The Importance of TCA Cycle Related Acids in Bacterial Cellulose Production

Premjet, Siripong; Shimamoto, Akira; Ohtani, Yoshito; Sameshima, Kazuhiko

doi:10.2115/fiber.55.7

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…While bacterial cellulose is being produced, this change in acidity can be difficult to control by the pH buffer system, as has been observed by some investigators [17,18]. This pH reduction was also observed in the Hestrin-Schramm medium when cultured with the same strains (TISTR 893,975) in molasses, as reported by Premjet et al [19]. When coconut juice was the substrate, the highest acetic acid concentration was found in TISTR 975, with a 24.96-fold increase (Fig.…”

Section: Acetobacter Xylinum Tistr 998supporting

confidence: 52%

Bacterial Cellulose Production by Acetobacter xylinum Strains from Agricultural Waste Products

Kongruang

2008

Appl Biochem Biotechnol

156

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Bacterial cellulose is a biopolysaccharide produced from the bacteria, Acetobacter xylinum. Static batch fermentations for bacterial cellulose production were studied in coconut and pineapple juices under 30 degrees C in 5-l fermenters by using three Acetobacter strains: A. xylinum TISTR 998, A. xylinum TISTR 975, and A. xylinum TISTR 893. Experiments were carried out to compare bacterial cellulose yields along with growth kinetic analysis. Results showed that A. xylinum TISTR 998 produced a bacterial cellulose yield of 553.33 g/l, while A. xylinum TISTR 893 produced 453.33 g/l and A. xylinum TISTR 975 produced 243.33 g/l. In pineapple juice, the yields for A. xylinum TISTR 893, 975, and 998 were 576.66, 546.66, and 520 g/l, respectively. The strain TISTR 998 showed the highest productivity when using coconut juice. Morphological properties of cellulose pellicles, in terms of texture and color, were also measured, and the textures were not significantly different among treatments.

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Section: Acetobacter Xylinum Tistr 998supporting

confidence: 52%

Bacterial Cellulose Production by Acetobacter xylinum Strains from Agricultural Waste Products

Kongruang

2008

Appl Biochem Biotechnol

156

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“…Several agricultural and industrial wastes and byproducts (e.g. glycerol‐rich product from the biodiesel industry, lignocellulosic materials, cheese whey, molasses) have also been proposed as substrates for microbial cultivation as a strategy to lower polysaccharides production costs . The selling prices for the commonly used substrates for production of most microbial polysaccharides, sugar and starch, are currently around 350 to 518 US$/ton (http://www.sugaronline.com) and 279 to 310 US$/ton (http://www.indexmundi.com), respectively.…”

Section: Bioproduction and Downstream Processingmentioning

confidence: 99%

Microbial polysaccharide‐based membranes: Current and future applications

Freitas

Alves

Reis

et al. 2013

J of Applied Polymer Sci

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Microbial polysaccharides are characterized by high molecular structure variability which translates into a wide range of different properties offering interesting opportunities for application in many different areas, including membrane-based products and processes. Due to their new or improved properties, microbial polysaccharides can replace plant, algae, and animal products, either in their traditional or in new applications. The main constraint to their wider use is the production costs that are still higher than that of other natural and synthetic polymers. The current applications of microbial polysaccharide membranes in medical, food, and industrial processes are outlined. The limitations still faced by these membranes and the requirements for obtaining innovative products and processes are also addressed.

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“…Since 1996, the effects of the tricarboxylic acid (TCA) cycle related organic acid on BC production has been reported (Matsuoka et al, 1996;Naritomi et al, 1998;Premjet et al, 1999). Supplementing organic acid such as pyruvate, succinate, acetate and lactate to the medium increase the BC yield.…”

Section: Historical Overviewmentioning

confidence: 99%