Análise isotópica do gás carbônico de espumantes comercializados no Brasil

• Ano de defesa: 2015
• Autor(a) principal: Jubileu, Bruno da Silva [UNESP]
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Vinho; Carbono - Isotopos; Isótopos estáveis; Bebidas - Legislação; Adulterações; Wine and wine making Analysis
• Link de acesso: http://hdl.handle.net/11449/136116; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/10-02-2016/000858832.pdf

The objective of this study was to analyze isotopically carbonic gas sparkling to detect tampering using the isotopic analysis method to determine the source of carbon dioxide (whether from plants the photosynthetic cycles C3 (grape and beet), C4 (sugar cane) or from another source. For this purpose, samples were analyzed Muscat commercial sparkling wine and sparkling wine, sparkling prepared in the laboratory, grape juice, sugar and commercial CO2. They also analyzed other carbonated beverages (mineral water, soft drinks, wines, etc.). The results were submitted to ANOVA and Tukey test for the detection of possible differences between the means of the isotopic ratios 13C / 12C, at a significance level of p <0.05. Following the Brazilian legislation for sparkling wines determined the possible range of values of δ13C for the drinks were in accordance with the rules. Regarding sparkling, four were outside the range established; for muscat sparkling, none was at odds with Brazilian law.