Bacterial cellulose–alginate composite sponge as a yeast cell carrier for ethanol production

Kirdponpattara, Suchata; Phisalaphong, Muenduen

doi:10.1016/j.bej.2013.05.005

Cited by 56 publications

(31 citation statements)

References 31 publications

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“…97%). In addition, it was surprising that the change rules of the compressive and tensile strength were opposite for the CM‐BC/SA composite (similar to BCA), both of these two mechanical properties declined with the supplementation of CM‐BC, but when the content of CM‐BC was up to 75%, they increased significantly.…”

Section: Resultsmentioning

confidence: 99%

Preparation and characteristic of a sodium alginate/carboxymethylated bacterial cellulose composite with a crosslinking semi‐interpenetrating network

Lin

Zheng

Ren

et al. 2013

J of Applied Polymer Sci

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A novel ionic crosslinking sodium alginate (SA)/carboxymethylated bacterial cellulose (CM‐BC) composite with a semi‐interpenetrating polymer network (semi‐IPN) structure was developed in this study. The composite was prepared through the blending of an SA gel with CM‐BC then crosslinking by Ca2+ followed by a freeze‐drying process. Scanning electron microscopy showed the composite matrix organized in a three‐dimensional network of CM‐BC interpenetrated against SA molecular chains with a quantity of calcium alginate microspheres upon the surface. The swelling ratios of the composite were enhanced by 183, 198, and 212% with the supplementation of CM‐BC weight fractions of 25, 50, and 75%, respectively; the swelling ratios changed with changing pH. The tensile modulus, tensile strength, and elongation at break of SA were enhanced by 165, 152, and 188%, respectively, with the addition of 50 wt % CM‐BC. This study demonstrated that the semi‐IPN structure dramatically changed the swelling and mechanical properties of the composite, and the semi‐IPN will be a promising candidate for biomedical applications such as wound dressings and skin tissue engineering. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 39848.

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Section: Resultsmentioning

confidence: 99%

Preparation and characteristic of a sodium alginate/carboxymethylated bacterial cellulose composite with a crosslinking semi‐interpenetrating network

Lin

Zheng

Ren

et al. 2013

J of Applied Polymer Sci

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“…Immobilization provides enhanced ethanol productivity in many ways. These include reduction of contamination; [35][36][37] easy separation of cell mass from the liquid medium; 36 enhanced stability of ethanol production; 38 reduced production costs; 39,40 decreased fermentation times; 34 providing cells for several cycles of fermentation; 41 and providing good barriers against inhibitors. 38 Disadvantages of immobilization may include gel degradation, significant substrate and product mass transfer limitation, and gel particle distruption due to CO 2 production and leakage of microorganisms.…”

Section: Introductionmentioning

confidence: 99%

“…These include reduction of contamination; [35][36][37] easy separation of cell mass from the liquid medium; 36 enhanced stability of ethanol production; 38 reduced production costs; 39,40 decreased fermentation times; 34 providing cells for several cycles of fermentation; 41 and providing good barriers against inhibitors. 38 Disadvantages of immobilization may include gel degradation, significant substrate and product mass transfer limitation, and gel particle distruption due to CO 2 production and leakage of microorganisms. 42 Immobilization of the major ethanol producers S. cerevisiae and Z. mobilis for ethanol production has been investigated using various substrates including mahula flowers, 43 molasses, 44 starchy sweet potato, 45 and cassava.…”

Section: Introductionmentioning

confidence: 99%

Effective ethanol production from whey powder through immobilizedE. coliexpressingVitreoscillahemoglobin

2016

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Ethanol production from whey powder was investigated by using free as well as alginate immobilized E. coli and E. coli expressing Vitreoscilla hemoglobin (VHb) in both shake flask and fermenter cultures. Media with varying levels of whey (lactose contents of 3%, 5%, 8% or 15%) and yeast extract (0.3% or 0.5%) were evaluated with fermentation times of 48-96 h. Immobilization and VHb expression resulted in higher ethanol production with all media; the increases ranged from 2% to 89% for immobilization and from 2% to 182% for VHb expression. It was determined that growth medium containing 8% lactose with 0.5% yeast extract yielded the highest ethanol production for free or immobilized strains, with or without VHb expression, in both shake flask and fermenter cultures. Immobilization with alginate was found to be a promising process for ethanol production by VHb-expressing ethanologenic E. coli.

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“…Meanwhile, bioethanol yield on free cells system was only 8.0% (v/v) for 74.4% of total sugar consumed [36]. Bioethanol concentration with the immobilized cells system in cellulose-alginate membrane was 92.1 g/L, while the free cell was only 87.9 g/L [7].…”

Section: Immobilization Of Yeast Cells To Sugarcane Bagassementioning

confidence: 97%

“…The current bioethanol research is mostly focused on reducing the costs of production and improving feedstock pretreatment, saccharification, and the fermentation process [4]. Immobilized cell technology has been recommended as an alternative and an effective method for improving bioethanol fermentation [5][6][7]. Immobilized cell can improve the productivity of bioethanol by two or three times by increasing the cell density [8].…”

Section: Introductionmentioning

confidence: 99%

Sugarcane Bagasse as a Carrier for the Immobilization of Saccharomyces cerevisiaein Bioethanol Production

Anita¹,

Mangunwardoyo²,

Yopi³

2016

MST

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Bacterial cellulose–alginate composite sponge as a yeast cell carrier for ethanol production

Cited by 56 publications

References 31 publications

Preparation and characteristic of a sodium alginate/carboxymethylated bacterial cellulose composite with a crosslinking semi‐interpenetrating network

Preparation and characteristic of a sodium alginate/carboxymethylated bacterial cellulose composite with a crosslinking semi‐interpenetrating network

Effective ethanol production from whey powder through immobilizedE. coliexpressingVitreoscillahemoglobin

Sugarcane Bagasse as a Carrier for the Immobilization of Saccharomyces cerevisiaein Bioethanol Production

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