and handle-easy devices, which encourages the quality control of this toxic and undesirable contaminant for smallholders and industries on production of sugar cane spirits. | en |
dc.format | pt-BR | |
dc.language.iso | eng | pt-BR |
dc.publisher | Food Analytical Methods | pt-BR |
dc.relation.ispartofseries | Volume 10, Issue 6, Pages 2102– 2109, June 2017 | pt-BR |
dc.rights | Springer Science+Business Media New York 2016 | pt-BR |
dc.subject | Spot test | pt-BR |
dc.subject | Digital image analysis | pt-BR |
dc.subject | Methanol | pt-BR |
dc.subject | Sugar cane spirits | pt-BR |
dc.subject | Cachaça | pt-BR |
dc.subject | Food analysis | pt-BR |
dc.subject | Food contamination | pt-BR |
dc.title | Smartphone application for methanol determination in sugar cane spirits employing digital image-based method | en |
dc.type | Artigo | pt-BR |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
---|---|---|---|---|
artigo.pdf Until 2100-12-31 | texto completo | 1,8 MB | Adobe PDF | Visualizar/Abrir ACESSO RESTRITO |
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.