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Extraction, purification and some partial characterization of Ó-amylase inhibitors from wheat lapar 28-igapó / Extracción, purificación y algunas características parciales de los inhibidores de Ó-amilasa del trigo 28-igapó
Arch. latinoam. nutr ; 45(4): 310-6, dic. 1995. ilus, tab
Article em En | LILACS | ID: lil-199270
Biblioteca responsável: VE1.1
RESUMEN
Ó-Amylase inhibitors wheat (Triticum aestivum) cultivar lapar 28-Igapó were extrated with water in a 110 (wv) ratio and precipitated with ammonium sulfate between 20-20 por ciento saturation, followed by DEAE and CM-cellulose chromatography. One inhibitor was purified and designated as CMC-IB, and had electrophoretic mobilities of 0.23 and 0.54 in alkaline and acidic conditions, respectively. This inhibitor was 750 times more active on human salivary Ó-amylase (HSSA) than porcine pancreatic Õ-amylase (PPA). The preincubation time required for maximum complexation with HSA was 20 minutes and optimum pH of inhibition was 7.5. The inhibitor CMC-IB was stable at 0ºC and maintained 50 por ciento of inhibotory activity against HSA, when incubated at 98ºC for one hour
Assuntos
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Índice: LILACS Assunto principal: Triticum / Amilases Limite: Female / Humans / Male Idioma: En Revista: Arch. latinoam. nutr Assunto da revista: Bioqu¡mica / Educa‡Æo Alimentar e Nutricional / Fen“menos Fisiol¢gicos da Nutri‡Æo / Microbiologia de Alimentos / NUTRICAO Ano de publicação: 1995 Tipo de documento: Article
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Índice: LILACS Assunto principal: Triticum / Amilases Limite: Female / Humans / Male Idioma: En Revista: Arch. latinoam. nutr Assunto da revista: Bioqu¡mica / Educa‡Æo Alimentar e Nutricional / Fen“menos Fisiol¢gicos da Nutri‡Æo / Microbiologia de Alimentos / NUTRICAO Ano de publicação: 1995 Tipo de documento: Article