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Microfibers for juice analysis by solid-phase microextraction Ciênc. Tecnol. Aliment.
Fonseca,Renata Borchetta Fernandes; Carvalho,Lucia Maria Jaeger de; Rangel,Carolina Netto; Bizzo,Humberto Ribeiro.
In view of the interest in analyzing volatile compounds by SPME, the following five microfibers were tested, polydimethylsiloxane; polyacrylate; polydimethylsiloxane/divinylbenzene; carboxen/polydimethylsiloxane, and carbowax/divinylbenzene, to select the one which presents the best performance for the adsorption of the volatile compounds present in the headspace of acid lime juice samples. Sample stabilization time variations (30 and 60 minutes) were assessed as well the addition of NaCl to the samples. It was verified that the chromatogram with the most adsorbed volatile compounds was obtained with PDMS/DVB microfiber at 30 minutes and the addition of 0.2 g NaCl.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Citrus; Beverages; Analysis; Organic agriculture.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612008000500026
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Nutritional value of organic acid lime juice (Citrus latifolia T.), cv. Tahiti Ciênc. Tecnol. Aliment.
Rangel,Carolina Netto; Carvalho,Lucia Maria Jaeger de; Fonseca,Renata Borchetta Fernandes; Soares,Antonio Gomes; Jesus,Edgar Oliveira de.
Acid lime can be used as fresh fruit or as juice to increase the flavor of drinks. Therefore, it is necessary to analyze organic acid lime nutritional composition in order to evaluate if there are important differences among those conventionally produced. No significant differences in total titrable acidity, pH, ascorbic acid, sucrose, calcium, and zinc were found between the acid lime juice from organic biodynamic crops and conventional crops. However, the organic biodynamic fruits presented higher peel percentage than the conventional ones leading to lower juice yield. On the other hand, fructose, glucose, total soluble solids contents, potassium, manganese, iron, and copper were higher in the conventional samples. These results indicated few nutritional...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Physical and chemical composition; Fruit juice; Organic crops; Citrus latifolia.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612011000400014
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