Bacterial cellulose I. Two-stage fermentation process for cellulose production by Acetobacter aceti

Okiyama, Atsushi; Shirae, Hideyuki; Kanō, Hideo; Yamanaka, Shigeru

doi:10.1016/s0268-005x(09)80032-5

Cited by 67 publications

(33 citation statements)

References 8 publications

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“…However, this requires a large area and a long culture time [3]. Therefore, for economical BC production, it is necessary to establish a mass production system using shaking culture technique.…”

Section: Introductionmentioning

confidence: 99%

Production and Characterization of Cellulose by Acetobacter sp. V6 Using a Cost-Effective Molasses–Corn Steep Liquor Medium

Jung

Lee

Jeong

et al. 2009

Appl Biochem Biotechnol

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In order to reduce of the manufacturing cost of bacterial cellulose (BC), BC production by Acetobacter sp. V6 was investigated in shaking culture using molasses and corn steep liquor (CSL) as the sole carbon and nitrogen sources, respectively. The highest BC production was obtained with Ca3(PO4)2-treated molasses. Maximum BC yield (2.21+/-0.04 g/l) was obtained at 5% (w/v) total sugar in molasses. In improved medium containing molasses and CSL, BC production was observed in the medium after 1 day of incubation and increased rapidly thereafter with maximum yield (3.12+/-0.03 g/l) at 8 days. This value was approximately twofold higher than the yield in the complex medium. Physical properties of BC from the complex and molasses media were studied using Fourier-transform infrared (FT-IR) spectroscopy and X-ray diffractometer. By FT-IR, all the BC were found to be of cellulose type I, the same as typical native cellulose. The relative crystallinity of BC produced in the complex and molasses media were 83.02 and 67.27%, respectively. These results suggest that molasses and CSL can be useful low-cost substrates for BC production by Acetobacter sp. V6 without supplementation with expensive nitrogen complexes such as yeast extract and polypeptone, leading to the reduction in the production costs.

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Section: Introductionmentioning

confidence: 99%

Production and Characterization of Cellulose by Acetobacter sp. V6 Using a Cost-Effective Molasses–Corn Steep Liquor Medium

Jung

Lee

Jeong

et al. 2009

Appl Biochem Biotechnol

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“…A gelatinous BC pellicle produced by Gluconacetobacter xylinus has a denser surface at the air interface. The BC production is directly related to the surface area of the air/liquid interface, provided that the depth is less than 4.5 cm [53]. The BC pellicle floats on the liquid surface due to the entrapped CO 2 generated from bacterial metabolism [54].…”

Section: Static Culturesmentioning

confidence: 99%

Synthesis, Chemistry, and Medical Application of Bacterial Cellulose Nanocomposites

Ul-Islam

Khan

Khattak

et al. 2015

Advanced Structured Materials

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Bacterial cellulose (BC), an environmental friendly polymeric material, has recently received immense attention in the human society. Herein, we have focused on the biosynthesis, chemical structure, and physiological behavior of BC along with synthetic routes and medical applications of its nanocomposites. The structure of BC consists of nanofibrils made up of (1 → 4) β-glycosidic linked glucose units interconnected through intra-and intermolecular hydrogen bonds. The interconnected 3D network structure of BC nanofibers with a high degree of nanoporosity makes BC an ideal candidate for the incorporation of nanomaterials to form reinforced composites. BC nanocomposites have been synthesized through a number of routes that have not only improved the existing properties of BC, but also enhanced it with novel features. Among nanomaterials, metal, metal oxides, and organic nanomaterials have been effectively used to engender antimicrobial, biocompatible, conductive, and magnetic properties in BC. BC nanocomposites have been successfully employed in the medical field and have shown a high clinical value for wound healing and skin tissue repair. Recent interest has been focused on designing ideal biomedical devices like artificial skin and artificial blood vessels from BC. This study will provide an extensive background about the primary features of BC and discuss the synthetic routes and chemical feasibility of BC nanocomposites along with their current and future application in the medical field.

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“…Cellulose nanofibres obtained under agitated conditions are more suitable for a number of industrial applications, both in wet and in disintegrated form, than those obtained under static conditions, in which the BC forms as pellicles at the air/liquid interface. 30,31 Although it has been proven to produce successful commercial cellulose products on a small scale, such as nata de coco, transducer diaphragms, wound-care and dressing materials, largescale production of these products is not suitable since it is labour intensive and requires a large surface area. 27 Under agitated conditions, BC can be produced in the form of a fibrous suspension, irregular masses, pellets, or spheres.…”

Section: Effect Of the Type Of Reactor On Productionmentioning

confidence: 99%

“…Since the biocellulose can be produced as a highly pure material, it has received attention as a new functional material with several industrial applications. When arranged in the form of a sheet, BC has high crystallinity and is comprised of ultrafine fibres that have high Young's modulus (15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30). The biocelullose nanofibres have a water-holding capacity up to 100 times their weight.…”

Section: Introductionmentioning

confidence: 99%

Improvements in the production of bacterial synthesized biocellulose nanofibres using different culture methods

Sani

Dahman

2009

J of Chemical Tech & Biotech

111

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This review summarizes previous work that was done to improve the production of bacterial cellulose nanofibres. Production of biocellulose nanofibres is a subject of interest owing to the wide range of unique properties that makes this product an attractive material for many applications. Bacterial cellulose is a natural nanomaterial that has a native dimension of less than 50 nm in diameter. It is produced in the form of nanofibres, yielding a very pure cellulose product with unique physical properties that distinguish it from plant-derived cellulose. Its high surface-to-volume ratio combined with its unique properties such as poly-functionality, hydrophilicity and biocompatibility makes it a potential material for applications in the biomedical field. The purpose of this review is to summarize the methods that might help in delivering microbial cellulose to the market at a competitive cost. Different feedstocks in addition to different bioreactor systems that have been previously used are reviewed. The main challenge that exists is the low yield of the cellulosic nanofibres, which can be produced in static and agitated cultures. The static culture method has been used for many years. However, the production cost of this nanomaterial in bioreactor systems is less expensive than the static culture method. Biosynthesis in bioreactors will also be less labour intensive when scaled up. This would improve developing intermediate fermentation scale-up so that the conversion to an efficient large-scale fermentation technology will be an easy task.

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Bacterial cellulose I. Two-stage fermentation process for cellulose production by Acetobacter aceti

Cited by 67 publications

References 8 publications

Production and Characterization of Cellulose by Acetobacter sp. V6 Using a Cost-Effective Molasses–Corn Steep Liquor Medium

Production and Characterization of Cellulose by Acetobacter sp. V6 Using a Cost-Effective Molasses–Corn Steep Liquor Medium

Synthesis, Chemistry, and Medical Application of Bacterial Cellulose Nanocomposites

Improvements in the production of bacterial synthesized biocellulose nanofibres using different culture methods

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