Cellulase
Mostrando 13-24 de 541 artigos, teses e dissertações.
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13. 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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14. Ecology and biotechnological potential of bacterial community from three marine sponges of the coast of Rio de Janeiro, Brazil
ABSTRACT Marine sponges has been a large reservoir of microbial diversity, with the presence of many species specific populations as well as producing biologically active compounds, which has attracted great biotechnological interest. In order to verify the influence of the environment in the composition of the bacterial community present in marine sponges a
An. Acad. Bras. Ciênc.. Publicado em: 11/12/2017
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15. Isolation and characterization of a novel endo-β-1,4-glucanase from a metagenomic library of the black-goat rumen
ABSTRACT The various types of lignocellulosic biomass found in plants comprise the most abundant renewable bioresources on Earth. In this study, the ruminal microbial ecosystem of black goats was explored because of their strong ability to digest lignocellulosic forage. A metagenomic fosmid library containing 115,200 clones was prepared from the black-goat r
Braz. J. Microbiol.. Publicado em: 2017-12
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16. Purification and characterization of a thermostable alkaline cellulase produced by Bacillus licheniformis 380 isolated from compost
ABSTRACT During composting processes, the degradation of organic waste is accomplished and driven by a succession of microbial populations exhibiting a broad range of functional competencies. A total of 183 bacteria, isolated from a composting process, were evaluated for cellulase activity at different temperatures (37, 50, 60, and 70°C) and pH values. Out
An. Acad. Bras. Ciênc.. Publicado em: 16/10/2017
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17. Changes in bacterial community of soil induced by long-term straw returning
ABSTRACT: Straw returning is an effective way to improve soil quality. Whether the bacterial community development has been changed by long-term straw returning in non-calcareous soil is not clear. In this study, the following five treatments were administered: soil without fertilizer (CK); wheat and corn straw returning (WC); wheat straw returning with 276
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-10
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18. Use of elephant grass (Pennisetum purpureum) as substrate for cellulase and xylanase production in solid-state cultivation by Penicillium echinulatum
Abstract The high cost of the enzymes used for the hydrolysis of lignocellulosic biomass is one of the bottlenecks in the production of second-generation ethanol and the use of local biomass, such elephant grass, can help to reduce this cost. In this investigation elephant grass biomass was evaluated as a carbon and inducer source of production of cellulases
Braz. J. Chem. Eng.. Publicado em: 2017-07
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19. Enzyme complex supplementation in different nutrient levels diets on pigs feces excretion and anaerobic digestion
ABSTRACT This research aimed to evaluate enzyme supplementation in diets with different nutritional levels for pigs in their feces excretion and anaerobic digestion. Fifty four gilts were placed on diets formulated to achieve 100 or 95 or 90 % of a pig's nutrient requirements, with the addition of an enzyme complex containing amylase, β-glucanase, cellulase
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-06
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20. Coexpression of rumen fungal xylanase and bifunctional cellulase genes in Escherichia coli
ABSTRACT Rumen fungi inhabit the gastro-intestinal tract of ruminants and the most non-ruminant herbivores. Rumen fungi produce highly active plant cell wall degrading enzymes, therefore they have gained scientific interest. In this study, genes encoding xylanase (xynA-7) and cellulase (celA-5) were amplified from Neocallimastix sp. GMLF7 and Orpinomyces sp.
Braz. arch. biol. technol.. Publicado em: 18/05/2017
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21. Potassium biphthalate buffer for pH control to optimize glycosyl hydrolase production in shake flasks using filamentous fungi
Abstract The optimization of culture medium with statistical methods is widely used in filamentous fungi glycosyl hydrolase production. The implementation of such methodology in bioreactors is very expensive as it requires several pH-controlled systems operating in parallel in order to test a large number of culture media components. The objective of this st
Braz. J. Chem. Eng.. Publicado em: 2017-04
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22. ENZYMATIC HYDROLYSIS AS AN ENVIRONMENTALLY FRIENDLY PROCESS COMPARED TO THERMAL HYDROLYSIS FOR INSTANT COFFEE PRODUCTION
Abstract Conventional production of instant coffee is based on solubilisation of polysaccharides present in roasted coffee. Higher process temperatures increase the solubilisation yield, but also lead to carbohydrate degradation and formation of undesirable volatile compounds. Enzymatic hydrolysis of roasted coffee is an alternative to minimize carbohydrate
Braz. J. Chem. Eng.. Publicado em: 2016-12
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23. Stability of enzyme complex solid-state fermentation subjected to the processing of pelleted diet and storage time at different temperatures
ABSTRACT The effects of processing of pelleted diets and their storage time on the stability of the enzyme complex SSF (solid-state fermentation) were evaluated. Two diets were formulated with the same nutritional composition, differing only in the Schizochytrium sp. levels (0 g kg-1 and 50 g kg-1). The samples were collected during the following processing
R. Bras. Zootec.. Publicado em: 2016-12
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24. Physiological and ultrastructural analysis reveal the absence of a defined abscission zone in coffee fruits
ABSTRACT In order to investigate the existence of a possible abscission zone in the binding region between the peduncle and the coffee fruit, as well as the biochemical events involved in fruit ripening, we studied peduncles and fruits of Coffea arabica L. cv. “Icatu amarelo”. Coffee fruits were harvested at different maturation stages by using specific
Bragantia. Publicado em: 06/10/2016