Título:	Activity of beta-glucosidase and levels of isoflavone glucosides in soybean cultivars affected by the environment.
Autoria:	CARRAO-PANIZZI, M.C. BORDINGNON, J. R.
Ano de publicação:	2000
Referência:	Pesquisa Agropecuaria Brasileira, Brasilia, v.35, n.5, p.873-878, maio 2000.
Conteúdo:	The enzyme B-glucosidade hydrolyses the isoflavone glucosides developing aglycones, which are compounds with anticancer effects, that are also related with the astringency observed in soybean flavor. Due to the importance of this enzyme, a study was carried out to determine B-glucosidade activity in soybean (Glycine max (L.) Merrill) cultivars with different contents of isoflavone glucosides (enzyme substrate). The enzyme activity was determined in 51 soybean cultivars sowed in Londrina (latitude 23S), in Parana State, Brazil, and in the cultivar IAS 5 from soybean production regions of different Brazilian states. Among the cultivars, a range of variability of 176.1 to 96.3 units of enzyme activity (cultivars IAC-2 and Embrapa 2, respectively) was observed. A significant variability among cultivars could suggest genetic differences. In the states of Rio Grande do Sul, Parana and Mato Grosso do Sul, the cultivar IAS 5 presented similar average of B-glucosidase activity: 132.1, 131.9 and 132.5 units, respectively. Among locations in the states, the cultivar IAS 5 presented a variability for enzyme activity from 138.8 to 124.8 units, which were statistically different. In spite of statistics, the numerical values were not too different to assume that environmental conditions affected enzyme activit. A non-significative correlation for isoflavone glucoside concentrations and enzyme activity was observed among cultivars.
Thesagro:	Glycine Max Sabor Soja
Palavras-chave:	Efeito ambiental Agliconas Isoflavonoides glicosidios Soybean Environmental effect Aglycones Flavour Isoflavone glucosides
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPSO)