Sodium alginate/carboxymethyl cellulose films containing pyrogallic acid: physical and antibacterial properties

Han, Yingying; Wang, Limin

doi:10.1002/jsfa.7863

Cited by 103 publications

(42 citation statements)

References 30 publications

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“…On the other hand, none of the analyzed samples affected the growth of P. aeruginosa, reaching 3.7 ± 1.6 × 10 9 CFU mL −1 under each experimental condition (Figure 7). These results are in line with other studies aimed to unveil the antibacterial potential of CMC-based formulations, such as those containing reduced graphene oxide (rGO) [7] sodium alginate and chitosan [51], a zinc-based metal-organic framework and graphene oxide [52], or sodium alginate and pyrogallic acid [53], all of which in the form of either composite or bio-nanocomposite films. Here, a reasonable explanation for the lack of the antimicrobial activity of the composite films against the P. aeruginosa strain may rely on the higher resistance of Gram-negative bacteria as compared to Gram-positive ones, due to differences in the structure of the cell envelope.…”

Section: Antibacterial and Cytotoxic Activitysupporting

confidence: 89%

Graphene Oxide Carboxymethylcellulose Nanocomposite for Dressing Materials

et al. 2020

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Sore, infected wounds are a major clinical issue, and there is thus an urgent need for novel biomaterials as multifunctional constituents for dressings. A set of biocomposites was prepared by solvent casting using different concentrations of carboxymethylcellulose (CMC) and exfoliated graphene oxide (Exf-GO) as a filler. Exf-GO was first obtained by the strong oxidation and exfoliation of graphite. The structural, morphological and mechanical properties of the composites (CMCx/Exf-GO) were evaluated, and the obtained composites were homogenous, transparent and brownish in color. The results confirmed that Exf-GO may be homogeneously dispersed in CMC. It was found that the composite has an inhibitory activity against the Gram-positive Staphylococcus aureus, but not against Gram-negative Pseudomonas aeruginosa. At the same time, it does not exhibit any cytotoxic effect on normal fibroblasts.

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Section: Antibacterial and Cytotoxic Activitysupporting

confidence: 89%

Graphene Oxide Carboxymethylcellulose Nanocomposite for Dressing Materials

et al. 2020

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“…In one such study, pyrogallol was found to be second after curcumin among 48 polyphenols to inhibit both the planktonic and biofilm form of growth of periodontopathic bacteria [34]. In other study inclusion of pyrogallol in antibacterial films prepared from matrix of sodium alginate and carboxymethyl cellulose was found to be more effective against E. coli and S. aureus [29]. Furthermore, pyrogallol-rich polyphenols among about two dozens each of pure polyphenols and polyphenol-rich plant extracts showed a strong antibacterial activity against various bacterial strains tested [28].…”

Section: Discussionmentioning

confidence: 99%

“…Their presence in leaves of M. communis of Saudi origin might be due to varying environmental factors such as geography, temperature, day length, nutrients, rainfall, type of soil as well as genetic dynamics of the inhabitant plants. The new compounds identified in the leaves of M.communis in this study would be ideal to try for antibacterial activity, as there are reports wherein purified compounds with the skeleton backbone of naphthalenedione or pyrogallol have been shown to inhibit the growth of bacteria [27][28][29][30][31][32][33][34]. Several studies have documented antibacterial activity of the pyrogallol and naphthalenedione derivatives.…”

Section: Discussionmentioning

confidence: 99%

GC-MS analysis of Myrtus communis extract and its antibacterial activity against Gram-positive bacteria

Mir

Bashir

Alfaify

et al. 2020

BMC Complement Med Ther

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Background: Myrtus communis is a typical plant of Mediterranean area. The different parts of this plant such as berries, branches, and leaves have been used worldwide as a traditional/folk medicine for the treatment of various ailments and diseases. Methods: Ethanolic leaf extract of the plant was prepared by Soxhlet extraction method. Zone of inhibition, minimum inhibitory concentration and minimal bactericidal concentration were determined by well diffusion method and microplate alamar blue assay. GC-MS analysis was carried out to identify the compounds present in the extract. Microscopy and ImageJ software were used respectively for morphology and cell-length measurements. GraphPad Prism was used for statistical analysis. Results: The ethanolic extract showed strong inhibitory effect against Gram-positive and acid-fast bacteria with significant inhibition-zone size (9-25 mm), MIC (4.87-78 μg/ml), as well as MBC (0.3-20 mg/ml). However, no effect was observed on the growth of Gram-negative bacteria. The growth inhibition was found to be associated with the damage of cell wall as the extract-treated cells were sensitive to cell wall-targeting antibiotics and displayed the cell wall damage-depicting morphological defects. GC-MS analysis confirmed the presence of novel compounds in addition to the most representative compounds of the essential oils/extracts of M. communis of other country origins. Conclusion: These results demonstrate that M. communis leaf extract could be the source of compounds to be used for the treatment of Gram-positive bacterial infections. This is the first report, which provides insights into the mechanism of action of the extract in inhibiting the growth of Gram-positive bacteria.

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“…Rhim, Wu, Weller, and Schnepf [ 220 ] found that up to 10% PGA addition decreased the WVP of soy protein isolate films. Han and Wang [ 143 ] evaluated the WVP of sodium alginate-CMC films containing pyrogallic acid.…”

Section: Transport Mechanismsmentioning

confidence: 99%

Alginate-Based Edible Films and Coatings for Food Packaging Applications

Parreidt

Müller

Schmid

2018

Foods

419

151

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Alginate is a naturally occurring polysaccharide used in the bio industry. It is mainly derived from brown algae species. Alginate-based edible coatings and films attract interest for improving/maintaining quality and extending the shelf-life of fruit, vegetable, meat, poultry, seafood, and cheese by reducing dehydration (as sacrificial moisture agent), controlling respiration, enhancing product appearance, improving mechanical properties, etc. This paper reviews the most recent essential information about alginate-based edible coatings. The categorization of alginate-based coatings/film in food packaging concept is formed gradually with the explanation of the most important titles. Emphasis will be placed on active ingredients incorporated into alginate-based formulations, edible coating/film application methods, research and development studies of coated food products and mass transfer and barrier characteristics of the alginate-based coatings/films. Future trends are also reviewed to identify research gaps and recommend new research areas. The summarized information presented in this article will enable researchers to thoroughly understand the fundamentals of the coating process and to develop alginate-based edible films and coatings more readily.

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Sodium alginate/carboxymethyl cellulose films containing pyrogallic acid: physical and antibacterial properties

Abstract: Antibacterial SA/CMC films incorporating PA appear to have good potential to enhance the safety of foods and food products. © 2016 Society of Chemical Industry.

Cited by 103 publications

References 30 publications

Graphene Oxide Carboxymethylcellulose Nanocomposite for Dressing Materials

Graphene Oxide Carboxymethylcellulose Nanocomposite for Dressing Materials

GC-MS analysis of Myrtus communis extract and its antibacterial activity against Gram-positive bacteria

Alginate-Based Edible Films and Coatings for Food Packaging Applications

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