Improvement of fermentative production of exopolysaccharides from Aureobasidium pullulans under various conditions

Seo, Charles; Lee, Hong Won; Suresh, Arumuganainar; Yang, Ji Won; Jung, Jae-Hong; Kim, Yeu‐Chun

doi:10.1007/s11814-014-0064-9

Cited by 33 publications

(9 citation statements)

References 18 publications

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“…Compared to plant cellulose, BNC is chemically pure since it is free from hemicellulose, pectin and lignin. The synthesis of BNC occurs via cellulose synthase enzyme at cytoplasmic membrane level by several microbial genera belonging to Acetobacter, Achromobacter, Bacillus, Sarcina, Aerobacter, Agrobacterium, Escherichia, Azotobacter, Rhizobium, Enterobacter, Klebsiella, Salmonella [136][137][138]. Due to the standardized high molecular structure and inherent nanostructure, BNC possesses multifunctionality and good mechanical properties [139].…”

Section: Bacterial Nanocellulose (Bnc)mentioning

confidence: 99%

The Use of Nanocellulose in Edible Coatings for the Preservation of Perishable Fruits and Vegetables

2021

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The usage of edible coatings (ECs) represents an emerging approach for extending the shelf life of highly perishable foods, such as fresh and fresh-cut fruits and vegetables. This review addresses, in particular, the use of reinforcing agents in film-forming solutions to tailor the physicochemical, mechanical and antimicrobial properties of composite coatings. In this scenario, this review summarizes the available data on the various forms of nanocellulose (NC) typically used in ECs, focusing on the impact of their origin and chemical or physical treatments on their structural properties (morphology and shape, dimension and crystallinity) and their functionality. Moreover, this review also describes the deposition techniques of composite ECs, with details on the food engineering principles in the application methods and formulation optimization. The critical analysis of the recent advances in NC-based ECs contributes to a better understanding of the impact of the incorporation of complex nanoparticles in polymeric matrices on the enhancement of coating properties, as well as on the increase of shelf life and the quality of fruits and vegetables.

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Section: Bacterial Nanocellulose (Bnc)mentioning

confidence: 99%

The Use of Nanocellulose in Edible Coatings for the Preservation of Perishable Fruits and Vegetables

2021

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“…Plants are the most abundant sources of cellulose, called plant cellulose (PC), which is present as lignocellulose, a tubular bundle of cellulose surrounded and entangled by hemicellulose and lignin, as well as containing some minerals [ 31 ], and it, thus, requires further processing, such as mechanical, chemical, and enzymatic treatment for the extraction of pure and high-quality cellulose [ 14 ]. On the other hand, BC is the purest form of cellulose, produced in vivo by a class of acetic acid bacteria [ 32 , 33 ] by utilizing different carbon sources and other medium components required for growth of bacteria. BC sheets are directly formed in the form of a hydrogel or membrane at the air–medium interface under aerobic conditions [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

Cost-Effective Synthesis of Bacterial Cellulose and Its Applications in the Food and Environmental Sectors

Kamal

Ul-Islam

Fatima

et al. 2022

Gels

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Bacterial cellulose (BC), also termed bio-cellulose, has been recognized as a biomaterial of vital importance, thanks to its impressive structural features, diverse synthesis routes, high thermomechanical properties, and its ability to combine with multiple additives to form composites for a wide range of applications in diversified areas. Its purity, nontoxicity, and better physico-mechanical features than plant cellulose (PC) make it a better choice for biological applications. However, a major issue with the use of BC instead of PC for various applications is its high production costs, mainly caused by the use of expensive components in the chemically defined media, such as Hestrin–Schramm (HS) medium. Furthermore, the low yield of BC-producing bacteria indirectly accounts for the high cost of BC-based products. Over the last couple of decades, extensive efforts have been devoted to the exploration of low-cost carbon sources for BC production, besides identifying efficient bacterial strains as well as developing engineered strains, developing advanced reactors, and optimizing the culturing conditions for the high yield and productivity of BC, with the aim to minimize its production cost. Considering the applications, BC has attracted attention in highly diversified areas, such as medical, pharmaceutics, textile, cosmetics, food, environmental, and industrial sectors. This review is focused on overviewing the cost-effective synthesis routes for BC production, along with its noteworthy applications in the food and environmental sectors. We have made a comprehensive review of recent papers regarding the cost-effective production and applications of BC in the food and environmental sectors. This review provides the basic knowledge and understanding for cost-effective and scaleup of BC production by discussing the techno-economic analysis of BC production, BC market, and commercialization of BC products. It explores BC applications as food additives as its functionalization to minimize different environmental hazards, such as air contaminants and water pollutants.

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“…Studies indicate that Rhizobium , Azotobacter , Agrobacterium , Salmonella , Aerobacter , Acetobacter , Achromobacter , and Escherichia sp. are the prominent genera involved in BC synthesis and/or metabolism ( Seo et al, 2014 ; Ullah et al, 2017 ; Islam et al, 2021 ). BC synthesis in N 2 -fixier Rhizobium leguminosarum , Burkholderia sp., and Pseudomonas putida is well documented.…”

Section: Introductionmentioning

confidence: 99%

Biochemistry, Synthesis, and Applications of Bacterial Cellulose: A Review

Mishra

Singh

Pattnaik

et al. 2022

Front. Bioeng. Biotechnol.

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The potential of cellulose nanocomposites in the new-generation super-performing nanomaterials is huge, primarily in medical and environment sectors, and secondarily in food, paper, and cosmetic sectors. Despite substantial illumination on the molecular aspects of cellulose synthesis, various process features, namely, cellular export of the nascent polysaccharide chain and arrangement of cellulose fibrils into a quasi-crystalline configuration, remain obscure. To unleash its full potential, current knowledge on nanocellulose dispersion and disintegration of the fibrillar network and the organic/polymer chemistry needs expansion. Bacterial cellulose biosynthesis mechanism for scaled-up production, namely, the kinetics, pathogenicity, production cost, and product quality/consistency remain poorly understood. The bottom-up bacterial cellulose synthesis approach makes it an interesting area for still wider and promising high-end applications, primarily due to the nanosynthesis mechanism involved and the purity of the cellulose. This study attempts to identify the knowledge gap and potential wider applications of bacterial cellulose and bacterial nanocellulose. This review also highlights the manufacture of bacterial cellulose through low-cost substrates, that is, mainly waste from brewing, agriculture, food, and sugar industries as well as textile, lignocellulosic biorefineries, and pulp mills.

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Improvement of fermentative production of exopolysaccharides from Aureobasidium pullulans under various conditions

Cited by 33 publications

References 18 publications

The Use of Nanocellulose in Edible Coatings for the Preservation of Perishable Fruits and Vegetables

The Use of Nanocellulose in Edible Coatings for the Preservation of Perishable Fruits and Vegetables

Cost-Effective Synthesis of Bacterial Cellulose and Its Applications in the Food and Environmental Sectors

Biochemistry, Synthesis, and Applications of Bacterial Cellulose: A Review

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