The effects of increasing levels of soluble non-starch polysaccharides and inclusion of feed enzymes in dog diets on faecal quality and digestibility

Twomey, L N; Pluske, J.R.; Rowe, Jeffrey E.; Choct, Mingan; Brown, Wendy; McConnell, Mike; Pethick, D.W.

doi:10.1016/s0377-8401(03)00161-5

Cited by 62 publications

(37 citation statements)

References 17 publications

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“…This significant up-regulation of hemicellulases could also be due to the thermotolerant nature of the enzymes secreted by this thermostable fungal strain because Aspergilli endoxylanases demonstrate the maximal activities at a range of 42°C-60°C, and a pH range of 4.0-7.0 [33,67]. Xylanolytic enzymes have great biotechnological potential and are exploited for various industrial processes, including feed, food, pulp, and others [68][69][70]. Interestingly, enzymes like endo-1,4-betaxylanase, beta-xylosidase, glucuronidase, arabinofuranosidase and acetylxylan esterases that act on different heteropolymers were expressed and significantly up-regulated when xylan was used as a substrate, indicating their potential use in lignocellulosic biorefineries.…”

Section: Discussionmentioning

confidence: 99%

Quantitative proteomic study of Aspergillus Fumigatus secretome revealed deamidation of secretory enzymes

Adav

Ravindran

2015

Journal of Proteomics

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Section: Discussionmentioning

confidence: 99%

Quantitative proteomic study of Aspergillus Fumigatus secretome revealed deamidation of secretory enzymes

Adav

Ravindran

2015

Journal of Proteomics

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“…The monogastric animals do not produce plant cell wall degrading enzymes, such as xylan and cellulose, resulting in lower use of cereal foods. These enzymes increase the metabolizable energy and reduce the food viscosity, leading to animal weight gain (Conte et al 2002;Twomey et al 2003;Polizeli et al 2005). High levels of metabolizable energy food represent its better utilization and thus, reduce its inclusion levels in diets.…”

Section: Biotechnological Applicationsmentioning

confidence: 99%

β-Xylosidases from filamentous fungi: an overview

Knob

Terrasan

Carmona

2009

World J Microbiol Biotechnol

162

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b-Xylosidases are hydrolytic enzymes which play an important role in xylan degradation, hydrolyzing xylobiose and xylooligosaccharides to xylose from the nonreducing end. Filamentous fungi are particularly interesting producers of this enzyme from an industrial point of view, due to the fact that they secrete b-xylosidases into the medium. Besides, fungal b-xylosidases are highly advantageous for their elevated activity levels and specificity. Interest in xylanolytic enzymes has been increasing, for their possible application in many biotechnological processes. This fact has driven the isolation, purification and characterization of several b-xylosidases. In this review, the mechanisms of action, substrate specificities, physicochemical characteristics, regulation at molecular level, molecular cloning and classification of filamentous fungal b-xylosidases are described. The potential industrial applications of fungal b-xylosidases will also be presented.

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“…Not less important is the use of xylanases for bread-making and beer production (13,14). On the other hand, in the industry of animal feed, the xylanases can be added to the ration increasing the intestinal absorption of nutrients (15).…”

Section: Introductionmentioning

confidence: 99%

Screening of filamentous fungi for production of enzymes of biotechnological interest

Guimarães¹,

Peixoto-Nogueira²,

Michelin³

et al. 2006

Braz. J. Microbiol.

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Many enzymes produced by fungi have relevant biotechnological applications in several industrial areas. The purpose of this study was to collect and isolate filamentous fungi from soil and humus, plants and sugar cane bagasse of different regions of the São Paulo state. Forty isolates were examined for their ability to produce xylanase, glucose-oxidase, alkaline phosphatase, acid phosphatase, phytase, pectinase and amylase. Among these, twenty three isolates exhibited enzymatic potential. The xylanases produced by two of these isolates (Aspergillus caespitosus and A. phoenicis) showed good potential for pulp bleaching. Among seventeen isolates, at least three produced high levels of glucose-oxidase, being Rhizopus stolonifer and A. versicolor the best producer strains. A. caespitosus, Mucor rouxii, and nine others still not identified were the best producers of phosphatases in submerged fermentation. Pectinase was best produced by IF II and C-8 belong R. stolonifer. Significant levels of amylase were produced by Paecilomyces variotii and A. phoenicis. A remarkable enzyme producer was Rhizopus microsporus var. rhizopodiformis that produced high levels of amylase, alkaline and acid phosphatases, and pectinase. Some morphological structures of this fungus were illustrated using light microscopy (LM) and scanning electron microscopy (SEM). This study contributes to catalogue soil fungi isolated in the state of São Paulo, and provides additional information to support future research about the industrial potential of these microorganisms that may produce enzymes and, eventually, also secondary metabolites with anti-microbial or anti-parasitic activities.

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The effects of increasing levels of soluble non-starch polysaccharides and inclusion of feed enzymes in dog diets on faecal quality and digestibility

Cited by 62 publications

References 17 publications

Quantitative proteomic study of Aspergillus Fumigatus secretome revealed deamidation of secretory enzymes

Quantitative proteomic study of Aspergillus Fumigatus secretome revealed deamidation of secretory enzymes

β-Xylosidases from filamentous fungi: an overview

Screening of filamentous fungi for production of enzymes of biotechnological interest

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