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Search Results: 1 - 10 of 6778 matches for " Fernanda Meneghello Delvivo "
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Imobiliza o da pancreatina em carv o ativado e em alumina para o preparo de hidrolisados de soro de leite = Immobilization of pancreatin in activated carbon and in alumina for preparing whey hydrolysates
Viviane Dias Medeiros Silva,Letícia Missagia De Marco,Fernanda Meneghello Delvivo,José Virgílio Coelho
Acta Scientiarum : Health Sciences , 2005,
Abstract: Tendo como objetivo a redu o de custos do processo de fabrica o dehidrolisados protéicos, estudou-se neste trabalho a imobiliza o da pancreatina, por adsor o, em carv o ativado e em alumina. Para isso, foram testadas diferentes condi es de imobiliza o (30, 60 e 90min a 25°C, e 12h a 5°C). Para verificar a taxa de imobiliza o, determinou-se indiretamente a enzima n o adsorvida nos suportes. Ao se utilizar o carv o ativado, n o foi observada diferen a significativa entre as condi es testadas, tendo-se obtido 100% de imobiliza o enzimática. Para a alumina, a melhor condi o foi a de 90min, na qual se obteve 37% de imobiliza o. A medida do grau de exposi o da fenilalanina, pela espectrofotometria derivada segunda, foi empregada para a determina o da estabilidade operacional da enzima, tendo sido mostrado que a imobiliza o em carv o ativado e emalumina permitiu a reutiliza o da pancreatina por até 5 vezes e 2 vezes, respectivamente. Immobilization of pancreatin in activated carbon and in alumina was studied for producing protein hydrolysates, in order to reduce the process costs. Different immobilization conditions were tested (30, 60 and 90min at 25°C, and 12h at 5°C). For estimating the immobilization rate the amount of the non-adsorbed enzyme on the supports was indirectly determined. When activated carbon was used, no significant difference was observed among the tested conditions, obtaining 100% of enzymatic immobilization. In case of alumina, the best condition showed to be the 90min treatment which produced 37% of immobilization. The evaluation of the degree of exposition ofphenylalanine, by second derivative spectrophotometry, was used for the determination of the enzyme operational stability, and showed that the immobilization in activated carbon and in alumina allowed the reusability of the pancreatin for 5 times and 2 times,respectively.
Effect of Adsorption Medium, Hydrolytic Parameters and Ultrafiltration on the Phenylalanine Removal from Pancreatic Whey Hydrolysates
Fernanda M. Delvivo,Claudia R. Vieira,Eliza A.R. Biasutti,Michely Capobiango
American Journal of Food Technology , 2006,
Abstract: With the aim of producing dietary supplements for phenylketonurics, using whey hydrolysates as protein sources, the effect of some procedures over phenylalanine (Phe) removal was evaluated. Twelve whey hydrolysates were prepared by the action of a pancreatin, in three enzyme:substrate (E:S) ratios and two temperatures. Half of the samples were submitted to the ultrafiltration (UF) through 10,000 Da cut-off membranes. The activated carbon and the polymeric adsorbent XAD-4 were used for removing Phe from the hydrolysates. The results showed that the activated carbon was more advantageous than the resin, since it led to the lowest final Phe content (2.3 to 38.2 mg Phe/100 g hydrolysate). The effect of E:S ratio, temperature and ultrafiltration was also evaluated. The least final amount of Phe was obtained in absence of UF for three situations: E:S = 0.01% and 25°C, E:S = 0.1% and 50°C, E:S = 1.0% and 50°C.
Cirrosis hepática en el ni o
JULIO MENEGHELLO
Revista chilena de pediatría , 1944,
Abstract:
Disostosis Cleido-Craneana
JULIO HASBUN,JULIO MENEGHELLO
Revista chilena de pediatría , 1944,
Abstract:
Cortisona en el tratamiento de algunas enfermedades de la piel en el ni o
J MENEGHELLO,J ROSSELOT
Revista chilena de pediatría , 1952,
Abstract:
Bronconeumonia en el lactante distrófico
JULIO MENEGHELLO,JORGE ROSSELOT
Revista chilena de pediatría , 1948,
Abstract:
Síndrome de Schoenlein Henoch
RODOLFO BURDACH,JULIO MENEGHELLO
Revista chilena de pediatría , 1952,
Abstract:
Enfisema buloso en la infancia
JULIO HASBUN,JULIO MENEGHELLO
Revista chilena de pediatría , 1948,
Abstract:
Neumonia y glomérulo-nefritis aguda en el ni o
JULIO MENEGHELLO,HERMANN NIEMEYER
Revista chilena de pediatría , 1946,
Abstract:
Tres casos de artritis reumatoide
JULIO MENEGHELLO,JULIO GUASCH
Revista chilena de pediatría , 1944,
Abstract:
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