Bacterially derived wood adhesive

Haag, Anthony P.; Geesey, Gill G.; Mittleman, Marc W.

doi:10.1016/j.ijadhadh.2005.03.011

Cited by 40 publications

(17 citation statements)

References 11 publications

(12 reference statements)

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“…However, these methods demand a great amount of preliminary work and are labor-intensive. Because of this, there is particular interest in microbial polysaccharides in general and levan in particular, which possesses good adhesive properties because of the existence of reactive groups; these materials can fulfill the role of the bonding agent between LGS and wood particles and increase the humidity resistance of biocomposites (Combie 2003;Combie et al 2004;Haag et al 2004;Haag et al 2006). To test this concept, a culture liquid (CL) containing levan at a concentration of 14.5 g/L and a viscosity of 0.4 dPa•s in various ratios was added before molding with LGS.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Biocomposites using Sawdust and Lignosulfonate with a Culturе Liquid of Levan Producer Azotobacter vinelandii as a Bonding Agent

2016

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The possibility of preparing molding-bioengineered materials, such as woodchip boards (WCB), from sawdust using technical lignosulfonate (LGS), a wood waste product, and a culture liquid (CL) of levan microbial polysaccharide producer by Azotobacter vinelandii D-08 is explored in this article. The parameters of the derived materials are comparable to those of traditional materials made from toxic phenol-formaldehyde resins. The various physical and mechanical characteristics of the materials depend on the quantity of the bonding agent used for the preparation. Adding a culture liquid increases the humidity resistance of the molding materials. Using electron microscopy and X-ray microtomography, it is clear that the structure of woodchip boards become more homogeneous without microcracks with the addition of CL. The strength of the best samples prepared was approximately 24 to 29 MPa with a density of 1170 to 1255 kg/m 3 and a swell on wetting of 6.7%. During hot pressing, noticeable changes were observed by Fourier transform infrared spectroscopy (FTIR) at frequencies typical of LGS sulfonic-acid groups, levan fructose fragments, and skeletal vibrations of a syringal/guaiacyl core in lignin and of C-H groups of hemicelluloses. This indicates the involvement of these functional groups in the process of binding wood particles with hot pressing.

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Section: Resultsmentioning

confidence: 99%

Preparation of Biocomposites using Sawdust and Lignosulfonate with a Culturе Liquid of Levan Producer Azotobacter vinelandii as a Bonding Agent

2016

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“…The binding force strongly depends on the distance between interaction partners and acts over a relatively short distance (Rob et al 2007). Additionally, hydrogen bonds form between hydroxyl groups in polysaccharides and water molecules (Haag et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Control of Microbial Adhesion as a Strategy for Food and Bioprocess Technology

Araújo

Andrade

Silva

et al. 2009

Food Bioprocess Technol

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Bacteria and other microorganisms have a natural tendency to adhere to surfaces as a survival mechanism. This can occur in many environments, including the living host, industrial systems, and natural waters. The general outcome of bacterial colonization of a surface is biofilm formation, which consists of microorganisms immobilized in a variety of polymeric compounds generally referred to as extracellular polymeric substances. Bacterial adhesion to a solid surface is a crucial step in the biofilm process. This step is dependent upon van der Waals, electrostatic, and acid-base interactions. These interactions are influenced by physicochemical properties of the substratum and the bacterial surface, such as hydrophobicity, surface charge, and electron donor-electron acceptor properties. In addition, the roughness of the substratum and the microbiological characteristics of the cell surface, such as cellular appendages and production of exopolysaccharides, can affect the adherence process. To date, many strategies have been developed to decrease the adherence of bacteria to surfaces. Surface modification with the addition of the suitable compounds makes surfaces less attractive for microorganisms and therefore prevents bacterial adherence and biofilm formation.

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“…Other adhesive, non-toxic, and biodegradable carbohydrate polymers come from bacteria and fungi, for example glucans (pollulan) from higher basidiomycetes (Haars & Kharazipour 1998) and exopolysaccharides (EPS) from marine bacteria characterised by a special high water and low temperature resistance (Labare et al 1989, Weiner 1997. Qualities of bacterial exopolysaccharides provide to glued panels differ with the bacterial source they come from (Haag et al 2004(Haag et al , 2006. The anaerobic gramnegative bacteria Ruminococcus albus and Clostridium thermocellum degrade plant wastes by a range of cellolulytic enzymes, a property that is used in bio-ethanol production.…”

Section: Adhesives From Cellulose Hemicellulose Starch Dextrins Amentioning

confidence: 99%

Wood production, wood technology, and biotechnological impacts

Kües¹

2007

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Bacterially derived wood adhesive

Cited by 40 publications

References 11 publications

Preparation of Biocomposites using Sawdust and Lignosulfonate with a Culturе Liquid of Levan Producer Azotobacter vinelandii as a Bonding Agent

Preparation of Biocomposites using Sawdust and Lignosulfonate with a Culturе Liquid of Levan Producer Azotobacter vinelandii as a Bonding Agent

Control of Microbial Adhesion as a Strategy for Food and Bioprocess Technology

Wood production, wood technology, and biotechnological impacts

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