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| Toledo, Vagner de Alencar Arnaut de; UEM; Oliveira, Arildo José Braz de; UEM; Ruvolo-Takasusuki, Maria Claudia Colla; UEM; Mitsui, Marina Hitumi; UEM; Vieira, Renata Eunice; UEM; Kotaka, Carolina Satie; UEM; Chiari, Wainer César; UEM; Gobbi Filho, Lucílio; UEM; Terada, Yoko; UEM. |
| Siratro (Macroptilium atropurpureum Urb.) is a forager with high nutritional values and excellent palatability, and its phenology is almost unknown. Aiming at improving the knowledge and understanding siratro pollinators and floral biology, the total sugar contents on its flowers nectar and the identification of these sugars were determined by, respectively, spectrophotometry and chromatography. The total sugar concentration varied from a maximum of 1.36 and 3.23 mg/flower and a minimum of 0.19 and 0.42 mg/flower. Results showed that the total sugar concentration is high at 8:30 a.m., when the flowers open, and varies slightly during the time the flowers keep open. The variations can be related to the number of insects that visit the flowers, especially... |
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Palavras-chave: 5.04.03.00-1 Nutrição e Alimentação Animal Macroptilium atropurpureum; Fabaceae; Siratro; Phenology; Spectrophotometric analysis; Nectar 5.04.03.00-1 Nutrição e Alimentação Animal. |
| Ano: 2005 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/1248 |
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| Zanoni,Thalita Boldrin; Cardoso,Arnaldo Alves; Zanoni,Maria Valnice Boldrin; Ferreira,Antonio Aparecido Pupim. |
| Indigo carmine forms a stable complex with different ions, and the stability constant of the complexes were evaluated as log K equal to 5.75; 5.00; 4.89 and 3.89 for complexes with Cu(II), Ni(II), Co(II) and Zn(II) ions, respectively, in 0.1 mol L-1 carbonate buffer solution at pH 10. The interaction between Cu(II) ions and indigo carmine (IC) in alkaline medium resulted in the formation of the Cu2(IC) complex, measured by the spectrophotometric method, with a stoichiometric ratio between indigo carmine and metal ions of 2:1 (metal-ligand). The reported method has also been successfully tested for determination of copper in pharmaceutical compounds based on copper-gluconate without pre-treatment. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Metal sequestration; Indigo carmine; Food dye/complexation; Spectrophotometric analysis; Copper/determination. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502010000400014 |
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