Studies on bacterial cellulose produced by a novel strain of Lactobacillus genus

Khan, Hina; Kadam, Ashish; Dutt, Dharm

doi:10.1016/j.carbpol.2019.115513

Cited by 89 publications

(46 citation statements)

References 45 publications

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“…XRD patterns shown in Figure 5 represents the spectra obtained for the pure, modi ed samples. All samples showed peaks typical of cellulose I allomorph at lattice planes of 110, 1-10, and 200 corresponding to 2θ values of 14.6 º, 16.6 º, and 22.6 º, respectively as previously reported [32,34,48,49]. Distinctive peaks with different intensities obtained at diffraction planes of 130, 042 and 040 corresponding to 2θ values of 19.4 º, 26.1 º and 34.3 º appear only on the modi ed samples, thus attributed to the CA crosslinking of the BC [50].…”

Section: X-ray Diffraction (Xrd)supporting

confidence: 80%

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Catalyst-Free Crosslinking Modification of Nata-De-Coco-Based Bacterial Cellulose Nanofibers Using Citric Acid

Salihu

Razak

Zawawi

et al. 2021

Preprint

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Bacterial cellulose (BC) has gained research attention in materials science and biomedicine due to its fascinating properties. BCs' fiber collapse phenomenon (inability to reabsorb water after dehydration) is one of the drawbacks that limit its potentials. To overcome this, a catalyst-free thermal crosslinking reaction was employed to modify the BC using citric acid (CA) without compromising the biocompatibility. Properties evaluation of the modified BC (MBC) by FTIR, XRD, SEM/EDX, TGA, and Tensile analysis confirmed the fiber crosslinking and improvement of some properties that could be advantageous for various applications. The modified nanofiber seems to maintain its inherent crystallinity and thermal stability with an increased water absorption/swelling and tensile modulus. The resulting MBC reported here can be relevant for wound dressings and tissue scaffolding.

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Section: X-ray Diffraction (Xrd)supporting

confidence: 80%

“…Scans were made between angle 2θ of 10 º to 60 º at a speed of 3 º/min. The crystallinity index (CrI), the crystallite size (CS) and crystal allomorphs of cellulose I were calculated from the data using equations 1, 2 & 3, respectively [32].…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

Catalyst-Free Crosslinking Modification of Nata-De-Coco-Based Bacterial Cellulose Nanofibers Using Citric Acid

Salihu

Razak

Zawawi

et al. 2021

Preprint

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“…In the context of protection against adverse conditions, the S-surface layer plays an important role due to its stability at various pH and resistance to temperature, radiation, and proteolysis 9 . In addition, as shown by recent studies, L. hilgardii is likely to produce bacterial cellulose, which can considerably increase resistance to the sterilizing agent 10 . In comparison with other wine bacteria such as Pediococcus pentosaceus and Oenococcus oeni , L. hilgardii exhibits higher resistance to flavonoids and phenolic acids 11 .…”

Section: Introductionmentioning

confidence: 91%

Morphological and physiological changes in Lentilactobacillus hilgardii cells after cold plasma treatment

Niedźwiedź

Juzwa

Skrzypiec

et al. 2020

Sci Rep

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Atmospheric cold plasma (ACP) inactivation of Lentilactobacillus hilgardii was investigated. Bacteria were exposed to ACP dielectric barrier discharge with helium and oxygen as working gases for 5, 10, and 15 min. The innovative approach in our work for evaluation of bacterial survival was the use in addition to the classical plate culture method also flow cytometry which allowed the cells to be sorted and revealed different physiological states after the plasma treatment. Results showed total inhibition of bacterial growth after 10-min of ACP exposure. However, the analysis of flow cytometry demonstrated the presence of 14.4% of active cells 77.5% of cells in the mid-active state and 8.1% of dead cells after 10 min. In addition, some of the cells in the mid-active state showed the ability to grow again on culture medium, thus confirming the hypothesis of induction of VBNC state in L .hilgardii cells by cold plasma. In turn, atomic force microscopy (AFM) which was used to study morphological changes in L. hilgardii after plasma treatment at particular physiological states (active, mid-active, dead), showed that the surface roughness of the mid-active cell (2.70 ± 0.75 nm) was similar to that of the control sample (2.04 ± 0.55 nm). The lack of considerable changes on the cell surface additionally explains the effective cell resuscitation. To the best of our knowledge, AFM was used for the first time in this work to analyze cells which have been sorted into subpopulations after cold plasma treatment and this is the first work indicating the induction of VBNC state in L. hilgardii cells after exposure to cold plasma.

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“…Nanocellulose refers to the cellulosic materials with dimensions in the nanoscale range, which combines the important properties of cellulose with the features of nanomaterials (Mazhar et al, 2021). It is obtained from plants ( de Amorim et al, 2020), produced by different microorganisms predominantly from acetic acid bacteria (Andriani et al, 2020;Khan et al, 2020b), algae (Liu et al, 2017), and animals (Bacakova et al, 2019), as well as synthesized enzymatically such as by the cell-free enzyme systems (Ullah et al, 2015;Kim et al, 2019). There exist different types of nanocellulose, including cellulose nanofibers (CNFs), cellulose nanocrystals (CNCs), and microorganisms-derived cellulose knows as bacterial nanocellulose (BNC) or bacterial cellulose (BC) (Klemm et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Perspective Applications and Associated Challenges of Using Nanocellulose in Treating Bone-Related Diseases

Khan

Siddique

Huanfei

et al. 2021

Front. Bioeng. Biotechnol.

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Bone serves to maintain the shape of the human body due to its hard and solid nature. A loss or weakening of bone tissues, such as in case of traumatic injury, diseases (e.g., osteosarcoma), or old age, adversely affects the individual’s quality of life. Although bone has the innate ability to remodel and regenerate in case of small damage or a crack, a loss of a large volume of bone in case of a traumatic injury requires the restoration of bone function by adopting different biophysical approaches and chemotherapies as well as a surgical reconstruction. Compared to the biophysical and chemotherapeutic approaches, which may cause complications and bear side effects, the surgical reconstruction involves the implantation of external materials such as ceramics, metals, and different other materials as bone substitutes. Compared to the synthetic substitutes, the use of biomaterials could be an ideal choice for bone regeneration owing to their renewability, non-toxicity, and non-immunogenicity. Among the different types of biomaterials, nanocellulose-based materials are receiving tremendous attention in the medical field during recent years, which are used for scaffolding as well as regeneration. Nanocellulose not only serves as the matrix for the deposition of bioceramics, metallic nanoparticles, polymers, and different other materials to develop bone substitutes but also serves as the drug carrier for treating osteosarcomas. This review describes the natural sources and production of nanocellulose and discusses its important properties to justify its suitability in developing scaffolds for bone and cartilage regeneration and serve as the matrix for reinforcement of different materials and as a drug carrier for treating osteosarcomas. It discusses the potential health risks, immunogenicity, and biodegradation of nanocellulose in the human body.

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Studies on bacterial cellulose produced by a novel strain of Lactobacillus genus

Cited by 89 publications

References 45 publications

Catalyst-Free Crosslinking Modification of Nata-De-Coco-Based Bacterial Cellulose Nanofibers Using Citric Acid

Catalyst-Free Crosslinking Modification of Nata-De-Coco-Based Bacterial Cellulose Nanofibers Using Citric Acid

Morphological and physiological changes in Lentilactobacillus hilgardii cells after cold plasma treatment

Perspective Applications and Associated Challenges of Using Nanocellulose in Treating Bone-Related Diseases

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