24 documents found, page 1 of 3
Atividade hemaglutinante em sementes de dioclea rostrata BENTH
Grangeiro, T. B.; Oliveira, I. T. A. de; Moreira, R. A.; Cavada, B. S.Seeds of Dioc/ea rostrata Benth. Have a lectin which is best extracted with Na-acetate buffer at pH 4.0 and that is selectively adsorbed in a Sephadex G-50 matrix, yielding a protein fraction of high hemagg lutinating titre against rabbit erythrocytes. I t also agglu tinates sheep, and human cells inespecifically. Its hemagglutinating activity is inhibited by glucose fructose, mannose and O-methyl-D-mannopyrano...
Estudos preliminares de uma lecflna de sementes de parkia platycefhala BENTH.
Grangeiro, T. B.; Oliveira, J. T. A. de; Moreira, R. A.; Cavada, B. S.Seecis af Parkia platycephala Benth. have a lectin which is best extracted at pH 4,0 and partially purified using a Séphadex G-50 column as an affinity adsorbent. The lectin .agglutinates rabbit erythrocytes but not those of cow, sheep, chicken or human D-glucose, D-mannose, D-fructose and derivatives act as inhibitors of the lectin with o-methyl- glucopyranoside and O-methyl-mannopyranoside being the most pote...
In vivo protective effect of the lectin from Canavalia brasiliensis on BALB/c m...
Barral-Netto, Manoel; Sohsten, R. L. Von; Teixeira, M.; Santos, Washington Luis Conrado dos; Pompeu, M. L.; Moreira, R. A.; Oliveira, J. T. A.Texto completo. Acesso restrito. p. 237–250; Submitted by Santiago Fabio (fabio.ssantiago@hotmail.com) on 2013-09-09T20:25:01Z No. of bitstreams: 1 66666666666666666.pdf: 979575 bytes, checksum: dfb8ac628ceaf8c94cb72e73fbaa01d7 (MD5); Made available in DSpace on 2013-09-09T20:25:02Z (GMT). No. of bitstreams: 1 66666666666666666.pdf: 979575 bytes, checksum: dfb8ac628ceaf8c94cb72e73fbaa01d7 (MD5) Previous issue d...
In vivo protective effect of the lectin from Canavalia brasiliensis on BALB/c m...
Barral-Netto, Manoel; Sohsten, R. L. Von; Teixeira, M.; Santos, Washington Luis Conrado dos; Pompeu, M. L.; Moreira, R. A.; Oliveira, J. T. A.Texto completo: acesso restrito. p.237–250; Submitted by Suelen Reis (suelen_suzane@hotmail.com) on 2013-02-15T16:22:53Z No. of bitstreams: 1 Barral.pdf: 1666412 bytes, checksum: 9ad16b3ea81362338e178cbdbb4c83a7 (MD5); Approved for entry into archive by Fatima Cleômenis Botelho Maria (botelho@ufba.br) on 2013-02-19T16:26:27Z (GMT) No. of bitstreams: 1 Barral.pdf: 1666412 bytes, checksum: 9ad16b3ea81362338e178cb...
New edible coatings composed of galactomannans and collagen blends to improve t...
Lima, Álvaro M.; Cerqueira, M. A.; Souza, B. W. S.; Santos, Ed Carlos M.; Teixeira, J. A.; Moreira, R. A.; Vicente, A. A.The objective of this work was to produce new edible coatings, based on a mixture of galactomannans from novel sources (seeds of Adenanthera pavonina and Caesalpinia pulcherrima), collagen and glycerol, and to determine their influence in gas transfer rates when they are applied on mangoes and apples. The first part of the work consisted in obtaining coating solutions with the convenient values of wettability f...
Functional polysaccharides as edible coatings for cheese
Cerqueira, M. A.; Lima, A. M. P.; Souza, B. W. S.; Teixeira, J. A.; Moreira, R. A.; Vicente, A. A.The objective of the present study was to apply the polysaccharides from different nontraditional sources for cheese coatings. Chitosan, galactomannan from Gleditsia triacanthos, and agar from Glacilaria birdiae were tested, with different formulations and with the addition of plasticizer and corn oil. The surface properties of the cheese and the wetting capacity of the coatings on the cheese were determined. T...
Suitability of novel galactomannans as edible coatings for tropical fruits
Cerqueira, M. A.; Lima, A. M. P.; Teixeira, J. A.; Moreira, R. A.; Vicente, A. A.The main objective of this work was to determine the optimal composition of edible coatings in view of their application to extend the shelf life of several tropical fruits. Coatings constituted by galactomannans from different sources (Caesalpinia pulcherrima and Adenanthera pavonina) and glycerol were characterized as coatings for five tropical fruits: acerola (Malpighia emarginata), cajá (Spondias lutea), ma...
Suitability of novel galactomannans as edible coatings for tropical fruits
Lima, Á.; Cerqueira, Miguel Ângelo Parente Ribeiro; Souza, B.; Teixeira, J. A.; Monteiro-Moreira, A. C. O.; Vicente, A. A.; Moreira, R. A.Great losses in the quality of fresh fruits occur between their harvest and consumption, and one of the most important drawbacks in fruit distribution chains is their short shelf life. The semipermeable barrier provided by edible coatings is aimed to extend shelf life by reducing moisture migration, gas exchange, respiration and oxidative reaction rates, as well as suppress physiological disorders on fresh-cut ...
Extraction, purification and characterization of galactomannans from non-tradit...
Cerqueira, M. A.; Pinheiro, A. C.; Souza, B. W. S.; Lima, A. M. P.; Ribeiro, Clara; Miranda, Cândida; Teixeira, J. A.; Moreira, R. A.This work presents a methodology for the extraction of galactomannans from seeds of four different species of Leguminosae (Adenanthera pavonina, Caesalpinia pulcherrima, Gleditsia triacanthos and Sophora japonica) to be used e.g. in the food and biomedical industries. The galactomannans were obtained by aqueous extraction followed by a precipitation with ethanol. This methodology is simpler and easier to perfor...
Galactomannans/collagen edible coatings in gas transfer rates in fruits
Lima, Á.; Cerqueira, Miguel Ângelo Parente Ribeiro; Souza, B.; Vicente, A. A.; Teixeira, J. A.; Monteiro-Moreira, A. C. O.; Moreira, R. A.One of the most important problems in fruit conservation is their short shelf life. Fruits are living organisms which continue to respire after harvesting. Shelf-life can be extended by reducing respiration rates. This is done by controlling factors such temperature, relative humidity, gas composition (ethylene, O 2 and CO2) and light. An important strategy to control some of these factors is the use of modifie...