Edible mushroom species: mineral profile, bioaccumulation of metals and preparation of certified reference material

Made available in DSpace on 2014-09-09T12:30:31Z (GMT). No. of bitstreams: 2 license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) 3.pdf: 6860927 bytes, checksum: e648ea5190135ba1504f4985c3ec1499 (MD5) Previous issue date: 2012Fundação Oswaldo Cruz. Instituto Nacional de Controle de Qualidade em Saúde. Rio de Janeiro, RJ, Brasil.No presente estudo foram determinadas as concentrações de vinte e cinco elementos (Al, As, Ba, Bi, Ca, Cd, Cr, Cu, Fe, Ga, K, Li, Mg, Mn, Mo, Na, Ni, Pb, Rb, Sb, Se, Sn, Sr, V e Zn) em três espécies comestíveis de cogumelos, Lentinula edodes (Shiitake), Pleurotus ostreatus (Shimeji) e Pleurotus eryngii (Cardoncello) coletadas no Cultivo Cogumelos Imperial, Petrópolis, Rio de Janeiro. As amostras foram coletadas trimestralmente durante o ano de 2010. Um grama de amostra foi seco em estufa, homogeneizado em processador doméstico e pesado em cadinho de porcelana. Após a pré-digestão com adição ácido nítrico concentrado procedeu-se à mineralização em forno mufla na temperatura de 450º C por 12 h. As cinzas foram solubilizadas com 2 mL de ácido nítrico 10 % (v/v) e o conteúdo transferido com água desionizada para frasco de polipropileno de 15 mL. Utilizou-se para a determinação dos elementos as técnicas analíticas ICP-MS, utilizando Rh como padrão interno e EAA chama. Dois materiais de referência certificados do National Institute of Standards and Technology (NIST), Apple Leaves n° 1515 e Mussel Tissue n° 2976 foram utilizados obtendo valores de recuperação em torno de 98 %, com exceção para o Sn (51 %). Os resultados demonstraram que os cogumelos estudados são alimentos com altos teores de Fe, Mg, Mn, Mo e Zn com mais de 30 % das quantidades recomendadas para ingestões diárias para estes nutrientes conforme a RDC nº 269 e a portaria nº 27. Os cogumelos também apresentaram uma razão muito baixa Na/K, caracterizando-os como alimentos recomendados para hipertensos e as concentrações de Cd, Pb e As estão abaixo dos limites máximos permitidos preconizados pela legislação em vigor...In this study we determined the concentration of twenty-five elements (Al, As, Ba, Bi, Ca, Cd, Cr, Cu, Fe, Ga, K, Li, Mg, Mn, Mo, Na, Ni, Pb, Rb , Sb, Se, Sn, Sr, V and Zn) in three species of edible mushrooms, Lentinula edodes (shiitake), Pleurotus ostreatus (Shimeji) and Pleurotus eryngii (Cardoncello) from Petropolis, Rio de Janeiro. Samples were collected quarterly during the year 2010. One gram of sample was oven-dried, homogenized in domestic processor and after a pre-digestion with concentrated nitric acid addition proceeded to mineralization in a muffle furnace at a temperature of 450 ° C for 12 h. The ashes were solubilized with 2 ml of nitric acid 10 % (v/v) and transferred with deionized water to a polypropylene 15 mL bottle. For the elements determination it was used ICP-MS, using Rh as internal standard and FAAS. Two certified reference materials from NIST, Apple Leaves nº 1515 and Mussel Tissue nº 2976, obtained recovery values around 98 %, except for the Sn (51 %). The results showed that the mushrooms are foods with high levels of Fe, Mg, Mn, Mo and Zn over 30% from the recommended daily intake for these nutrients according to Brazilian Legislation. The mushrooms also showed a very low ratio Na/K, characterizing them as recommended foods for hypertensive and their concentrations of Cd, Pb and As are below the recommended maximum limits allowed by Brazilian legislation. Two mushrooms, Shiitake and Cardoncello, as candidates of certified reference material was prepared and a collaborative study took place with ten laboratories. Nine elements, Ca, Cd, Cu, Fe, K, Mg, Mn, Na and Zn, had their concentrations certified. In bioaccumulation studies, factors were determined for 14 elements Al, Ba, Ca, Cr, Cu, Fe, K, Mg, Mn, Na, Rb, Sr, V and the results showed thate Al, Ca, Mn, Sr are bioexcluded elements. It was concluded that among the morphological structures, cap and stem, the elements are in greater quantity in the cap

Efficiency of rubidium marking in Aedes albopictus (Diptera: Culicidae): preliminary evaluation on persistence of egg labeling, survival, and fecundity of marked female

Rubidium chloride (RbCl) has been used for the study of vector biology and behavior, although the efficacy of marking, egg production, and survivorship of marked females have been poorly studied. Four concentrations of RbCl were tested, among which 0.025 M was the best for marking Aedes albopictus: more than 80% of egg batches of females fed once with blood containing RbCl were marked; Rb-marked egg batches, interspersed with non marked ones were recovered until 61 days after a blood meal containing RbCl followed by non marked meals; RbCl was essentially detected in the abdomen of marked females, whose egg production and survivorship did not differ from non marked ones, at least in the three weeks following the Rb-marked blood meal

SHORT COMMUNICATION - Efficiency of Rubidium Marking in Aedes albopictus (Diptera: Culicidae): Preliminary Evaluation on Persistence of Egg Labeling, Survival, and Fecundity of Marked Female

Rubidium chloride (RbCl) has been used for the study of vector biology and behavior, although the efficacy of marking, egg production, and survivorship of marked females have been poorly studied. Four concentrations of RbCl were tested, among which 0.025 M was the best for marking Aedes albopictus: more than 80% of egg batches of females fed once with blood containing RbCl were marked; Rb-marked egg batches, interspersed with non marked ones were recovered until 61 days after a blood meal containing RbCl followed by non marked meals; RbCl was essentially detected in the abdomen of marked females, whose egg production and survivorship did not differ from non marked ones, at least in the three weeks following the Rb-marked blood meal

Macro e elementos-traço em cogumelos comestíveis, Shiitake, Shimeji e Cardoncello, coletados em Petrópolis, Rio de Janeiro, Brasil

Submitted by Alexandre Sousa ([email protected]) on 2014-10-16T13:37:59Z No. of bitstreams: 1 Cienc Rural_44_943-949.pdf: 120022 bytes, checksum: 2d6b905fa2b8937ef8c09d2d82843de1 (MD5)Approved for entry into archive by Alexandre Sousa ([email protected]) on 2014-10-16T13:38:10Z (GMT) No. of bitstreams: 1 Cienc Rural_44_943-949.pdf: 120022 bytes, checksum: 2d6b905fa2b8937ef8c09d2d82843de1 (MD5)Made available in DSpace on 2014-10-16T13:56:59Z (GMT). No. of bitstreams: 1 Cienc Rural_44_943-949.pdf: 120022 bytes, checksum: 2d6b905fa2b8937ef8c09d2d82843de1 (MD5) Previous issue date: 2014Fundação Oswaldo Cruz. Instituto Nacional de Controle de Qualidade em Saúde. Departamento de Química. Rio de Janeiro, RJ, Brasil.Universidade Federal Fluminense. Departamento de Geoquímica. Geoquímica Ambiental. Niterói, RJ, Brasil.Pontifícia Universidade Católica. LabSpectro. Rio de Janero, RJ, Brasil.Fundação Oswaldo Cruz, Laboratório de Experimentação Animal. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Nacional de Controle de Qualidade em Saúde. Departamento de Química. Rio de Janeiro, RJ, Brasil.As concentrações de vinte e cinco elementos (Al, As, Ba, Bi, Ca, Cd, Cr, Cu, Fe, Ga, K, Li, Mg, Mn, Mo, Na, Ni, Pb, Rb, Sb, Se, Sn, Sr, V e Zn) foram determinadas em três cogumelos comestíveis, Lentinula edodes (Shiitake), Pleurotus ostreatusi (Shimeji preto) e Pleurotus eryngii (Cardoncello) provenientes de Petrópolis, Rio de Janeiro, Brasil. As amostras foram coletadas durante o ano de 2010 e o preparo efetuado por secagem, trituração, pré-digestão ácida e mineralização em mufla. As técnicas analíticas utilizadas na determinação dos elementos foram a espectrometria de massa com plasma indutivamente acoplado e a absorção atômica com chama. Dois materiais de referência certificados, Apple Leaves e Mussel Tissue, foram utilizados para a avaliação do procedimento analítico e valores de recuperação em torno de 98 % foram obtidos. Os resultados demonstraram que os cogumelos estudados apresentam altos teores de Cu, Fe, K, Mg, Mn e Zn, contendo mais de 30% das quantidades recomendadas para ingestão diária desses nutrientes, conforme a legislação brasileira. Esses cogumelos possuem uma razão Na/K muito baixa e os níveis de alguns contaminantes, Cd, Pb e As, estão abaixo dos limites máximos permitidos pela legislação em vigorThe concentrations of twenty-five elements (Al, As, Ba, Bi, Ca, Cd, Cr, Cu, Fe, Ga, K, Li, Mg, Mn, Mo, Na, Ni, Pb, Rb , Sb, Se, Sn, Sr, V and Zn) were determined in three edible mushrooms, Shiitake (Lentinula edodes), Black Shimeji (Pleurotus ostreatusi) and Cardoncello (Pleurotus eryngyii) from Petrópolis, Rio de Janeiro, Brazil. Samples were collected along the year 2010 and their preparations were made after drying, milling, an acid pre-digestion and a decomposition procedure in a muffle furnace. The analytical techniques employed for the elements determination were Mass Spectrometry with Inductively Coupled Plasma and Flame Atomic Absorption Spectrometry. Two certified reference materials, Apple Leaves and Mussel Tissue, were used for the evaluation of the analytical procedure and recovery values around 98% were obtained. The results showed that the analyzed mushrooms have high levels of Cu, Fe, K, Mg, Mn and Zn containing more than 30% the recommended daily intake for these nutrients according to Brazilian legislation. These mushrooms presented a very low ratio Na/K. Regarding the levels of some contaminants, the mushrooms had concentrations of Cd, Pb and As below the recommended maximum limits allowed by Brazilian legislation

Dispersal of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) in an urban endemic dengue area in the State of Rio de Janeiro, Brazil

Submitted by Alexandre Sousa ([email protected]) on 2016-04-28T18:08:54Z No. of bitstreams: 1 Mem_Inst_Oswaldo_Cruz_98_191-198.pdf: 557218 bytes, checksum: c9b8201053c37cfc6e3ae559678c74fb (MD5)Approved for entry into archive by Alexandre Sousa ([email protected]) on 2016-04-28T18:21:33Z (GMT) No. of bitstreams: 1 Mem_Inst_Oswaldo_Cruz_98_191-198.pdf: 557218 bytes, checksum: c9b8201053c37cfc6e3ae559678c74fb (MD5)Made available in DSpace on 2016-04-28T18:21:33Z (GMT). No. of bitstreams: 1 Mem_Inst_Oswaldo_Cruz_98_191-198.pdf: 557218 bytes, checksum: c9b8201053c37cfc6e3ae559678c74fb (MD5) Previous issue date: 2003Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Rio de Janeiro, RJ, Brasil.Fundação Nacional de Saúde. Distrito Sanitário de Nova Iguaçu. Nova Iguaçu, RJ, Brasil.Fundação Nacional de Saúde. Distrito Sanitário de Nova Iguaçu. Nova Iguaçu, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Nacional de Controle de Qualidade em Saúde. Departamento de Química. Rio de Janeiro, RJ, Brasil.University of Florida. Florida Medical Entomology Laboratory. Florida, USA.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Rio de Janeiro, RJ, Brasil.Experimental releases of female Aedes (Stegomyia) aegypti and Aedes (Stegomyia) albopictus were performed in August and September 1999, in an urban area of Nova Iguaçu, State of Rio de Janeiro, Brazil, to estimate their flight range in a circular area of 1,600 m where 1,472 ovitraps were set. Releases of 3,055 Ae. aegypti and 2,225 Ae. albopictus females, fed with rubidium (Rb)-marked blood and surgically prevented from subsequent blood-feeding, were separated by 11 days. Rb was detected in ovitrap-collected eggs by atomic emission spectrophotometry. Rb-marked eggs of both species were detected up to 800 m from the release point. Eggs of Ae. albopictus were more numerous and more heterogeneously distributed in the area than those of Ae. aegypti. Eggs positively marked for Rb were found at all borders of the study area, suggesting that egg laying also occurred beyond these limits. Results from this study suggest that females can fly at least 800 m in 6 days and, if infected, potentially spread virus rapidl

Dispersal of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) in an urban endemic dengue area in the State of Rio de Janeiro, Brazil

Experimental releases of female Aedes (Stegomyia) aegypti and Aedes (Stegomyia) albopictus were performed in August and September 1999, in an urban area of Nova Iguaçu, State of Rio de Janeiro, Brazil, to estimate their flight range in a circular area of 1,600 m where 1,472 ovitraps were set. Releases of 3,055 Ae. aegypti and 2,225 Ae. albopictus females, fed with rubidium (Rb)-marked blood and surgically prevented from subsequent blood-feeding, were separated by 11 days. Rb was detected in ovitrap-collected eggs by atomic emission spectrophotometry. Rb-marked eggs of both species were detected up to 800 m from the release point. Eggs of Ae. albopictus were more numerous and more heterogeneously distributed in the area than those of Ae. aegypti. Eggs positively marked for Rb were found at all borders of the study area, suggesting that egg laying also occurred beyond these limits. Results from this study suggest that females can fly at least 800 m in 6 days and, if infected, potentially spread virus rapidly

Comparison of the nutritional and toxicological reference values of trace elements in edible marine fish species consumed by the population in Rio De Janeiro State, Brazil

Made available in DSpace on 2015-02-20T12:47:04Z (GMT). No. of bitstreams: 2 Tox_Report_1_353-359.pdf: 522596 bytes, checksum: d2accb8a34a434e5e5f641561e1c5ba3 (MD5) license.txt: 1914 bytes, checksum: 7d48279ffeed55da8dfe2f8e81f3b81f (MD5) Previous issue date: 2014Fundação Oswaldo Cruz. Instituto Nacional de Controle de Qualidade em Saúde. Departamento de Química. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Nacional de Controle de Qualidade em Saúde. Departamento de Química. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Nacional de Controle de Qualidade em Saúde. Departamento de Química. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Escola Nacional de Saúde Pública. Centro de Estudos em Saúde do Trabalhador e Ecologia Humana. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Escola Nacional de Saúde Pública. Centro de Estudos em Saúde do Trabalhador e Ecologia Humana. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Nacional de Controle de Qualidade em Saúde. Departamento de Química. Rio de Janeiro, RJ, Brasil.The present study estimated the human daily and weekly intake of inorganic elements due to consumption of fish in Rio de Janeiro state and the associated potential health risks posed by some toxic elements. All samples analyzed had values of Cd and Pb below the Maximum Tolerable Limits of 3.0 mg kg−1 for Pb and 1.0 mg kg−1 for Cd; only Mugil cephalus, Cynoscion leiarchus and Caranx crysos had As concentrations below 1 mg kg−1, maximum limit established by Brazilian legislation. The higher values of Cd and Pb correspond to 0.22%of PTWI and the higher value of As corresponds to 8.6% of PTWI. None of the studied species howed values higher than PTWI. The higher values of Cu EDI found in Pomatomus numida correspond to 33.3% of RDA; Fe in Salmo salar and Genypterus brasiliensis corresponds to 4.3%of EDI; Mn in Sardinella brasiliensis corresponds to 7.4% of EDI; Zn in S. salar corresponds to 13.2% of EDI and Se in S. salar corresponds to 20.6% of EDI. Some species can be a good source of inorganic elements. For risk assessment, it is important to assess specific eating habits of each region to avoid underestimating the data