Fabrication of Environmentally Compatible Biopolymer Films of Pullulan/Piscean  Collagen/ZnO Nanocomposite and Their Antifungal Activity

Bailore, Niveditha Nagappa; Balladka, Sarojini Kunhanna; Doddapaneni, Suman Joshi D. S.; Mudiyaru, Murari Subrahmanaya

doi:10.1007/s10924-020-01953-y

Cited by 20 publications

(8 citation statements)

References 56 publications

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Section: Resultsmentioning

confidence: 99%

“…By observing the SEM of our films, we can also see the formation of nanoparticle agglomerates, this may also be one of the reasons why our films did not show good antifungal activity, since as explained by Bailore. 52 Physicochemical analysis of the fruit Weight loss. Figure 7(a) shows the changes in weight loss from the Isabella grape with the different treatments in ninth day storage time.…”

Section: Antimicrobial and Antifungal Propertiesmentioning

confidence: 99%

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Active chitosan- poly (vinyl alcohol) film reinforced with zinc oxide nanoparticles for food packaging applications

Coneo,

Ramos,

De Ávila

et al. 2023

Polymers from Renewable Resources

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Active packaging represents an innovative alternative to improve the quality of food and extend the shelf life of the product. The main aim of this research is to develop antibacterial films based on chitosan (Cs), polyvinyl alcohol (PVA), and zinc oxide nanoparticles (ZnONps) to find a solution of food deterioration due to the presence of pathogenic microorganisms. ZnONps were synthesized by green chemistry using the leaves extract of Petroselinum crispum. The films were fabricated with 0; 0.5; and 1% w/v of ZnONps using different proportions of Cs: PVA by the casting method. The mechanical, physicochemical, antimicrobial, and antifungal properties were assessed. Moreover, the influence of the Cs/PVA/ZnONps films in the conservation of the Isabella grape was analyzed (pH, titratable acidity, weight loss, total soluble solids, and decay rate) and it was compared to commercial coating and uncoated grapes. Results showed the increase in the content of PVA improved the mechanical properties and increased the water absorption. Besides, Young’s Module, and tensile strength of the films improved with ZnO nanoparticles addition. The antimicrobial activity of the nanocomposite films against Escherichia Coli was demonstrated. Finally, it was corroborated the nanocomposite films preserve the quality and extend the shelf life of Isabella grapes 6 days more than the commercial coating affirming their use in food packaging. To the best of our knowledge, no previous work related with the development of films based on Cs/PVA reinforced with ZnONPs has tested its application as fruits packaging, determining its effect on the ripening process through physic-chemical assays.

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Section: Resultsmentioning

confidence: 99%

Section: Antimicrobial and Antifungal Propertiesmentioning

confidence: 99%

Active chitosan- poly (vinyl alcohol) film reinforced with zinc oxide nanoparticles for food packaging applications

Coneo,

Ramos,

De Ávila

et al. 2023

Polymers from Renewable Resources

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“…One possible explanation for this observation could be the formation of nanoclusters of a larger size within the polymer matrix. It has been suggested that ZnO-NPs may impact fungal cell functions by increasing the nucleic acid content, which could be a result of the stress induced by the presence of nanoparticles within the fungal cells [ 125 ].…”

Section: Novel Packaging Materials Used For Food Pathogens Inhibitionmentioning

confidence: 99%

“…The pullulan/collagen/ZnO-NPs (0.5%) composite films obtained by Bailore et al, (2020) [ 125 ] demonstrated effective activity against A. niger , with a maximum zone of inhibition measuring 18 mm. These films also exhibited inhibitory effects on the Gram-positive bacterium B. subtilis , showing a zone of inhibition of 10 mm.…”

Section: Novel Packaging Materials Used For Food Pathogens Inhibitionmentioning

confidence: 99%

Trends in Food Pathogens Risk Attenuation

Popa

Ungureanu²,

Geicu-Cristea

et al. 2023

Microorganisms

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Foodborne pathogens represent one of the most dangerous threats to public health along the food chain all over the world. Over time, many methods were studied for pathogen inhibition in food, such as the development of novel packaging materials with enhanced properties for microorganisms’ growth inhibition (coatings, films) and the use of emerging technologies, like ultrasound, radio frequency or microwave. The aim of this study was to evaluate the current trends in the food industry for pathogenic microorganisms’ inhibition and food preservation in two directions, namely technology used for food processing and novel packaging materials development. Five technologies were discussed in this study, namely high-voltage atmospheric cold plasma (HVACP), High-Pressure Processing (HPP), microwaves, radio frequency (RF) heating and ultrasound. These technologies proved to be efficient in the reduction of pathogenic microbial loads in different food products. Further, a series of studies were performed, related to novel packaging material development, by using a series of antimicrobial agents such as natural extracts, bacteriocins or antimicrobial nanoparticles. These materials proved to be efficient in the inhibition of a wide range of microorganisms, including Gram-negative and Gram-positive bacteria, fungi and yeasts.

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“…α-(1 → 6)-linked with (1 → 4)-α- d -triglucosides 19 . This unique linkage pattern leads to high adhesion and tensile strength of pullulan 20 . Unlike many other polysaccharides, pullulan dissolves easily in water due to the low degree of hydrogen bonding.…”

Section: Introductionmentioning

confidence: 99%

Delivery of streptomycin to the rat colon by use of electrospun nanofibers

Guerra

Ajalloueian

Shi

et al. 2022

Sci Rep

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Drug-loaded electrospun nanofibers are potential drug carrier systems that may optimize disease treatment while reducing the impact on commensal microbes. The feasibility of streptomycin-loaded pullulan nanofibers fabricated from a green electrospinning procedure using water as the solvent was assessed. We conducted a rat study including a group treated with streptomycin-loaded nanofibers (STR-F, n = 5), a group treated with similar concentrations of streptomycin in the drinking water (STR-W, n = 5), and a non-treated control group (CTR, n = 5). Streptomycin was successfully loaded into nanofibers and delivered by this vehicle, which minimized the quantity of the drug released in the ileal compartment of the gut. Ingested streptomycin-resistant E. coli colonized of up to 106 CFU/g feces, revealing a selective effect of streptomycin even when given in the low amounts allowed by the nanofiber-based delivery. 16S amplicon sequencing of the indigenous microbiota revealed differential effects in the three groups. An increase of Peptostreptococcaceae in the cecum of STR-F animals may indicate that the fermentation of nanofibers directly or indirectly promoted growth of bacteria within this family. Our results elucidate relevant properties of electrospun nanofibers as a novel vehicle for delivery of antimicrobials to the large intestine.

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Fabrication of Environmentally Compatible Biopolymer Films of Pullulan/Piscean Collagen/ZnO Nanocomposite and Their Antifungal Activity

Cited by 20 publications

References 56 publications

Active chitosan- poly (vinyl alcohol) film reinforced with zinc oxide nanoparticles for food packaging applications

Active chitosan- poly (vinyl alcohol) film reinforced with zinc oxide nanoparticles for food packaging applications

Trends in Food Pathogens Risk Attenuation

Delivery of streptomycin to the rat colon by use of electrospun nanofibers

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