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Concentrações de sódio em bebidas carbonatadas nacionais Ciênc. Tecnol. Aliment.
Ferrari,Cristhiane Caroline; Soares,Lucia Maria Valente.
O consumo de bebidas carbonatadas no Brasil é elevado e não existem dados sobre os teores de sódio neste tipo de bebida comercializada no país. O presente trabalho examinou 97 amostras de refrigerantes compreendendo 14 marcas e 7 tipos de bebidas (cola, guaraná, limão, laranja, uva, soda e água tônica). Os teores de sódio encontrados variaram de 19 a 202mg Na/L. As bebidas adoçadas com açúcar apresentaram uma média de 74 ± 13mg Na/L e as bebidas com adoçantes artificiais, uma média de 151 ± 39mg Na/L. Portanto, os refrigerantes adoçados artificialmente fornecem cerca de duas vezes o teor de sódio das bebidas adoçadas com açúcar. Como conseqüência, um consumidor médio de refrigerantes (259mL/dia) poderá ingerir por dia cerca de 19mg de sódio provenientes do...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sódio; Bebidas carbonatadas.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612003000300021
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Fumonisin B1 and ochratoxin A in beers made in Brazil Ciênc. Tecnol. Aliment.
Kawashima,Luciane Mie; Vieira,Ana Paula; Soares,Lucia Maria Valente.
Samples of beer made in Brazil were analyzed for the presence of fumonisin B1 (FB1) and ochratoxin A (OTA). FB1 was searched for in 58 beer samples from 30 plants located in nine states. The samples were concentrated and cleaned up with strong ion exchange column, derivatized with OPA and analyzed by HPLC with fluorescence detection. The limit of detection was 0.26 ng.mL-1 and the average recovery was 98%. Twenty-five samples contained FB1 ranging from 1 to 40 ng.mL-1. Beer (123 samples) from 36 plants located in 5 states were analyzed for OTA by means of immunoaffinity column cleanup followed by liquid chromatography associated with fluorescence. The detection limit was 0.1 ng.mL-1 and the average recovery was 92%. Five samples contained OTA in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mycotoxins; Fumonisin B1; Ochratoxin A; Beer.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612007000200019
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Lead and cadmium content of Brazilian beers Ciênc. Tecnol. Aliment.
Soares,Lucia Maria Valente; Moraes,Adriana Maria Monteiro de.
The elements called heavy metals when ingested are not completely eliminated from animal bodies and are responsible for chronic and acute intoxications. Sixty-three samples of beer, produced in the states of São Paulo, Paraná, Rio de Janeiro, Rio Grande do Sul, Minas Gerais, and Pará, were analysed for lead and cadmium content by atomic absorption spectrometry with graphite furnace atomization and Zeeman correction. The concentrations of Pb and Cd of dark differed significantly from light beers, being higher in the former. No significant difference was found between the beers produced in predominantly rural areas and the ones produced in industrialized areas. The concentrations of lead and cadmium in all samples were bellow the maximum accepted by present...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lead; Cadmium; Beer.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612003000200031
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Survey of aflatoxins in tomato products Ciênc. Tecnol. Aliment.
Mariutti,Lilian Regina Barros; Soares,Lucia Maria Valente.
Tomatoes are highly susceptible to fungi contamination in the field, during transportation, processing, and storage. Aspergillus flavus and Aspergillus parasiticus have been isolated from tomatoes and tomato products, and both fungi species can produce aflatoxin, mycotoxin with hepatotoxic, carcinogenic, teratogenic, and mutagenic effects on all animal species tested so far. In order to verify a possible aflatoxin contamination of tomato products commercialized in Brazil, 63 samples of tomato products (pulp, paste, purée, ketchup, dehydrated tomatoes, and dried tomatoes preserved in oil) produced in 5 Brazilian states and 1 imported sample (ketchup), totalizing 29 brands, were analyzed by thin layer chromatography. The analytical method showed an average...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mycotoxins; Aflatoxins; Tomato products.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612009000200031
Registros recuperados: 4
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