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Article

Characterization of Bioactive Colored Materials Produced from Bacterial Cellulose and Bacterial Pigments

1
FibEnTech Research Unit, Faculty of Engineering, University of Beira Interior, 6200-001 Covilhã, Portugal
2
Centre for Textile Science and Technology (2C2T), University of Minho, 4800-058 Guimarães, Portugal
*
Author to whom correspondence should be addressed.
Academic Editor: Barbara Rothen-Rutishauser
Materials 2022, 15(6), 2069; https://doi.org/10.3390/ma15062069
Received: 23 February 2022 / Revised: 7 March 2022 / Accepted: 9 March 2022 / Published: 11 March 2022
(This article belongs to the Special Issue Advances in Bio-Inspired Materials for Medical Applications)
A Bacterial Cellulose (BC) film was developed and characterized as a potential functional bioactive material. BC films, obtained from a microbial consortium of bacteria and yeast species, were functionalized with the bacterial pigment prodigiosin, produced by Serratia plymuthica, and flexirubin-type pigment, from Chryseobacterium shigense, which exhibit a wide range of biological properties. BC was successfully functionalized at 15% over the weight of the fiber at 40 °C during 60 min, and a color strength of 1.00 ± 0.01 was obtained for BC_prodigiosin and 0.38 ± 0.02 for BC_flexirubin-type pigment. Moreover, the BC films showed moderate hydrophilic character following alkaline treatment, which was maintained after both pigments were incorporated. The porosity and mechanical performance of the functionalized BC samples also remained unaffected. Furthermore, the BC samples functionalized with prodigiosin presented antibacterial activity and were able to inhibit the growth of pathogenic bacteria Staphylococcus aureus and Pseudomonas aeruginosa, with inhibition rates of 97.89 ± 0.60% and 85.12 ± 0.17%, respectively, while BC samples functionalized with flexirubin-type pigment exhibited the highest antioxidant activity, at 38.96 ± 0.49%. This research provides an eco-friendly approach to grant BC film-based material with color and advantageous bioactive properties, which can find application in several fields, especially for medical purposes. View Full-Text
Keywords: bacterial cellulose; bacterial pigments; antimicrobial; antioxidant; prodigiosin; flexirubin bacterial cellulose; bacterial pigments; antimicrobial; antioxidant; prodigiosin; flexirubin
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MDPI and ACS Style

Amorim, L.F.A.; Fangueiro, R.; Gouveia, I.C. Characterization of Bioactive Colored Materials Produced from Bacterial Cellulose and Bacterial Pigments. Materials 2022, 15, 2069. https://doi.org/10.3390/ma15062069

AMA Style

Amorim LFA, Fangueiro R, Gouveia IC. Characterization of Bioactive Colored Materials Produced from Bacterial Cellulose and Bacterial Pigments. Materials. 2022; 15(6):2069. https://doi.org/10.3390/ma15062069

Chicago/Turabian Style

Amorim, Lúcia F. A., Raul Fangueiro, and Isabel C. Gouveia. 2022. "Characterization of Bioactive Colored Materials Produced from Bacterial Cellulose and Bacterial Pigments" Materials 15, no. 6: 2069. https://doi.org/10.3390/ma15062069

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