Development of Bacterial Cellulose Membranes Incorporated with Plant Extracts

Neves, Eduarda Zeni; Junior, Sandro Rogério Kumineck; Katrucha, Graziéli Paulino; Silveira, Victória Fonseca; Silveira, Marcia Luciane Lange; Pezzin, Ana Paula Testa; Schneider, A.; Garcia, Michele Cristina Formolo; Apati, Giannini Pasiznick

doi:10.1002/masy.202200031

Cited by 3 publications

(1 citation statement)

References 39 publications

(49 reference statements)

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“…NEVES et al [16] successfully explored the association between plant extracts and BC membranes in his studies. In your studies, membranes incorporated with Barbatimão extract showed antimicrobial activity against Escherichia coli and Pseudomonas aeruginosa, microorganisms usually found in wounds.…”

Section: Introductionmentioning

confidence: 99%

Development and characterization of bacterial cellulose membrane incorporated with Witch hazel extract

et al. 2023

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Bacterial cellulose (BC) has stood out in the biomedical field for its biocompatibility, non-toxicity and high liquid absorption capacity. Thus, studies have been conducted aiming at the functionalization of BC with substances that add properties, such as anti-inflammatory and antimicrobial action. Hamamelis virginiana plant extract is known for its astringent, anti-inflammatory and antimicrobial properties. Thus, the present work aimed to incorporate aqueous (AE) and glycolic (GE) extracts of witch hazel in different concentrations to BC, aiming at its application as a curative. BC membranes incorporated with the extracts were characterized by thermogravimetric analysis (TGA), Fourier transforms infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and antimicrobial activity. The TGA results indicated a reduction in thermal stability and the appearance of a new stage of degradation in the samples that underwent incorporation. Furthermore, the FTIR showed the presence of aromatic compounds not found in the BC, corroborating the TGA. The micrographs revealed that the incorporation of the extracts resulted in the formation of a film on the surface of the membranes, covering the nanofibers. These results show that incorporating the aqueous and glycol extracts in the BC membrane was successful. However, despite the crude extracts' antimicrobial potential, antimicrobial activity in the functionalized BC samples was not observed.

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Section: Introductionmentioning

confidence: 99%

Development and characterization of bacterial cellulose membrane incorporated with Witch hazel extract

et al. 2023

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Antibacterial Komagataeibacter hansenii nanocellulose membranes with avocado seed bioactive compounds

Kupnik,

Primožič,

Kokol

et al. 2024

Cellulose

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Biocompatible, mechanically stable, highly hydrophilic/swellable and safe antibacterial biomaterials are crucial for wound dressing and other applications in the health sector. Therefore, this study was conducted for the development of bacterial nanocellulose membranes, which were, for the first time, enriched with bacteriostatic and bactericidal effective avocado seed extracts prepared by different extraction techniques (ultrasonic, Soxhlet, high pressure with supercritical carbon dioxide). First, the production process of bacterial nanocellulose membranes from Komagataeibacter hansenii bacteria was optimized related to the fermentation media composition and culture conditions, resulting in bacterial nanocellulose membranes with up to 83% crystallinity and 54.5 g/L yield. The morphological structure of the membranes was varied further by using air- and freeze-drying processes. The Soxhlet and high pressure with supercritical carbon dioxide avocado seed extracts with the most charge negative surface (-33 mV) and smallest hydrodynamic size (0.1 µm) thus resulted in 100% reduction of both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus with up to log reduction of 2.56 and up to 100% bactericidal efficacy after 24 h of exposure, and at 14 mg/g of avocado seed extracts integrated in the bacterial nanocellulose membranes homogeneously. The high swelling (up to 600%) and water retention ability of avocado seed extracts enriched bacterial nanocellulose membranes, with a biocidal release up to 2.71 mg/mL, shows potential for antibacterial applications in the biomedicine, cosmetics, and pharmaceutical industries.

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Advances in the Production of Sustainable Bacterial Nanocellulose from Banana Leaves

Dáger-López,

Chenché,

Ricaurte-Párraga

et al. 2024

Polymers

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Interest in bacterial nanocellulose (BNC) has grown due to its purity, mechanical properties, and biological compatibility. To address the need for alternative carbon sources in the industrial production of BNC, this study focuses on banana leaves, discarded during harvesting, as a valuable source. Banana midrib juice, rich in nutrients and reducing sugars, is identified as a potential carbon source. An optimal culture medium was designed using a simplex-centroid mixing design and evaluated in a 10 L bioreactor. Techniques such as Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), and thermogravimetric analysis (TGA) were used to characterize the structural, thermal, and morphological properties of BNC. Banana midrib juice exhibited specific properties, such as pH (5.64), reducing sugars (15.97 g/L), Trolox (45.07 µM), °Brix (4.00), and antioxidant activity (71% DPPH). The model achieved a 99.97% R-adjusted yield of 6.82 g BNC/L. Physicochemical analyses revealed distinctive attributes associated with BNC. This approach optimizes BNC production and emphasizes the banana midrib as a circular solution for BNC production, promoting sustainability in banana farming and contributing to the sustainable development goals.

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Development of Bacterial Cellulose Membranes Incorporated with Plant Extracts

Cited by 3 publications

References 39 publications

Development and characterization of bacterial cellulose membrane incorporated with Witch hazel extract

Development and characterization of bacterial cellulose membrane incorporated with Witch hazel extract

Antibacterial Komagataeibacter hansenii nanocellulose membranes with avocado seed bioactive compounds

Advances in the Production of Sustainable Bacterial Nanocellulose from Banana Leaves

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