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PEREIRA,LUCILENE S.; GOMES,VALDIRENE M.; FERNANDES,KÁTIA V. S.; SALES,MAURÍCIO P.; XAVIER-FILHO,JOSÉ. |
Analysis of the latex from Manihot glaziovii showed the presence of various enzymatic and inhibitory activities. The latex also presented an inhibitory effect on the development of cowpea weevil (Callosobruchus maculatus) in an artificial seed system and on the development, in an in vitro assay, of phytopathogenic fungi Colletotrichum gloesporioides, Fusarium solani and Macrophomina phaseolina. These results suggest the presence of substances, some of them of protein nature, involved in plant defense mechanisms in this exudation product. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Latex chitinase < FONT FACE=Symbol> B< /FONT> -1 3-glucanase proteinase inhibitors defense proteins. |
Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041999000100005 |
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Lima,Teresa Cristina S. de; Grisi,Breno M.; Bonato,M. Christina M.. |
In this investigation, a sugarcane agroecosystem at a coastal tableland, in the northeast of Brazil, was screened to obtain bacteria strains able to synthesize poly-<FONT FACE="Symbol">b</font>-hydroxyalkanoates (PHA), using sucrose as the main carbon source. The potential to synthesize PHA was tested qualitatively by Sudan Black staining of colonies growing in different carbon sources: sucrose, glucose, fructose, propionate and cellulose. In a typical sugarcane crop management system, the plantation is burned before harvesting and vinasse, a byproduct of alcohol production, is used in a fertirrigation system causing, probably, selective pressures on the microbiota of natural environments. Eightytwo bacteria strains, belonging to 16 different... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil bacteria poly-< FONT FACE=Symbol> B< /font> -hydroxyalkanoate PHA resistance to antibiotics sugarcane agroecosystem vinasse. |
Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000300006 |
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Cruz,Rubens; Cruz,Vinícius D'Arcádia; Belote,Juliana Gisele; Khenayfes,Marcelo de Oliveira; Dorta,Claudia; Oliveira,Luiza Helena dos Santos. |
<FONT FACE="Symbol">b</font>-Galactosidase or <FONT FACE="Symbol">b</font>-D-galactoside-galactohydrolase (EC. 3.2.1.23) is an important enzyme industrially used for the hydrolysis of lactose from milk and milk whey for several applications. Lately, the importance of this enzyme was enhanced by its galactosyltransferase activity, which is responsible for the synthesis of transgalactosylated oligosaccharides (TOS) that act as functional foods, with several beneficial effects on consumers. Penicillium simplicissimum, a strain isolated from soil, when grown in semi-solid medium showed good productivity of <FONT FACE="Symbol">b</font>-galactosidase with galactosyltransferase activity. The optimum pH for hydrolysis was in the... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: < FONT FACE=Symbol> B< /font> -Galactosidase galactosyltransferase galactooligosaccharides lactose prebiotic effect. |
Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000300014 |
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