Comparison of bacterial nanocellulose produced by different strains under static and agitated culture conditions

Gao, Hongliang; Sun, Qian; Han, Zebei; Li, Jiahe; Liao, Bowen; Hu, Lulu; Huang, Jie; Zou, Chunjing; Chen, Jia; Huang, Jing; Chang, Zhongyi; Jiang, Deming; Jin, Mei

doi:10.1016/j.carbpol.2019.115323

Cited by 58 publications

(31 citation statements)

References 39 publications

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“…With regards to cellulose's natural nano-structure, various methods can be employed to discover the characteristics of its structure through obtaining three different forms of nanocellulose such as cellulose nanocrystals (CNC), otherwise known as whiskers or microcrystallites, micro-fibrillated cellulose (MFC), also denoted as cellulose nanofiber (CNF), or nano-fibrillated cellulose (NFC) (Kaboorani and Riedl, 2015), and bacterial nanocellulose (BNC) (Gao et al, 2020). These three different forms of nanocellulose vary in their morphology (Liu et al, 2016).…”

Section: Properties and Surface Modification Of Nanocellulose Charactmentioning

confidence: 99%

Nanocellulose: From Fundamentals to Advanced Applications

et al. 2020

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Over the past few years, nanocellulose (NC), cellulose in the form of nanostructures, has been proved to be one of the most prominent green materials of modern times. NC materials have gained growing interests owing to their attractive and excellent characteristics such as abundance, high aspect ratio, better mechanical properties, renewability, and biocompatibility. The abundant hydroxyl functional groups allow a wide range of functionalizations via chemical reactions, leading to developing various materials with tunable features. In this review, recent advances in the preparation, modification, and emerging application of nanocellulose, especially cellulose nanocrystals (CNCs), are described and discussed based on the analysis of the latest investigations (particularly for the reports of the past 3 years). We start with a concise background of cellulose, its structural organization as well as the nomenclature of cellulose nanomaterials for beginners in this field. Then, different experimental procedures for the production of nanocelluloses, their properties, and functionalization approaches were elaborated. Furthermore, a number of recent and emerging uses of nanocellulose in nanocomposites, Pickering emulsifiers, wood adhesives, wastewater treatment, as well as in new evolving biomedical applications are presented. Finally, the challenges and opportunities of NC-based emerging materials are discussed.

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Section: Properties and Surface Modification Of Nanocellulose Charactmentioning

confidence: 99%

Nanocellulose: From Fundamentals to Advanced Applications

et al. 2020

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“…There are many reports where static and agitated conditions have been analyzed for cellulose production by Komagataeibacter as well as other bacteria such as Rhodococcus sp. where static culture invariably gave higher yield as compared to agitated cultures [ 53 , 54 ]; however, few reports of higher BC yield with agitated culture have been reported as compared to static culture [ 55 ]. It is possible for Cel-mutants to regain their cellulose-producing ability without shaking under optimal conditions due to reversible phenotypic switch [ 56 ].…”

Section: Genetic Modification For Enhanced/regulated Bc Productionmentioning

confidence: 99%

Genetic modification for enhancing bacterial cellulose production and its applications

et al. 2021

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Bacterial cellulose (BC) is higher in demand due to its excellent properties which is attributed to its purity and nano size. Komagataeibacter xylinum is a model organism where BC production has been studied in detail because of its higher cellulose production capacity. BC production mechanism shows involvement of a series of sequential reactions with enzymes for biosynthesis of cellulose. It is necessary to know the mechanism to understand the involvement of regulatory proteins which could be the probable targets for genetic modification to enhance or regulate yield of BC and to alter BC properties as well. For the industrial production of BC, controlled synthesis is desired so as to save energy, hence genetic manipulation opens up avenues for upregulating or controlling the cellulose synthesis in the bacterium by targeting genes involved in cellulose biosynthesis. In this review article genetic modification has been presented as a tool to introduce desired changes at genetic level resulting in improved yield or properties. There has been a lack of studies on genetic modification for BC production due to limited availability of information on whole genome and genetic toolkits; however, in last few years, the number of studies has been increased on this aspect as whole genome sequencing of several Komagataeibacter strains are being done. In this review article, we have presented the mechanisms and the targets for genetic modifications in order to achieve desired changes in the BC production titer as well as its characteristics.

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“…Those dimensionally stable BC hydrogel membranes can be applied as wet wound dressings directly after purification and sterilization without further processing [34]. However, since the selected bacteria strain, as well as the biotechnological production process, can influence the key characteristics and material properties, it is important to independently investigate the suitability of each strain for the intended application [35]. For the strain Komagataeibacter xylinus DSM 14666 (see Methods section), an extensive basis of experimental data for the mentioned properties is already available from previous works.…”

Section: Introductionmentioning

confidence: 99%

Bacterial Cellulose—Adaptation of a Nature-Identical Material to the Needs of Advanced Chronic Wound Care

Zahel

Beekmann

Eberlein³

et al. 2022

Pharmaceuticals

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Modern wound treatment calls for hydroactive dressings. Among the variety of materials that have entered the field of wound care in recent years, the carbohydrate polymer bacterial cellulose (BC) represents one of the most promising candidates as the biomaterial features a high moisture-loading and donation capacity, mechanical stability, moldability, and breathability. Although BC has already gained increasing relevance in the treatment of burn wounds, its potential and clinical performance for “chronic wound” indications have not yet been sufficiently investigated. This article focuses on experimental and clinical data regarding the application of BC within the indications of chronic, non-healing wounds, especially venous and diabetic ulcers. A recent clinical observation study in a chronic wound setting clearly demonstrated its wound-cleansing properties and ability to induce healing in stalling wounds. Furthermore, the material parameters of BC dressings obtained through the static cultivation of Komagataeibacter xylinus were investigated for the first time in standardized tests and compared to various advanced wound-care products. Surprisingly, a free swell absorptive capacity of a BC dressing variant containing 97% moisture was found, which was higher than that of alginate or even hydrofiber dressings. We hypothesize that the fine-structured, open porous network and the resulting capillary forces are among the main reasons for this unexpected result.

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Comparison of bacterial nanocellulose produced by different strains under static and agitated culture conditions

Cited by 58 publications

References 39 publications

Nanocellulose: From Fundamentals to Advanced Applications

Nanocellulose: From Fundamentals to Advanced Applications

Genetic modification for enhancing bacterial cellulose production and its applications

Bacterial Cellulose—Adaptation of a Nature-Identical Material to the Needs of Advanced Chronic Wound Care

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