% cobalt acetate The precursors were rapidly heated to 310°C in

% cobalt acetate. The precursors were rapidly heated to 310°C in an electric furnace with an inert gas atmosphere for fast thermal decomposition (Figure 1). The syntheses were carried out using different ambient gases, including flowing inert Ar (99.999%), flowing air (99.999%) with a continuous oxygen supply, and closed air see more (99.999%) with oxygen inclusion only for the initial reaction (Table 1). The gas flow rate was maintained at 25 sccm. The nanowire length was manipulated from 500 nm to 3 μm by controlling the synthesis time between 30 min and 2 h. The synthesized nanowires were cleaned in ethanol and distilled water repeatedly, followed by annealing

in stages at 300°C for 10 h and 800°C MAPK inhibitor for 10 h under a vacuum (10-2 Torr) to remove organic residues. For comparison, ZnCoO nanopowder [13] and ZnCoO micropowder [20] were also prepared (see the

references for detailed information). Hydrogen injection was performed by plasma treatment using an Ar/H (8:2) mixed gas (99.999%), and all samples were exposed twice for 15 min to hydrogen plasma using an RF power of 80 W. Figure 1 Electric furnace for the synthesis of ZnCoO nanowires. Table 1 Controlling ambient gas by gas distinction Sample name Gas S1 Argon gas (99.999%, continuous flow) S2 Air gas (99.999%, continuous flow) S3 Air gas (99.999%, non-continuous) The change in nanowire morphology and the secondary phase were investigated by field-emission scanning electron microscopy (FE-SEM, S-4700, Hitachi, Tokyo, Japan) and X-ray diffraction (XRD, Empyrean series2, PANalytical, Almelo, The Netherlands). Magnetic properties such as magnetization were measured using a vibrating sample magnetometer (VSM, model 6000, Quantum Design, San Diego, CA, USA) attached to a physical property measurement system. Results and discussion Figure 2 shows the FE-SEM images of the ZnCoO nanowires synthesized using different ambient gases. Figure 2a shows the FE-SEM images of the samples labeled S1, which were fabricated using ambient Ar gas.

Figure 2b shows the same image magnified by a factor of three. ZnCoO nanowires were produced sporadically, and the average length was 700 nm. Figure however 2c shows the FE-SEM images of the samples labeled S2, which were fabricated using air continuously supplied with oxygen. Figure 2d shows the same image magnified by a factor of three. ZnCoO nanowires were produced sporadically, and the maximum length was approximately 2.5 μm. Figure 2e shows the FE-SEM images of the samples labeled S3, which were generated using a fixed air supply with restricted oxygen content. Figure 2f shows the same image magnified by 1.5. The ZnCoO nanowires were produced uniformly, and the average length was 2 μm. These results indicate that the morphology of the ZnCoO nanowires selleck chemicals llc depends on the ambient gas and, in particular, on the oxygen content.

In this study we use a techno-economic approach to examine the te

In this study we use a techno-economic approach to examine the technological feasibility of a global reduction of GHG emissions by 50 % relative to the 1990 level by 2050, a target that roughly corresponds to the AR-13324 climate target of 2 °C. We also perform a detailed analysis of the contribution of low-carbon technologies to GHG emission reduction in the mid- and long-term and evaluate the required technological cost.2 Methodology AIM/Enduse[Global] The analysis in this paper uses AIM/Enduse[Global], a techno-economic model for mid- to long-term climate change mitigation policy assessment. AIM/Enduse[Global]

is a dynamic recursive CBL0137 in vitro model with a 1-year time step and a detailed framework for technology selection. The model selects technologies by linear programming algorithms that minimize the

total system cost (including the initial investment, operation, and maintenance costs of technologies, energy cost, and other costs such as carbon tax) given fixed service demands such as steel production, passenger transport, space heating demand, Wnt inhibitor etc. The model estimates energy consumption and GHG emissions (e.g., CO2, CH4, N2O, HFC, PFC, and SF6) driven by technological change. Kainuma et al. (2003) provide a detailed formulation of the model. The version of AIM/Enduse[Global] used in this article splits the world into 32 regions over a time horizon from 2005 to 2050. It covers energy sectors through the phases of energy production to end-use, and non-energy sectors, including agriculture, waste, and F-gases (Fig. 1). Emission from land use change is treated as an exogenous scenario.3 A foremost feature of the model is its detailed description of technologies not only in energy supply sectors, but also in energy end-use sectors and non-energy sectors (Table 2). Fig. 1 Overview of AIM/Enduse[Global] Table 2 List of technologies

considered in AIM/Enduse[Global] Sector Category Technology options Power generation Coal Pulverized coal combustion (PCC), PLEKHM2 supercritical PCC (SC-PCC), ultra-supercritical PCC (USC-PCC), advanced ultra-supercritical PCC (AUSC-PCC), integrated gasification combined cycle (IGCC), SC-PCC with carbon capture and storage (CCS), USC-PCC with CCS, AUSC-PCC with CCS, IGCC with CCS Oil Combined cycle (CC) Gas Combined cycle (CC), advanced combined cycle (ACC) [level 1–2], ACC with CCS Renewables Hydropower, wind power [level 1–3], wind power with storage battery [level 1–3], photovoltaics [level 1–4], photovoltaics with storage battery [level 1–4], biomass power plant, biomass IGCC, biomass IGCC with CCS Hydrogen production   Coal, coal with CCS, natural gas, natural gas with CCS, biomass, biomass with CCS Industry Steel Coke oven (e.g., large-sized coke oven, coke gas recovery, automatic combustion, coal wet adjustment, coke dry type quenching, COG latent heat recovery, next generation coke oven), sinter furnace (e.g.

CrossRefPubMed 6 Brocklehurst KR, Hobman JL, Lawley B, Blank L,

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vesicatoria XAC2699 48 8/6 32 33 0/4 4 8/18% −3 9 11 Transcriptio

a.

pv. citri XAC3347 40.9/4.91 45.0/6.0 47/43% −1.9 422 NADH-ubiquinone oxidoreductase 40 Q3BRN4_XANC5 X. c. pv. Erismodegib mw vesicatoria XAC2699 48.8/6.32 33.0/4.4 8/18% −3.9 11 Transcription 11.04 RNA processing 153 Polynucleotide phosphorylase 137 PNP_XANAC see more X. a. pv. citri XAC2683 75.5/5.47 28.0/5.9 6/3% −1.5 12 Protein synthesis 12.01 Ribosome biogenesis 79 50S ribosomal protein L4 133 AAM35856 X. a. pv. citri XAC0973 21.8/9.68 14.0/5.9 4/15% +5.1 12.04 Translation 26 Elongation factor Tu 294 Q3BWY6_XANC5 X. c. pv. vesicatoria XAC0957 43.3/5.45 67.0/6.2 25/24% +2.2 173 Elongation factor Tu 329 Q3BWY6_XANC5 X. c. pv. vesicatoria XAC0957 43.3/5.45 48.0/5.9 20/42% +4.4 14 Protein fate (folding, modification and destination) 14.01 Protein folding and stabilization 416 Chaperone protein DnaK 98 DNAK_XANOM X. oryzae XAC1522 68.9/5.02 66.0/6.3 10/12% +2.9 20 Cellular transport, transport facilities and transport routes 20.03 Transport facilities 151 Regulator of pathogenicity factors 104 Q8PJM6_XANAC X. a. pv. citri XAC2504 41.3/5.98 41.0/4.3 8/21% +3.2 429 Regulator of pathogenecity factors 729 Q8PJM6_XANAC X. a. pv. citri XAC2504 41.3/5.98 47.0/4.5 55/61% +2.7 486 Regulator of pathogenecity factors 231 Q8PJM6_XANAC X. a. pv. citri XAC2504 41.3/5.98 48.0/5.2 16/30% +2.2 526 *Regulator of pathogenecity factors 183 Q3BS50_XANC5 X.

c. pv. vesicatoria XAC2504 46.4/7.10 48.0/5.3 16/21% +1.8 555 *Regulator of RG7112 solubility dmso pathogenecity factors 148 Q3BS50_XANC5 X. c. pv. vesicatoria XAC2504 46.4/7.10 42.0/4.9 11/12% +2.8 30 Cellular communication/Signal transduction mechanism 103

OmpA-related protein 371 Q8PER6_XANAC X. a. pv. citri XAC4274 110.1/5.29 75.0/5.9 28/16% +2.9 1 TonB-dependent receptor 1406 Q8PI48_XANAC X. a. pv. citri XAC3050 105.8/4.76 42.0/4.1 89/34% +2.9 2 TonB-dependent receptor 1441 Q8PI48_XANAC X. a. pv. citri XAC3050 105.8/4.76 58.0/6.7 85/35% +2.9 74 TonB-dependent receptor 597 Q8PI48_XANAC X. a. pv. citri XAC3050 105.8/4.76 20.0/4.7 27/15% +3.4 219 TonB-dependent receptor 356 Q8PI48_XANAC X. a. pv. citri XAC3050 105.8/4.76 68.0/6.4 23/23% +2.2 466 TonB-dependent receptor-precursor 113 Q8PI27_XANAC X. a. pv. citri XAC3071 97.3/5.14 54.0/6.8 7/4% +3.6 55 *TonB-dependent receptor 166 Q2HPF0_9XANT X. a. pv. glycines XAC3489 88.9/4.93 58.0/6.4 8/9% +2.8 168 TonB-dependent receptor Mannose-binding protein-associated serine protease 636 Q8PGX3_XANAC X. a. pv. citri XAC3489 89.0/5.00 55.0/6.0 38/29% +4.9 38 *TonB-dependent receptor 594 Q8PHT1_XANAC X. a. pv. citri XAC3168 87.3/5.20 48.0/6.0 44/21% −1.8 15 TonB-dependent receptor 229 Q8PH16_XANAC X. a. pv.

52 Paragraph 2) Ministry of Health, Labour and Welfare, Tokyo (i

52 Paragraph 2). Ministry of Health, Labour and Welfare, Tokyo (in Japanese) Ministry of Social Affairs, Employment

(Ministerie van Sociale Zaken en Werkgelegenheid), the Netherlands (2006) Working conditions act (Act No. 673). Ministry of Social Affairs and Employment, the Netherlands (in Dutch) Muto T, Tomita M, Kikuchi S, Watanabe selleck T (1997) Methods to persuade higher management to invest health promotion programmes in the workplace. Occup Med 47:210–216CrossRef Nauta AP, von Grumbkow J (2001) Factors predicting trust between GPs and Ops. Int J Integr Care 1:e31 Nicholson PJ (2004) Occupational health services in the UK—challenges and opportunities. Occup Med (Lond) 54:147–152CrossRef Oudhoff JP, Timmermans DRM, Knol DL, CHIR-99021 order Bijnen AB, Van der Wal G (2007) Prioritising patients on surgical waiting lists: a conjoint analysis study on the priority judgements of patients, surgeons, occupational physicians, and general

pracitioners. Soc Sci Med 64:1863–1875CrossRef Park H, Ha E, Kim J, Jung H, Paek D (2002) Occupational OSI-027 in vitro health services for small-scale enterprises in Korea. Ind Health 40:1–6CrossRef Parker D, Brosseau L, Samant Y, Pan W, Xi M, Haugan D, Study Advisory Board (2007) A comparison of the perceptions and beliefs of workers and owners with regard to workplace safety in small metal fabrication businesses. Am J Ind Med 50:999–1009CrossRef Reetoo KN, Harrington JM, Macdonald EB (2005) Required competencies of occupational physicians: a Delphi survey of UK customers. Occup Environ Med 62:406–413CrossRef Russell RM, Maidment SC, Brooke I, Topping Celastrol MD (1998) An introduction to UK schemes to help small firms control health risks from chemicals. Ann Occup Hyg 68:699–704 Terada H, Sone T, Takemura S (2005) A study on actual situation of community industrial physicians for small and medium-sized enterprises and their involvement in community occupational health services. Sangyo Eiseigaku Zasshi 47:259–268 (in Japanese with English abstract)CrossRef Walker

D, Tait R (2004) Health and safety management in small enterprises; an effective low cost approach. Safety Sci 42:69–83CrossRef Weel AN, Plomp HN (2007) Developments in occupational health services in the Netherlands: from a professional to a market regime. Supporting health at work: international perspectives on occupational health services, policy and practice in health and safety, institution of occupational safety and health issue 1 Suppl:87–101″
“Introduction Women report more fatigue than men (Nelson and Burke 2002; Pugliesi 1999; Macintyre et al. 1996), whether this concerns mental fatigue, physical fatigue, sleepiness, feeling tired, or emotional exhaustion (Bakker et al. 2002; Åkerstedt et al. 2004). Women also report sleeping disorders more often than men (Åkerstedt et al. 2004; Peretti-Watel et al. 2009).

(C) Following photodynamic therapy with laser light and methylene

(C) Following photodynamic therapy with laser light and methylene blue (L+S+), the wounds show a dense cellular infiltrate at the edges and the subcutaneous fat very similar to the control wounds. Discussion There are many reports in the literature of the ability of light-activated antimicrobial agents to kill a wide range of microbes in the laboratory [9, 20]. In some of these in vitro investigations, attempts have been made to model the in vivo situation by using biofilms of the target organisms [21] or by carrying out experiments in the presence of blood or serum.[22, 23] In this study we have taken this further by investigating

the ability of a LAAA, methylene blue, to kill bacteria while present in a wound. Our in vivo model reflects the early stages of an infectious process i.e. the initial colonisation of a wound by a potential disease-inducing organism. We Luminespib used a strain of MRSA that is known to cause wound infections EGFR inhibitors cancer with significant clinical relevance, including fatal outcomes. The results of our study demonstrate for the first time that it is possible to reduce the number of

viable MRSA present in a wound using the LAAA methylene blue when activated by 360 J/cm2 of light (with a wavelength of 665 nm – the absorbance maximum of methylene blue) from a low power laser. Although substantial reductions in the viable count of MRSA in the wounds were achieved, the kills observed in this in vivo model were substantially lower than those reported in in vitro studies. Hence, using light doses as low as 43 J/cm2, 4.7 log10 reductions in the viable count of a suspension of MRSA (1010 CFU/ml) were GSK2126458 datasheet obtained using the LAAA toluidine blue O (a phenothiazinium dye closely related to methylene blue) at a concentration

of 12.5 μg/ml [12]. Wainwright et al. also reported that methylene Olopatadine blue and toluidine blue O are extremely effective LAAAs against MRSA in vitro [13]. To our knowledge, only three papers have been published on the use of LAAAs to kill S. aureus in vivo [17, 24, 25]. Each of these has used a different animal model and a different LAAA which makes comparisons with the present study difficult. However, in all of these studies the bacterial kills reported were considerably lower than those that can be achieved in vitro. For example, when the LAAA meso-mono-phenyl-tri(N-methyl-4-pyridyl)-porphyrin (PTMPP) was used to kill S. aureus in burn wounds in mice, the kills achieved amounted to less than 2 log10 units using a light dose of 211 J/cm2 [17]. Much greater kills were attained in vitro using a considerably lower light dose (0.6 J/cm2 compared with 211 J/cm2) and concentration of PTMPP (1.6 μM in vitro compared with 500 μM in vivo).

Therefore, the possible catabolic repression exerted by succinate

Therefore, the possible catabolic repression exerted by succinate and glucose was investigated. Strains containing the reporters P paaA , P paaZ Epacadostat research buy and P paaH or the plasmid pJH1 were grown in minimal medium containing PA with or without the additional carbon source and analyzed at one-hour intervals (Figure 3). B. cenocepacia K56-2 harbouring pJH1 was used as a control as the dhfr promoter is constitutive in Burkholderia species [10, 18]. Figure 3A shows that fluorescence increased linearly with optical density in the media types tested, indicating the rate of eGFP

expression does not change during growth with each of the conditions in B. cenocepacia. Initially, the click here levels of eGFP expression were not affected with the different carbon sources, ABT-737 in vivo although at optical densities above 0.6, fluorescence varied slightly depending on the different carbon sources used. Catabolic repression by glucose on the PA-inducible eGFP expression was observed in cells harbouring P paaA , at approximately an O.D600 of 0.3 where a shift in the slope towards steady levels of fluorescence, suggesting lack of de novo eGFP synthesis, was observed (Figure 3B). The same effect was observed with reporters P paaZ and P paaH (Figure 3C and 3D respectively). This is contrasted with

cells grown in succinate, which exhibited strong silencing of eGFP expression at all cell densities (Figure 3B-D). We concluded that glucose and succinate exert catabolic repression of the PA degradation FER pathway. Figure 3 Phenylacetic acid genes are subject to Carbon Catabolite Repression. B. cenocepacia K56-2 containing eGFP translational fusions with the dhfr promoter (A), P paaA (B), P paaZ (C), and P paaH (D) were grown for 13 hours in M9 minimal media supplemented with the indicated carbon sources. Error bars represent the standard deviation of three independent cultures. Insertional mutagenesis of BCAL0210 results in increased expression of PA-inducible genes Located 128 bp downstream of the paaABCDE gene cluster and oriented

in the same direction are genes BCAL0211 and BCAL0210 (Figure 4A). BCAL0211 is predicted to encode a 273 amino acid protein containing a conserved domain of unknown function (DUF1835 superfamily) while BCAL0210 was annotated as a TetR family regulatory protein. Results of our BLAST search indicated the N-terminal region of BCAL0210 protein shows 60% similarity to AcrR (Expect value = 5e-7), which is a TetR-like regulator of a multi-drug efflux pump of E. coli [19–21]. Given that a regulator protein homologous to PaaX, the GntR-type transcriptional regulator of PA degradation in E. coli [22] is not encoded in B. cenocepacia J2315 genome, we hypothesized that the BCAL0210 gene encoded the regulator of PA catabolism in B. cenocepacia. The effect of the loss of BCAL0210 function on the regulation on the PA genes was determined by insertional mutagenesis of the BCAL0210 gene to create the strain JNRH1.

Dietary amino acids are the major fuel for the small intestinal m

Dietary amino acids are the major fuel for the small intestinal mucosa as well as they are important substrates for the synthesis of intestinal proteins such as nitric oxide polyamines and other products with enormous biological activity [41]. Glutamine was one of the few free Selleck GANT61 amino acid related compounds which was found at the highest level

in HC children. A low level of glutamine was also previously found in CD this website children and adults [22]. Specific amino acids and related compounds, including glutamine, were shown to possess a therapeutic role in gut diseases [41]. This study confirmed the hypothesis that CD is associated with intestinal and faecal dysbiosis, which is related to certain bacterial species. Recently, it was shown that potential celiac subjects and overt celiac subjects show differences in the urine metabolites and a very similar serum metabolic profile [42]. Metabolic alterations

GM6001 solubility dmso may precede the development of small intestinal villous atrophy and provide a further rationale for early institution of GFD in patients with potential CD [42]. As shown by both microbiology and metabolome analyses, the GFD lasting at least two years did not completely restore the microbiota and, consequently, the metabolome of CD children. Probably, the addition of prebiotics and probiotics to GFD might restore the balance of microbiota and metabolome of CD children. Conclusions As shown by the microbiology and metabolome studies, the gluten-free diet lasting at least two years did not completely restore the microbiota Adenosine triphosphate and, consequently,

the metabolome of CD children. Combining the results of this work with those from previous reports [9, 10, 16, 22, 27, 37], it seems emerge that microbial indeces (e.g., ratio between faecal cell density of lactic acid bacteria-Bifidobacterium vs. Bacteroides-Enterobacteria) and levels of some metabolites (e.g., ethyl-acetate, octyl-acetate, SCFA and glutamine) are signatures of CD patients. Further studies, using a major number of children and a complete characterization of all microbial groups, are in progress to find a statistical correlation between the microbiota and metabolome of T-CD compared to HC children. Methods Subjects Two groups of children (6 – 12 years of age) (Table 5) were included in the study: (i) nine-teen symptom-free CD patients, who had been on a GFD for at least 2 years (treated CD children, T-CD) (children numbered: 1 – 19 T-CD); and (ii) fifteen children without celiac disease and other known food intolerance undergoing upper endoscopy for symptoms related to functional dyspepsia and in whom endoscopy showed no signs of disease (non-celiac children) (children numbered: 20 – 34 HC). The pathology was diagnosed according to criteria given by the European Society for Pediatric Gastroenterology, Hepatology, and Nutrition.

Table 3 The most common authors and their associated

Table 3 The most common authors and their associated publications appearing on the reading lists of syllabi available for introductory or core sustainability courses at both Bachelor’s and NU7026 nmr master’s level (N = 22 core sustainability courses taught in 32 degree programs). Where multiple publications are listed, the numbers refer to the total for each author Author(s) Courses featured Title Year Hardin 6 The tragedy of the commons 1968 Rockström et al. 4 A safe operating

space for humanity 2009 Folke 4 Principles of ecosystem stewardship: resilience-based natural resource management in a changing world (Chapin et al.) 2009 Adaptive co-management for building resilience in social ecological systems (Olsson et al.) 2004 Resilience and sustainable selleck screening library development: building adaptive capacity in a world of transformation (Folke et al.) 2002 Holling 3 Resilience and stability of ecological systems 1973 Miller and Spoolman 3 Living in the environment: principles, connections and solutions 2009 Environmental problems, their causes, and sustainability in Environmental Science 2010 Discussion Curriculum structure In our examination of 54 higher education programs in sustainability, we found that core courses made up the majority

of the curriculum in all but two bachelor’s programs and all but one master’s program, with the overall Z-VAD-FMK mouse proportion of core courses within a program varying from 42 to 100 %. Given this majority, we are confident Verteporfin research buy that our analysis of the core course breadth and subject areas adequately captures and reflects the essence and fundamental content of these sustainability programs. We speculate that the higher

proportion of core courses within master’s programs compared to bachelor’s programs is similar within other disciplines and may also be a result of the origins of the bachelor’s and master’s sustainability programs. Based on information available on program websites, many bachelor’s programs in sustainability appear to have evolved from existing programs or departments in which a few core courses in sustainability are developed, supplemented by electives comprised of existing courses taught by faculty in their respective tenure-line departments across disciplines. In contrast, master’s programs are more likely to be created as a stand-alone interdisciplinary program from the start, often through an academic center or a department, with a specifically designed, more limited, and more prescribed curriculum. Bachelor’s programs also typically require more curricular flexibility so that students can fulfill general education requirements within a reasonable period of time, while master’s programs do not include general education requirements and tend to be more focused, with students moving through specified courses as a cohort.

3 and 25 μl of cell cultures were added to each well The bioassa

3 and 25 μl of cell GANT61 molecular weight cultures were added to each well. The bioassay plates were incubated at 28°C for 24 hr. DSF activity was indicated by the presence of a blue halo around the well. To quantify DSF production, blue halo zone widths in the bioassay were converted to DSF units using the formula: DSF(unit ml-1) = 0.134 e(1.9919W), where W is the width in centimeters of the blue halo zone surrounding each well. Relative level of DSF-family signals in one sample was quantified using peak area in HPLC elute. One unit of DSF was defined as 100,000 μV/sec. Purification of DSF, BDSF and CDSF Xoo strain was cultured in YEB

medium for 48 h. Five liters of bacterial supernatant were collected by centrifugation at 3,800 rpm for 30 min

at 4°C mTOR inhibitor (J6-HC Centrifuge, BECKMAN COULTER™). The pH of the supernatants was adjusted to 4.0 by adding hydrochloric acid prior to extraction with an equal volume of ethyl acetate twice. The ethyl acetate fractions were collected and the solvent was removed by rotary evaporation at 40°C to dryness. The residue was dissolved in 20 ml of methanol. The crude extract, divided into four batches, was subjected to flash column chromatography using a silica gel column (12 × 150 mm, Biotage Flash 12 M cartridge), eluted with ethyl acetate-hexane AZD5153 research buy (25:75, v/v, 0.05% acetic acid). The collected active component was then applied to HPLC on a C18 reverse-phase column (4.6 × 250 mm, Phenomenex Luna), eluted with water in methanol (20:80, v/v, 0.1% formic acid) at a flow rate of 1 ml/min in a Waters 2695 system with 996 PDA detector. Structure analysis 1H, 13C, 1H-1H COSY, and heteronuclear multiple

quantum coherence (HMQC) nuclear magnetic resonance (NMR) spectra in CDCl3 solution were obtained using a Bruker DRX500 spectrometer operating at 500 MHz for 1H or 125 MHz for 13C. High-resolution electrospray ionization mass spectrometry was performed on a Finnigan/MAT MAT 95XL-T mass spectrometer. Quantitative determination of extracellular xylanase activity and EPS production The fresh colonies of Xoo strains were inoculated (-)-p-Bromotetramisole Oxalate in 50 ml of YEB liquid medium with or without DSF-family signals at a starting OD600 of 0.05. After growth for two days, the bacterial cultures at an OD600 of 2.5 were collected and the supernatants were prepared by centrifugation at 14,000 rpm for 10 min. The extracellular xylanase activity in the culture supernatants of Xoo strains were measured by using 4-O-methyl-D-glucurono-D-xylan-Remazol Brilliant Blue R (RBB-Xylan; Sigma Co.) according to the methods described previously [31, 25]. To determine the production of EPS, potassium chloride was added to 10 ml of the supernatants at a final concentration of 1.0% (w/v). Two volumes of absolute ethanol were added to the supernatants and the mixtures were then kept at -20°C for overnight. The precipitated EPS molecules were spun down and dried at 55°C oven overnight before determination of dry weight.