Análise isotópica do carbono em néctares de caju

• Autor(a) principal: Figueira, Ricardo [UNESP]
• Data de Publicação: 2011
• Outros Autores: Nogueira, Andressa Milene Parente [UNESP], Ducatti, Carlos [UNESP], Mischan, Martha Maria [UNESP], Venturini Filho, Waldemar Gastoni [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://serv-bib.fcfar.unesp.br/seer/index.php/alimentos/article/viewArticle/1501; http://hdl.handle.net/11449/137160
• topic: Beverages; Adulteration; Quality; Carbon-13; IRMS; Anacardium occidentale; Bebidas; Adulteração; Qualidade; Carbono-13; IRMS; Anacardium occidentale

The objective of this work were to determine the isotopic composition of commercial cashew nectar and by mixture models, to quantify the carbon from plants holding the C3 photosynthetic cycle so as to identify beverages that don’t abide with the rules from the Brazilian legislation. The nectars were produced in a laboratory according to Brazilian law. Adulterated nectar was also produced with a quantity of cashew pulp below the allowed limit. In these beverages were calculated the theoretical percentages of C3 source, by using the mass balance of soluble solids. For the isotope analysis the isotope values of cane sugar, cashew nectars and its fractions purifi ed sugar and insoluble solids were measured. With these values were calculated the practical percentage of C3 (real) source through the isotopic analysis in a mass spectrometer. The practical results were compared with the theoretical ones to defi ne the best way to quantify the C3 source. To identify the adulterated commercial nectars was measured to the legality limit according to the Brazilian legislation. Four trademarks of cashew nectars were analyzed and all of them classifi ed legal. The legal limit enabled to identify the beverages in accordance with Brazilian law. The methodology was effi cient for measuring the carbon from C3 source in commercial cashew nectar.