Physical and chemical modifications of cellulose fibers for food packaging applications

Saedi, Shahab; Garcia, Coralia V.; Kim, Jun Tae; Shin, Gye Hwa

doi:10.1007/s10570-021-04086-0

Cited by 51 publications

(24 citation statements)

References 105 publications

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“…The high purity of BC and its microcrystalline characteristics makes BC an interesting alternative to cellulose of plant origin (Choi and Shin 2020 ). In contrast to the cellulose synthesized by plants that accounts by far for the largest amount of cellulose processed by industry, BC is free of non-cellulosic polymers like lignin or hemicellulose (Cannon and Anderson 1991 ; Gullo et al 2018 ), while plant cellulose must be purified under costly and harsh chemical conditions (Saedi et al 2021 ). Especially acetic acid bacteria are well-known as high-level producers of microcrystalline cellulose, and this aspect was thoroughly studied (Abidi et al 2021 ; Buldum and Mantalaris 2021 ; Gullo et al 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Analysis of cellulose synthesis in a high-producing acetic acid bacterium Komagataeibacter hansenii

Bimmer

Reimer

Klingl

et al. 2023

Appl Microbiol Biotechnol

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Bacterial cellulose (BC) represents a renewable biomaterial with unique properties promising for biotechnology and biomedicine. Komagataeibacter hansenii ATCC 53,582 is a well-characterized high-yield producer of BC used in the industry. Its genome encodes three distinct cellulose synthases (CS), bcsAB1, bcsAB2, and bcsAB3, which together with genes for accessory proteins are organized in operons of different complexity. The genetic foundation of its high cellulose-producing phenotype was investigated by constructing chromosomal in-frame deletions of the CSs and of two predicted regulatory diguanylate cyclases (DGC), dgcA and dgcB. Proteomic characterization suggested that BcsAB1 was the decisive CS because of its high expression and its exclusive contribution to the formation of microcrystalline cellulose. BcsAB2 showed a lower expression level but contributes significantly to the tensile strength of BC and alters fiber diameter significantly as judged by scanning electron microscopy. Nevertheless, no distinct extracellular polymeric substance (EPS) from this operon was identified after static cultivation. Although transcription of bcsAB3 was observed, expression of the protein was below the detection limit of proteome analysis. Alike BcsAB2, deletion of BcsAB3 resulted in a visible reduction of the cellulose fiber diameter. The high abundance of BcsD and the accessory proteins CmcAx, CcpAx, and BglxA emphasizes their importance for the proper formation of the cellulosic network. Characterization of deletion mutants lacking the DGC genes dgcA and dgcB suggests a new regulatory mechanism of cellulose synthesis and cell motility in K. hansenii ATCC 53,582. Our findings form the basis for rational tailoring of the characteristics of BC. Key points • BcsAB1 induces formation of microcrystalline cellulose fibers. • Modifications by BcsAB2 and BcsAB3 alter diameter of cellulose fibers. • Complex regulatory network of DGCs on cellulose pellicle formation and motility.

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Section: Introductionmentioning

confidence: 99%

Analysis of cellulose synthesis in a high-producing acetic acid bacterium Komagataeibacter hansenii

Bimmer

Reimer

Klingl

et al. 2023

Appl Microbiol Biotechnol

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“…This is a consequence of their low price, low weight, extensive availability, printability and good mechanical properties [12,15]. However, and since there are several reviews focused on these materials [16][17][18][19], they will not be included in the present one.…”

Section: Introductionmentioning

confidence: 99%

Active Flexible Films for Food Packaging: A Review

et al. 2022

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Active food packaging is a dynamic area where the scientific community and industry have been trying to find new strategies to produce innovative packaging that is economically viable and compatible with conventional production processes. The materials used to develop active packaging can be organized into scavenging and emitting materials, and based on organic and inorganic materials. However, the incorporation of these materials in polymer-based flexible packaging is not always straightforward. The challenges to be faced are mainly related to active agents’ sensitivity to high temperatures or difficulties in dispersing them in the high viscosity polymer matrix. This review provides an overview of methodologies and processes used in the production of active packaging, particularly for the production of active flexible films at the industrial level. The direct incorporation of active agents in polymer films is presented, focusing on the processing conditions and their effect on the active agent, and final application of the packaging material. Moreover, the incorporation of active agents by coating technologies and supercritical impregnation are presented. Finally, the use of carriers to help the incorporation of active agents and several methodologies is discussed. This review aims to guide academic and industrial researchers in the development of active flexible packaging, namely in the selection of the materials, methodologies, and process conditions.

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“…Selective oxidation of cellulose, one of the most important methods of chemical modification, turned out to be a platform to obtain new high performance, versatile, cellulose-based materials, having many other applications aside the environmental ones: in biomedical engineering and healthcare [ 42 , 43 , 44 , 45 , 46 ], energy and smart materials [ 47 , 48 , 49 , 50 , 51 ], barrier applications [ 52 , 53 , 54 ], active food packaging [ 55 , 56 , 57 , 58 ]. Various methods of oxidation of carbohydrate polymers have been studied, but in the case of neutral polysaccharides (starch, cellulose) these processes evolved with low specificity and reduced yields.…”

Section: Introductionmentioning

confidence: 99%

Selective Oxidation of Cellulose—A Multitask Platform with Significant Environmental Impact

Duceac¹,

Tanasă²,

Coseri³

2022

Materials

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Raw cellulose, or even agro-industrial waste, have been extensively used for environmental applications, namely industrial water decontamination, due to their effectiveness, availability, and low production cost. This was a response to the increasing societal demand for fresh water, which made the purification of wastewater one of the major research issue for both academic and industrial R&D communities. Cellulose has undergone various derivatization reactions in order to change the cellulose surface charge density, a prerequisite condition to delaminate fibers down to nanometric fibrils through a low-energy process, and to obtain products with various structures and properties able to undergo further processing. Selective oxidation of cellulose, one of the most important methods of chemical modification, turned out to be a multitask platform to obtain new high-performance, versatile, cellulose-based materials, with many other applications aside from the environmental ones: in biomedical engineering and healthcare, energy storage, barrier and sensing applications, food packaging, etc. Various methods of selective oxidation have been studied, but among these, (2,2,6,6-tetramethylpiperidin-1-yl)oxyl) (TEMPO)-mediated and periodate oxidation reactions have attracted more interest due to their enhanced regioselectivity, high yield and degree of substitution, mild conditions, and the possibility to further process the selectively oxidized cellulose into new materials with more complex formulations. This study systematically presents the main methods commonly used for the selective oxidation of cellulose and provides a survey of the most recent reports on the environmental applications of oxidized cellulose, such as the removal of heavy metals, dyes, and other organic pollutants from the wastewater.

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Physical and chemical modifications of cellulose fibers for food packaging applications

Cited by 51 publications

References 105 publications

Analysis of cellulose synthesis in a high-producing acetic acid bacterium Komagataeibacter hansenii

Analysis of cellulose synthesis in a high-producing acetic acid bacterium Komagataeibacter hansenii

Active Flexible Films for Food Packaging: A Review

Selective Oxidation of Cellulose—A Multitask Platform with Significant Environmental Impact

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