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| Melo,V.M.M.; Fonseca,A.M.; Vasconcelos,I.M.; Carvalho,A.F.F.U.. |
| The antimicrobial, hemagglutinating and toxic activities of the purple fluid of the sea hare Aplysia dactylomela are described. Intact or dialyzed purple fluid inhibited the growth of species of Gram-positive and Gram-negative bacteria and the action was not bactericidal but bacteriostatic. The active factor or factors were heat labile and sensitive to extreme pH values. The fluid preferentially agglutinated rabbit erythrocytes and, to a lesser extent, human blood cells, and this activity was inhibited by the glycoprotein fetuin, a fact suggesting the presence of a lectin. The fluid was also toxic to brine shrimp nauplii (LD50 141.25 µg protein/ml) and to mice injected intraperitoneally (LD50 201.8 ± 8.6 mg protein/kg), in a dose-dependent fashion. These... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aplysia; Antimicrobial; Purple fluid; Toxicity; Hemagglutinating activity. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000600010 |
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| Mikcha,Jane M.G.; Ferreira,Antonio J. Piantino; Ferreira,Claudete S. Astolfi; Yano,Tomomasa. |
| Twenty-five strains of Salmonella enterica serovar Enteritidis isolated from different sources were examined for hemagglutinating activity. Bacteria cultured in different media induced hemagglutination of human erythrocytes, but no reaction was observed with erythrocytes from other animal species. The hemagglutinating expression activity was better for cultures on CFA agar at 37ºC than other conditions examined. The hemagglutination was inhibited by D-mannose, D-mannitol, melibiose, D-raffinose, L-rhamnose and sucrose. The absence of cell-surface appendages in electron microscope examinations suggested a nonfimbrial hemagglutinin. The data suggest that Salmonella Enteritidis produces nonfimbrial mannose-sensitive hemagglutinin, specific for human... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salmonella Enteritidis; Hemagglutinating activity; Mannose-sensitive hemagglutinin; Nonfimbrial hemagglutinin. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000100008 |
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| Siqueira,Beatriz dos Santos; Soares Júnior,Manoel Soares; Fernandes,Kátia Flávia; Caliari,Márcio; Damiani,Clarissa. |
| Pequi peel comprises 76% of the whole fruit and it is discarded during consumption. Thus, pequi peel has been considered a solid residue, although it has potential for use in various applications. Limitations in the use of this material are mainly due to the lack of information of its nutritional composition, especially about the toxic or antinutritional factors. Soaking is often used to prepare complementary foods and has been reported to be beneficial for enhancing nutritive value. The effect of soaking on the nutritional quality of pequi peel flour was determined by measuring changes in chemical composition, antinutritional factors, total phenols and in vitro protein and starch digestibility. The results showed that 24 h of maceration increases the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytates; Trypsin inhibitors; Hemagglutinating activity. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612013000300018 |
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