Análise isotópica, físico-química, centesimal e energética de água de coco

• Ano de defesa: 2015
• Autor(a) principal: Imaizumi, Vitor Massami [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Coco - Produtos - Analise; Bebidas não-alcoólicas; Bebidas - Embalagens; Coconut products
• Link de acesso: http://hdl.handle.net/11449/127965; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/09-09-2015/000847045.pdf

This study aimed to perform, in Brazilian coconut water, physicochemical, energy and isotopic carbon analisys in order to characterize, attest the veracity of the energy information contained in the packaging label and check for tampering by addition of sugar cane above the legal limit, respectively. In this paper, coconut water were used fresh, manufactured in the laboratory (with known tampering) and industrialized. Coconut water samples fresh and industrialized were analyzed for the following parameters: crude protein, lipid, carbohydrate, calories, reducing sugars (RS), total reducing sugars (TRS), not reducing sugars (NRS), soluble solids, acidity titratable (AT), pH, ratio (soluble solids / titratable acidity) and turbidity. The isotopic analysis of fresh coconut water samples, made in the laboratory and industrialized were conducted in isotopic ratio mass spectrometer. The values obtained from isotopic analysis of beverages manufactured in the laboratory allowed to estimate the error of the method. Based on law information, a legality curve was built in a Cartesian graph. After isotopically analyze industrialized drink samples, it was possible to calculate the percentage of carbono from photosynthetic cycle C3 (coconut water) and carbon from photosynthetic cycle C4 (sugar cane) and compare it with the legality curve for possible tampering. Energy analysis of coconut water were carried out by the method of proximate analisys and the results are confronted with the label information ...