Research Progress in Friendly Environmental Technology for the Production of Cellulose Products (Bacterial Cellulose and Its Application)

El‐Saied, Houssni; Basta, Altaf H.; Gobran, Riad H.

doi:10.1081/ppt-120038065

Cited by 154 publications

(97 citation statements)

References 52 publications

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“…The performance of the modified sisal fibers was assessed using PLLA, primarily selected as an example of a renewable polymer matrix. Although PLLA is often used in biomedical applications, including in combination with bacterial cellulose, [18] it has a wide range of uses, for example in microwaveable disposable dishes, in textile applications and even in polymer blends with engineering plastics, such as polystyrene. [19] The interfacial adhesion between the (modified) fibers and the PLLA matrix was quantified using single-fiber pull-out tests; the apparent interfacial shear strength (IFSS), which is the slope of the graph in Figure 2a, of the unmodified sisal (Sisal-N) was significantly improved from 12.1 AE 0.5 MPa to 14.6 AE 1.2 MPa after the bacterial-cellulose growth (Sisal-NBC) ( Table 1 and Fig.…”

mentioning

confidence: 99%

Creating Hierarchical Structures in Renewable Composites by Attaching Bacterial Cellulose onto Sisal Fibers

et al. 2008

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confidence: 99%

Creating Hierarchical Structures in Renewable Composites by Attaching Bacterial Cellulose onto Sisal Fibers

et al. 2008

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“…The cellulose biofilm produced by this organism has been the subject of intense investigation due to its purity, mechanical strength, and high crystallinity. [3][4][5][6][7][8][9][10][11] These properties make bacterial cellulose useful for a variety of industrial applications. 3,[12][13][14][15] Despite decades of study, the complete cellulose biosynthetic pathway has not yet been elucidated; there is still much to learn about its regulation, export mechanisms and assembly into the crystallized form.…”

Section: Introductionmentioning

confidence: 99%

The effect of phytohormones on the growth, cellulose production and pellicle properties of Gluconacetobacter xylinus ATCC 53582

Qureshi

Sohail

Latos

et al. 2013

Acetic Acid Bacteria

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Gluconacetobacter xylinus is a plant-associated bacterium best studied for its cellulose production. Bacterial cellulose is important in facilitating plant-microbe interactions but little is known about the effect that exogenous phytohormones have on bacterial cellulose synthesis or the growth of G. xylinus. We characterized the growth, development and effect on pellicle characteristics caused by exogenous indole-3-acetic acid (IAA), gibberellic acid (GA), abscisic acid (ABA) and zeatin (Z) over a range of concentrations (1 nM to 100 μM). These phytohormones are plant growth regulators known to be involved plant development including fruit ripening and stress tolerance. Each of these hormones stimulated G. xylinus growth and influenced its pellicle characteristics. Exogenous IAA had the greatest effect on G. xylinus pellicles. Growth in IAA produced thin pellicles with very little cellulose. In general, pellicle wet weight was inversely proportional to the bacterial cellulose yield when cultures were grown in the presence of ABA, suggesting ABA influenced pellicle density and hydration. The crystallinity index, CI (IR) of cellulose produced in the presence of each phytohormone over a variety of concentrations was determined by Fourier transform infrared spectroscopy. The observed effect on cellulose crystallinity was concentration and hormone dependent. GA caused the greatest alterations in crystallinity with the highest CI (IR)=0.94 at 1 μM and the lowest CI (IR)=0.47 at 500 nM. Endogenous production of hormones by G. xylinus was investigated by high performance liquid chromatography of extracts prepared from both cell pellets and culture supernatants. We found G. xylinus synthesized GA, ABA and Z but did not produce IAA.

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“…[19][20][21][22][23][24] Cellulose microfibrils can be extracted from wood or many other plant-based materials, but pulping and bleaching processes are not environmentally friendly. 25 Cellulose whiskers can also be extracted from tunicate, a sea animal. 26 Bacterial or microbial cellulose is produced by certain bacteria belonging to the genera Acetobacter, Agrobacterium, Alcaligenes, Pseudomonas, Rhizobium, or Sarcina, the most efficient producer of bacterial cellulose being Acetobacter xylinum.…”

Section: Introductionmentioning

confidence: 99%

“…26 Bacterial or microbial cellulose is produced by certain bacteria belonging to the genera Acetobacter, Agrobacterium, Alcaligenes, Pseudomonas, Rhizobium, or Sarcina, the most efficient producer of bacterial cellulose being Acetobacter xylinum. 25 Acetobacter xylinum, an obligate aerobe, produces extracellular cellulose microfibrils to provide a firm matrix that floats and, therefore, allows the embedded bacteria to stay in close contact with the atmosphere. The produced cellulose pellicles play a great role in promoting colonisation of the cells on the substrate and provide protection against competitors.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Natural Fibers Using Bacteria: Depositing Bacterial Cellulose onto Natural Fibers To Create Hierarchical Fiber Reinforced Nanocomposites

et al. 2008

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Triggered biodegradable composites made entirely from renewable resources are urgently sought after to improve material recyclability or be able to divert materials from waste streams. Many biobased polymers and natural fibers usually display poor interfacial adhesion when combined in a composite material. Here we propose a way to modify the surfaces of natural fibers by utilizing bacteria (Acetobacter xylinum) to deposit nanosized bacterial cellulose around natural fibers, which enhances their adhesion to renewable polymers. This paper describes the process of modifying large quantities of natural fibers with bacterial cellulose through their use as substrates for bacteria during fermentation. The modified fibers were characterized by scanning electron microscopy, single fiber tensile tests, X-ray photoelectron spectroscopy, and inverse gas chromatography to determine their surface and mechanical properties. The practical adhesion between the modified fibers and the renewable polymers cellulose acetate butyrate and poly(L-lactic acid) was quantified using the single fiber pullout test.

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Research Progress in Friendly Environmental Technology for the Production of Cellulose Products (Bacterial Cellulose and Its Application)

Cited by 154 publications

References 52 publications

Creating Hierarchical Structures in Renewable Composites by Attaching Bacterial Cellulose onto Sisal Fibers

Creating Hierarchical Structures in Renewable Composites by Attaching Bacterial Cellulose onto Sisal Fibers

The effect of phytohormones on the growth, cellulose production and pellicle properties of Gluconacetobacter xylinus ATCC 53582

Surface Modification of Natural Fibers Using Bacteria: Depositing Bacterial Cellulose onto Natural Fibers To Create Hierarchical Fiber Reinforced Nanocomposites

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