Pectic Enzyme
Mostrando 1-12 de 46 artigos, teses e dissertações.
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1. Mechanism of firmness loss in guava cv. Pedro Sato during ripening at room temperature
Abstract Guava (Psidium guajava L.) is fruit with very short shelf life due to associated with the loss of firmness in the pulp and information on the activity of enzymes that degrade pectic substances, as well as the amount of pectin, is very contradictory and not clearly defined. This work showed that the firmness of the fruit decreased sharply on the firs
Food Sci. Technol. Publicado em: 18/12/2017
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2. Utilization of orange bagasse and molokhia stalk for production of pectinase enzyme
Studies were conducted on the production and extraction of exo-polygalacturonase (PG) in solid-state fermentation (SSF) using orange bagasse (Ob) and molokhia stalks (Ms) as a new solid support by Penicillium pinophlilum Hedg 3503 NRRL. The parameters affecting PG production under SSF were optimized. The maximum PG activity of ~ 3270 U/ g dry solid substrate
Braz. J. Chem. Eng.. Publicado em: 2013-09
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3. Identificação molecular e produção de pectinases por isolados de Cladosporium cladosporioides (Fres.) de Vries / Molecular identification and production pectinase by isolates Cladosporium cladosporioides (Fres.) de Vries
The enzymes market has grown considerably in recent years. These enzymes play an important role in various industries, mainly in the food industry. Special attention has been given to the search for alternatives that reduce production costs and developing processes that will not harm the environment. Disposal of waste is a major problem faced by many agribus
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/08/2011
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4. Biotechnological potential of alternative carbon sources for production of pectinases by Rhizopus microsporus var. rhizopodiformis
Fungi collected from Brazilian soil and decomposing plants were screened for pectinase production. R. microsporus var. rhizopodiformis was the best producer and was selected to evaluate the pectic enzyme production under several nutritional and environmental conditions. The pectinase production was studied at 40ºC, under 28 carbon sources-supplemented mediu
Brazilian Archives of Biology and Technology. Publicado em: 2011-02
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5. Utilização de resíduos agroindustriais para a produção de proteases pelo termofílico Bacillus sp em fermentação submersa: otimização do meio de cultura usando a técnica de planejamento experimental
Thermophilic Bacillus sp. SMIA-2, produced protease when grown on apple pectic, whey protein and corn step liquor medium, whose concentration was varied from 3 to 10 gL-1, according to the central composite design 2³. The experiments were conducted in shaker, at 50 °C, 150 rpm and initial pH 6.5. The results revealed that the culture medium affected both,
Química Nova. Publicado em: 2010
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6. Enzimas pectinolíticas : seleção de linhagens fúngicas produtoras, caracterização e aplicação em processos da indústria de alimentos
In this work, fungus samples isolated from decomposing vegetables were tested with respect to their capacity of producing pectinases to be applied to the enzymatic treatment of apple and bilberry juices. Taking in account the secretion of endo-polygalacturonase (endo-PG), two isolates which were identified and named Aspergillus niger LB23 e Aspergillus fumig
Publicado em: 2010
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7. Caracterização funcional de uma xiloglucano galactosiltransferase de Eucalyptus grandis e uma ramnose sintase de Arabidopsis thaliana: Efeitos sobre a estrutura e composição da parede celular primária / Functional characterization of a xyloglucan galactosyltransferase of Eucalyptus grandis and a rhamnose synthase of Arabidopsis thaliana: Effects upon the structure and composition of the primary cell wall
The plant cell wall has been associated with several important biological functions. It surrounds the plant, protecting it against mechanical injuries, biotic and abiotic stresses. In addition, plant cell walls determine cell shape and growth rates. The main constituents of plant cell walls are: cellulose, hemicellulose, pectine, lignin and proteins, which v
Publicado em: 2008
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8. Influence of the enzymes α-galactosidase and poligalacturonase in the Dalbergia nigra seed germination (Leguminoseae-Papilonoidea) / Influência das enzimas α-galactosidase e poligalacturonase na germinação de sementes de Dalbergia nigra (Leguminoseae- Papilonoidea)
This work aimed to study the enzymes α-galactosidase and polygalacturonase and to verify the composition and the alteration of the cell wall sugars and the pectic component in the teguments of D. nigra seeds during the germination. The seeds were submitted to water imbibition for 168 hours. Samples of seeds were taken for the biochemical and kinetic cha
Publicado em: 2008
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9. Efficiency of pectic enzyme production and selectivity of phytosanitary products on the biologic agent G088 / ProduÃÃo de enzimas pectinolÃticas e seletividade de produtos fitossanitÃrios sobre o agente biolÃgico G088
Para a obtenÃÃo de enzimas microbianas, Ã necessÃria a seleÃÃo de um microrganismo. As linhagens especÃficas de microrganismos empregados na produÃÃo de enzimas sÃo, originalmente, obtidas por isolamento a partir de fontes naturais ou das culturas mantidas em coleÃÃes estabelecidas. Recentemente, um grande nÃmero de microrganismos, isolado de di
Publicado em: 2007
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10. Extração liquido-liquido de pectinase microbiana
Pectinolíticas enzymes degrade molecules of pectic substances and are used to clear juices and wines. Among them we stand out poligalacturonase (PG), pectinesterase (PE) and pectinlyase (PL). These enzymes have been produced by submerged fermentation using Aspergillus niger NRRL-3122, Humicola grisea CCT-2664, Penicillium italicum IZ-1584 and Pichia canaden
Publicado em: 2002
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11. An exo-poly-alpha-D-galacturonosidase implicated in the regulation of extracellular pectate lyase production in Erwinia chrysanthemi.
Pectic enzymes in the supernatants of Erwinia chrysanthemi cultures in late-logarithmic-phase growth on D-galacturonan were resolved into three components: two pectate lyase isozymes and an exo-poly-alpha-D-galacturonosidase previously unreported in this organism. The hydrolytic enzyme was purified to homogeneity by ammonium sulfate fractionation, preparativ
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12. Studies on the Pectic Substances of Plant Cell Walls: III. DEGRADATION OF CARROT ROOT CELL WALLS BY ENDOPECTATE LYASE PURIFIED FROM ERWINIA AROIDEAE
Pectate lyase was isolated from the cell extract of Erwinia aroideae. The enzyme was further purified to a high degree by a procedure involving ammonium sulfate fractionation and chromatography on CM-Sephadex C-50 and on Sephadex G-200. The enzyme attacked its substrate in an endo fashion and was more active on the sodium salt of acid-insoluble polygalacturo