2013
DOI: 10.5335/ciatec.v5i1.3222
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Obtenção De Leite Com Baixo Teor De Lactose Por Processos De Separação Por Membranas Associados À Hidrólise Enzimática

Abstract: RESUMOMuitos indivíduos deixam de consumir leite pelo fato de haver alguma restrição, normalmente, por dois motivos: intolerância à proteína ou intolerância à lactose. Esta última atinge quase a metade da população mundial. O objetivo deste trabalho foi avaliar um processo híbrido combinando ultrafiltração (UF), nanofiltração (NF) e hidrólise enzimática para a obtenção de leite pasteurizado com reduzido teor de lactose. Leite desnatado foi ultrafiltrado em unidade piloto de filtração por membranas, separando d… Show more

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Cited by 10 publications
(12 citation statements)
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“…Thus, the samples were submitted to room temperature (25°C) for 1 hour or to refrigeration temperature (6°C) for 15 hours. The last period is usual for the galactase digestion of lactose in ‘zero lactose’ milk process [19]. The reaction was performed without pH correction or additions other than the 120 μL of a purified enzyme preparation (100 μg of Bg10 in Tris-HCl 20 mM, NaCl 200 mM, glycerol 5%, pH 7 buffer) for each sample with 1 mL volume.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Thus, the samples were submitted to room temperature (25°C) for 1 hour or to refrigeration temperature (6°C) for 15 hours. The last period is usual for the galactase digestion of lactose in ‘zero lactose’ milk process [19]. The reaction was performed without pH correction or additions other than the 120 μL of a purified enzyme preparation (100 μg of Bg10 in Tris-HCl 20 mM, NaCl 200 mM, glycerol 5%, pH 7 buffer) for each sample with 1 mL volume.…”
Section: Resultsmentioning
confidence: 99%
“…However, the application of ß-glucosidases could be greatly extended by using many enzyme activities to modify sugars in food products, such as an enzyme’s lactase activity. The lactase activity is important to the food market for products with low lactose content, as half of the world’s population suffers from malabsorption or lactose intolerance [1921]. Actually, despite the fact that some ß-glucosidases are completely suitable for this process, low-lactose or lactose-free milk and their derivatives are usually prepared using ß-galactosidases, which are generally inhibited during the reaction as the glucose concentration increases [22].…”
Section: Introductionmentioning
confidence: 99%
“…Se gundo Faedo et al (2013), a vantagem do método de hidrólise enzimática é que a reação se processa a temperatura relativamente baixa, numa faixa que pode variar de 4 ºC a 40 ºC, sendo a temperatura ótima entre 30 ºC a 40 ºC.…”
Section: Introductionunclassified
“…No entanto, é importante salientar que a produção da enzima não é induzida pelo consumo de lactose (LONGO, 2006;FOOD INGREDIENTS, 2010;GASPARIN;TELES;ARAÚJO, 2010;FAEDO et al, 2013).…”
Section: Introductionunclassified