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Chao, Yaping; Sugano, Yasushi; Kouda, Tohru; Yoshinaga, Fumihiro; Shoda, Makoto

doi:10.1023/a:1018433526709

Cited by 48 publications

(10 citation statements)

References 5 publications

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“…1) Nozzle for inoculation, 2) gas outlet, 3) nozzles, 4) sensor nozzle, 5) inlet water temperature controller, 6) outlet water temperature controller, 7) sampling nozzle, 8) temperature sensor, 9) drain, 10) observatory window, and 11) draft tube. Obtained from Chao et al with permission . Copyright 1997, Springer Verlag.…”

Section: Bioreactor Systems For Bc Productionmentioning

confidence: 99%

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More Than Meets the Eye in Bacterial Cellulose: Biosynthesis, Bioprocessing, and Applications in Advanced Fiber Composites

et al. 2013

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Bacterial cellulose (BC) nanofibers are one of the stiffest organic materials produced by nature. It consists of pure cellulose without the impurities that are commonly found in plant-based cellulose. This review discusses the metabolic pathways of cellulose-producing bacteria and the genetic pathways of Acetobacter xylinum. The fermentative production of BC and the bioprocess parameters for the cultivation of bacteria are also discussed. The influence of the composition of the culture medium, pH, temperature, and oxygen content on the morphology and yield of BC are reviewed. In addition, the progress made to date on the genetic modification of bacteria to increase the yield of BC and the large-scale production of BC using various bioreactors, namely static and agitated cultures, stirred tank, airlift, aerosol, rotary, and membrane reactors, is reviewed. The challenges in commercial scale production of BC are thoroughly discussed and the efficiency of various bioreactors is compared. In terms of the application of BC, particular emphasis is placed on the utilization of BC in advanced fiber composites to manufacture the next generation truly green, sustainable and renewable hierarchical composites.

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Section: Bioreactor Systems For Bc Productionmentioning

confidence: 99%

“…[133] In this reactor the bacteria attached themselves onto a rotating drum/disk and the rotating motion of the drum/ disk enable the bacteria to have good contact with both air and the culture medium. One problem associated with this [126] Copyright 1997, Springer Verlag.…”

Section: Aerosol Bioreactormentioning

confidence: 99%

More Than Meets the Eye in Bacterial Cellulose: Biosynthesis, Bioprocessing, and Applications in Advanced Fiber Composites

et al. 2013

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“…The widely used medium of fructose and corn steep liquor was used in shake cultures achieving production of 5-8 g/L [11]. Furthermore, a production of 7-9.2 g/L was achieved in conventional stirred tank bioreactors, while lower yields of 5.6-6.4 g/L were obtained in airlift bioreactors [9,[11][12][13]. D-xylose medium has also been used to produce BC, which achieved lower production rates than fructose [14].…”

Section: Introductionmentioning

confidence: 99%

Potential of Biocellulose Nanofibers Production from Agricultural Renewable Resources: Preliminary Study

Dahman

Jayasuriya

Kalis

2010

Appl Biochem Biotechnol

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In the present preliminary study, we report results for the biocellulose nanofibres production by Gluconacetobacter xylinus. Production was examined by utilizing different feedstocks of single sugars and sugar mixtures with compositions similar to the acid hydrolyzates of different agriculture residues. Profiles for cell proliferation, sugar consumption, and the subsequent pH changes were thoroughly analyzed. Highest biocellulose production of 5.65 g/L was achieved in fructose medium with total sugar consumption of 95.57%. Moreover, the highest production using sugar mixtures was 5.2 g/L, which was achieved in feedstock with composition identical to the acid hydrolyzate of wheat straws. This represented the highest biocellulose yield of 17.72 g/g sugars compared with 14.77 g/g fructose. The lowest production of 1.1 and 1.75 g/L were obtained in xylose and glucose media, respectively, while sucrose and arabinose media achieved relatively higher production of 4.7 and 4.1 g/L, respectively. Deviation in pH of the fermentation broths from the optimum value of 4-5 generally had marked effect on biocellulose production with single sugars in feedstock. However, the final pH values recorded in the different sugar mixtures were approximately 3.3-3.4, which had lower effect on production hindrance. Analyzing profiles for sugars' concentrations and cell growth showed that large amount of the metabolized sugars were mainly utilized for bacterial cell growth and maintenance, rather than biocellulose production. This was clearly observed with single sugars of low production, while sugar consumption was rather utilized for biocellulose production with sugar mixtures. Results reported in this study demonstrate that agriculture residues might be used as potential feedstocks for the biocellulose nanofibres production. Not only this represents a renewable source of feedstock, but also might lead to major improvements in production if proper supplements and control were utilized in the fermentation process.

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“…2. Plate count agar was first prepared using 0.6% glucose, 0.8% bacto-peptone, 2.5% yeast (Chao et al 1997), and 2.5 g of agar, which was dissolved in distilled water (neutral pH). The same recipe was used as the diluting solvent but without agar.…”

Section: Colony Countmentioning

confidence: 99%

“…The same recipe was used as the diluting solvent but without agar. The broth was then sterilized for 9 h, spread on six plates, and allowed to settle for 12 h (Chao et al 1997). The number of plates corresponded to the amount of medium to be used in calculating the number of replications and dilutions (Carvalhal et al 1991).…”

Section: Colony Countmentioning

confidence: 99%

Rice Bran, an Alternative Nitrogen Source for Acetobacter xylinum Bacterial Cellulose Synthesis

et al. 2018

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Rice bran was introduced as an alternative nitrogen source to Hestrin and Schramm (HS) medium in HS Acetobacter xylinum culture media in bacterial cellulose (B.C) synthesis. The results indicated an unchanged composition of crude protein per increase in incubation days while diluted protein increased with incubation period. Fourier transform infrared spectroscopy (FTIR) results showed the absorbance of OH groups. It was confirmed that the BC yield was directly proportional to the rice bran content. A general observation indicated a gradual transformation from a highly crystalline structure to a very amorphous structure as rice bran content increased with the endothermic decomposition of samples being recorded between 113.5 °C and 125.6 °C.

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Untitled

Cited by 48 publications

References 5 publications

More Than Meets the Eye in Bacterial Cellulose: Biosynthesis, Bioprocessing, and Applications in Advanced Fiber Composites

More Than Meets the Eye in Bacterial Cellulose: Biosynthesis, Bioprocessing, and Applications in Advanced Fiber Composites

Potential of Biocellulose Nanofibers Production from Agricultural Renewable Resources: Preliminary Study

Rice Bran, an Alternative Nitrogen Source for Acetobacter xylinum Bacterial Cellulose Synthesis

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