Xylanase production by Burkholderia sp. DMAX strain under solid state fermentation using distillery spent wash

Mohana, Sarayu; Shah, Amita; Divecha, Jyoti; Madamwar, Datta

doi:10.1016/j.biortech.2008.02.009

Cited by 109 publications

(49 citation statements)

References 41 publications

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“…However, those populations most abundant in situ were mainly Proteobacteria. These include members of Burkholderia and Pseudomonas, two genera known to degrade a wide variety of organic compounds and previously implicated in lignocellulose degradation (Harazono et al, 2003;Mohana et al, 2008;Cheng and Chang, 2011). Both genera occupy diverse ecological niches, as soil and aquatic heterotrophs, plant mutualists as well as plant and animal opportunistic pathogens (Coenye and Vandamme, 2003;Salles et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

Long-term effects of timber harvesting on hemicellulolytic microbial populations in coniferous forest soils

et al. 2015

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Forest ecosystems need to be sustainably managed, as they are major reservoirs of biodiversity, provide important economic resources and modulate global climate. We have a poor knowledge of populations responsible for key biomass degradation processes in forest soils and the effects of forest harvesting on these populations. Here, we investigated the effects of three timber-harvesting methods, varying in the degree of organic matter removal, on putatively hemicellulolytic bacterial and fungal populations 10 or more years after harvesting and replanting. We used stable-isotope probing to identify populations that incorporated 13C from labeled hemicellulose, analyzing 13C-enriched phospholipid fatty acids, bacterial 16 S rRNA genes and fungal ITS regions. In soil microcosms, we identified 104 bacterial and 52 fungal hemicellulolytic operational taxonomic units (OTUs). Several of these OTUs are affiliated with taxa not previously reported to degrade hemicellulose, including the bacterial genera Methylibium, Pelomonas and Rhodoferax, and the fungal genera Cladosporium, Pseudeurotiaceae, Capronia, Xenopolyscytalum and Venturia. The effect of harvesting on hemicellulolytic populations was evaluated based on in situ bacterial and fungal OTUs. Harvesting treatments had significant but modest long-term effects on relative abundances of hemicellulolytic populations, which differed in strength between two ecozones and between soil layers. For soils incubated in microcosms, prior harvesting treatments did not affect the rate of incorporation of hemicellulose carbon into microbial biomass. In six ecozones across North America, distributions of the bacterial hemicellulolytic OTUs were similar, whereas distributions of fungal ones differed. Our work demonstrates that diverse taxa in soil are hemicellulolytic, many of which are differentially affected by the impact of harvesting on environmental conditions. However, the hemicellulolytic capacity of soil communities appears resilient.

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Section: Discussionmentioning

confidence: 99%

Long-term effects of timber harvesting on hemicellulolytic microbial populations in coniferous forest soils

et al. 2015

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“…The hemicellulosic fraction includes xyloglucans, glucomannans and galactomannans which are covalently linked to pectin and hydrogen-bonded to cellulose (49,22). In this sense, xylans and xyloglucans are the major components of plant hemicelluloses and the second most abundant renewable polysaccharide after cellulose (37). Xylan is an heterogeneous polysaccharide consisting of β-1,4-linked D-xylosyl residues on the back bone, but also contains arabinose, glucuronic acid and arabinoglucuronic acids linked to the D-xylose back bone.…”

Section: Introductionmentioning

confidence: 99%

Xylanase production by Aspergillus awamori under solid state fermentation conditions on tomato pomace

Umsza-Guez¹,

Díaz²,

Ory³

et al. 2011

Braz. J. Microbiol.

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“…Incubation temperature also influences the transport of enzymes across the membrane, thereby affecting the enzyme yield [21,54]. The optimum temperature for production of cellulase and xylanase by both, B. pumilus LRF1X ( Figure 1B) and B. tequilensis HMF6X ( Figure 2B) were observed to be 35°C.…”

Section: Effect Of Different Temperaturementioning

confidence: 98%

Bio-processing of Linseed Oil-Cake through Solid State Fermentation by Non- Starch Polysaccharide Degrading Fish Gut Bacteria

Banerjee¹,

Ghosh²

2016

Ferment Technol

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Cellulose and hemicellulose (xylan) are the most common Non-Starch Polysaccharides (NSPs) present in plant ingredients that exhibit anti-nutritional effect. Degradation of cellulose and xylan has been investigated under solidstate fermentation (SSF) using oil-cakes, viz., groundnut oil-cake (GOC), mustard oil-cake (MOC), sunflower oilcake (SOC), sesame oil-cake (SeOC) and linseed oil-cake (LOC) as substrates. Finally LOC was considered in the present study as it contained maximum amount of cellulose (17.51 ± 0.87 g 100 g -1 ) and xylan (13.02 ± 0.66 g 100 g-1 ). Bio-processing of LOC was carried out through SSF in two different combinations utilizing efficient cellulaseand xylanase-producing strains, Bacillus pumilus KF640221 (Set-I) and Bacillus tequilensis KF640219 (Set-II), isolated previously from the proximal intestines of rohu, Labeo rohita and silver carp, Hypophthalmichthys molitrix, respectively. Analysis of the fermentation sets revealed that B. pumilus KF640221 in Set-I was most effective in reducing the cellulose and xylan contents of LOC. Besides, SSF under optimized conditions caused considerable increase in crude protein, crude lipid, total free amino acids and total free fatty acids along with reduction in the contents of other anti-nutritional factors, e.g., crude fiber, tannins, phytic acid and trypsin inhibitor. High performance liquid chromatography (HPLC) analysis of raw and fermented LOC of Set-I indicated that concentrations of methionine, histidine, tryptophan, phenylalanine, threonine were increased considerably. Further research is inevitable to explore the possibilities for utilization of SSF-processed LOC to set up a strategy for sustainable utilization of low cost oil-cakes as animal feed ingredients.

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Xylanase production by Burkholderia sp. DMAX strain under solid state fermentation using distillery spent wash

Cited by 109 publications

References 41 publications

Long-term effects of timber harvesting on hemicellulolytic microbial populations in coniferous forest soils

Long-term effects of timber harvesting on hemicellulolytic microbial populations in coniferous forest soils

Xylanase production by Aspergillus awamori under solid state fermentation conditions on tomato pomace

Bio-processing of Linseed Oil-Cake through Solid State Fermentation by Non- Starch Polysaccharide Degrading Fish Gut Bacteria

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