Materias
(58)
Article : documento electrónico
KADAFFI LEÓN ARCE ORTIZ, Autor ; KAREN JOHANA ORTEGA VILLALBA, Autor ; CLAUDIA ISABEL OCHOA-MARTINEZ, Autor ; CARLOS VÉLEZ PASOS, Autor |Los recubrimientos y películas elaborados lactosuero (WPI) y quitosano (CHI) son conocidos por ser antifúngicos y por ser barrera para la transferencia de vapor de agua, logrando un efecto en la conservación de frutas. El objetivo de este trabaj[...]texto impreso
The use of meat myofibrillar proteins for edible film production involves initially the extraction of the macromolecule, since it is not commercially available. Thus, the objectives of this work were the extraction and characterization of bovine[...]texto impreso
ANDERSON, AARON S. ; DATTELBAUM, ANDREW M. ; MONTAÑO, GABRIEL A. ; PRICE, DOMINIQUE N. ; SCHMIDT, JURGEN G. ; MARTINEZ, JENNIFER S. ; GRACE, W. KEVIN ; GRACE, KAREN M. ; SWANSON, BASIL I.We report a general procedure to prepare functional organic thin films for biological assays on oxide surfaces. Silica surfaces were functionalized by self-assembly of an amine-terminated silane film using both vapor- and solution-phase depositi[...]texto impreso
Biodegradable films from many protein sources have in recent decades attracted a lot of attention for their potential use in food protection because they have several advantages over synthetic films, including those related to the environment. T[...]texto impreso
The influence of glycerol concentration on some physical properties such as the thermal, mechanical, water solubility, hydrophilicity and water barrier properties of feather keratin films was studied. Feather keratin was extracted with an aqueou[...]texto impreso
Research on edible and biodegradable films had been promoted recently because of environmental concerns. The use of these materials for packaging applications is conditioned by their functional properties, which are influenced by many factors, i[...]texto impreso
Proteins are considered potential material in natural films as alternative to traditional packaging. When gamma radiation is applied to protein film forming solution it resulted in an improvement in mechanical properties of whey protein films. T[...]texto impreso
The effect of deacetylated xanthan gum, additives (sucrose, soybean oil, sodium phosphate and propylene glycol) and pH modifications on mechanical properties, hydrophilicity and water activity of cassava starch–xanthan gum films has been studied[...]texto impreso
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This work aimed to develop an edible antimicrobial coating based on a starch–chitosan matrix to evaluate its effect on minimally processed carrot by means of microbiological analyses. Coatings based on 4% yam starch (w/w) + 2% glycerol (w/w) and[...]texto impreso
Yam starch films were produced by thermal gelatinization of starch suspensions using different starch and glycerol concentrations and were compared to control samples without glycerol. Films were characterized by polarized light microscopy, scan[...]texto impreso
Xanthan gum deacetylation, additives (sucrose, soybean oil, sodium phosphate and propylene glycol) and pH modifications influence on cassava starch-based films microstructure and color has been studied. X-ray diffraction and microscopic analysis[...]texto impreso
Studies on the moisture sorption characteristics of poly(vinyl alcohol)/starch blends for water activity (aw) values of 0.1– 0.9 were performed at 27°C. The equilibrium moisture content at different aw values was used to fit different sorption i[...]texto impreso
A indústria de processamento de aves produz uma grande quantidade de penas que são usualmente utilizadas na formulação de ração animal. A queratina é uma proteína fibrosa encontrada neste tipo de resíduo, a qual pode ser classificada como um pol[...]Article : documento electrónico
ESCOBAR, DANIELA, Autor ; SALA, ANGELINA, Autor ; MÁRQUEZ, ROSA, Autor ; HARISPE, RODRIGO, Autor |Dentro INNOTEC (No. 4, dic. 2009)Las películas se elaboraron a partir de soluciones de aislado de proteínas de suero lácteo (WPI), utilizando glicerol como plasticante y con el agregado o no de sorbato de potasio como conservador. Los métodos utilizados fueron el de moldeo por [...]documento electrónico
ESCOBAR, DANIELA, Autor ; SALA, ANGELINA, Autor ; SILVERA, CARLOS, Autor ; HARISPE, RODRIGO, Autor ; MÁRQUEZ, ROSA, Autor | Montevideo [URUGUAY] : Laboratorio Tecnológico del Uruguay (LATU) | 2010Las películas se elaboraron a partir de soluciones de aislado de proteínas de suero lácteo (WPI), utilizando glicerol como plastificante y con el agregado o no de sorbato de potasio como conservador. Los métodos utilizados fueron el de moldeo po[...]texto impreso
As proteínas miofibrilares são materiais promissores na tecnologia de filmes comestíveis. Os objetivos deste trabalho foram verificar a influência do tipo de ácido sobre a permeabilidade ao vapor de água de biofilmes à base de proteínas miofibri[...]texto impreso
CARVALHO, R. A., Autor ; SOBRAL, PAULO JOSE DO AMARAL, Autor ; FAVARO-TRINDADE, C. S., AutorEdible films are thin materials based on biopolymers from renewable sources, and plasticizers. Normally plasticizers are colorless low molecular components. The use of natural pigments may be valuable for the edible film technology. The choice o[...]texto impreso
The short-term stability and the water sorption of films prepared from binary mixtures of chitosan and native amylose maize starch (Hylon VII) were evaluated using free films. The aqueous polymer solutions of the free films contained 2% (w/w) fi[...]texto impreso
A elaboração de filmes comestíveis à base de biopolímeros implica conhecimento das propriedades físico-químicas da macromolécula. Os objetivos deste trabalho foram a descrição de um método de preparo de proteínas miofibrilares de tilápia-do-nilo[...]texto impreso
GROSSO, C. R. F., Autor ; CHAMBI, M., AutorMechanical and permeability properties of plant tissues are mainly dependent on cell walls that show in their composition polysaccharides (cellulose, glucomannans, and pectins) and differente proteins standing out protein rich in proline.texto impreso
The improvement of the safety and quality of minimally processed foods is of major interest to both the consumer and the food industry and is the topic of an EU-sponsored research project with nine international partners. The project optimizes e[...]texto impreso
A utilização de proteínas sarcoplasmáticas junto de proteínas miofibrilares pode ser interessante na tecnologia de filmes comestíveis, pois eliminaria o processo de lavagem do músculo no preparo das proteínas. O objetivo deste trabalho foi estud[...]texto impreso
Apresenta-se neste trabalho um processo brando de extração de queratina de penas de frango em solução aquosa contendo uréia, 2-mercaptoetanol e um surfactante (pH 9,0). Fforam realizadas as determinações das massas molares, do perfil de aminoáci[...]texto impreso
Effects of plasticizers (glycerol, sorbitol, and 1:1 mixture of glycerol and sorbitol) on moisture sorption characteristics of hydrophilic soyprotein isolate (SPI) films were investigated at three levels of plasticizer concentration (0.3, 0.5, a[...]