The effect of chitosan nanoparticles onto Lactobacillus cells

Ristić, Tijana; Lasič, Samo; Kosalec, Ivan; Bračič, Matej; Fras-Zemljič, Lidija

doi:10.1016/j.reactfunctpolym.2015.10.007

Cited by 27 publications

(20 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…TPP solution: as a crosslinking agent, sodium tripolyphosphate (TPP) was used. TPP powder was dissolved in MilliQ water, the concentration of the solution was 0.2% (w/v) in order to obtain 5:1 chitosan to TPP ratio (the optimal ratio according to a previously published paper [42]).…”

Section: Preparation Of Solutions/dispersionsmentioning

confidence: 99%

Physicochemical Characterization of Packaging Foils Coated by Chitosan and Polyphenols Colloidal Formulations

Zemljič

Plohl

Vesel

et al. 2020

IJMS

View full text Add to dashboard Cite

In this research, antimicrobial polysaccharide chitosan was used as a surface coating for packaging material. The aim of our research was to establish an additive formulation of chitosan and antioxidative plant extracts as dispersion of nanoparticles. Chitosan nanoparticles with embedded thyme, rosemary and cinnamon extracts were synthesized, and characterized for this purpose. Two representative, commercially used foils, polypropylene (PP) and polyethylene (PE), previously activated by UV/ozone to improve coating adhesion, were functionalized using chitosan-extracts nanoparticle dispersions. The foils were coated by two layers. A solution of macromolecular chitosan was applied onto foils as a first layer, followed by the deposition of various extracts embedded into chitosan nanoparticles that were attached as an upper layer. Since active packaging must assure bioactive efficiency at the interface with food, it is extremely important to understand the surface characteristics and phenomena of functionalized foils. The physico-chemical analyses of functionalized foils were thus comprised of surface elemental composition, surface charge, wettability, as well as surface morphology. It has been shown that coatings were applied successfully with an elemental composition, surface charge and morphology that should enable coating stability, homogeneity and consequently provide an active concept of the packaging surface in contact with food. Moreover, the wettability of foils was improved in order to minimize the anti-fogging behavior.

show abstract

Section: Preparation Of Solutions/dispersionsmentioning

confidence: 99%

Physicochemical Characterization of Packaging Foils Coated by Chitosan and Polyphenols Colloidal Formulations

Zemljič

Plohl

Vesel

et al. 2020

IJMS

View full text Add to dashboard Cite

show abstract

“…The high antimicrobial activity of chitosan was also observed by Han et al [68]. Moreover, Ristić et al [69] indicated that Lactobacillus inhibition of chitosan nanoparticles is reflected in low minimal inhibitory concentration. As reported by Madureira et al [70], chitosan nanoparticles could affect the cellular structure of bacteria and reinforce their antimicrobial activity.…”

Section: Antimicrobial Activity Of Chitosanmentioning

confidence: 71%

“…Lou et al [67] showed that the antibacterial activity of chitosan might be due to the membrane disruption and abnormal osmotic pressure from the assays of out membrane permeability and the observation of transmission electron microscopy (TEM). Moreover, Ristić et al [69] indicated that chitosan nanoparticles interact with the membrane of Lactobacillus cells, causing the perturbation of the membrane wall and leading to the death of the cells. As reported by Madureira et al [70], it was possible to obtain that the chitosan nanoparticles could affect the cellular structure of bacteria.…”

Section: Antimicrobial Activity Of Chitosan-based Coating With Antimimentioning

confidence: 99%

Chitosan-Based Coating with Antimicrobial Agents: Preparation, Property, Mechanism, and Application Effectiveness on Fruits and Vegetables

Xing

et al. 2016

International Journal of Polymer Science

116

View full text Add to dashboard Cite

Chitosan coating is beneficial to maintaining the storage quality and prolonging the shelf life of postharvest fruits and vegetables, which is always used as the carrier film for the antimicrobial agents. This review focuses on the preparation, property, mechanism, and application effectiveness on the fruits and vegetables of chitosan-based coating with antimicrobial agents. Chitosan, derived by deacetylation of chitin, is a modified and natural biopolymer as the coating material. In this article, the safety and biocompatible and antimicrobial properties of chitosan were introduced because these attributes are very important for its application. The methods to prepare the chitosan-based coating with antimicrobial agents, such as essential oils, acid, and nanoparticles, were developed by other researchers. Meanwhile, the application of chitosan-based coating is mainly due to its antimicrobial activity and other functional properties, which were investigated, introduced, and analyzed in this review. Furthermore, the surface and mechanical properties were also investigated by researchers and concluded in this article. Finally, the effects of chitosan-based coating on the storage quality, microbial safety, and shelf life of fruits and vegetables were introduced. Their results indicated that chitosan-based coating with different antimicrobial agents would probably have wide prospect in the preservation of fruits and vegetables in the future.

show abstract

“…It is well known that the protonated amino groups of chitosan play an important role in antibacterial activity [ 48 ] and better efficiency against Gram-positive bacteria was pointed out. Moreover, it was shown that catechins have high anti-bacterial activity against various microorganisms.…”

Section: Resultsmentioning

confidence: 99%

Two-Layer Functional Coatings of Chitosan Particles with Embedded Catechin and Pomegranate Extracts for Potential Active Packaging

et al. 2020

View full text Add to dashboard Cite

Two-layer functional coatings for polyethylene (PE) and polypropylene (PP) films were developed for the active packaging concept. Prior to coating, the polymer films were activated by O2 and NH3 plasma to increase their surface free energy and to improve the binding capacity and stability of the coatings. The first layer was prepared from a macromolecular chitosan solution, while the second (upper) layer contained chitosan particles with embedded catechin or pomegranate extract. Functionalized films were analyzed physico-chemically to elemental composition using ATR-FTIR spectroscopy and XPS. Further, oxygen permeability and wettability (Contact Angle) were examined. The antimicrobial properties were analyzed by the standard ISO 22196 method, while the antioxidative properties were determined with an ABTS assay. Functionalized films show excellent antioxidative and antimicrobial efficacy. A huge decrease in oxygen permeability was achieved in addition. Moreover, a desorption experiment was also performed, confirming that the migration profile of a compound from the surfaces was in accordance with the required overall migration limit. All these properties indicate the great potential of the developed active films/foils for end-uses in food packaging.

show abstract

The effect of chitosan nanoparticles onto Lactobacillus cells

Cited by 27 publications

References 46 publications

Physicochemical Characterization of Packaging Foils Coated by Chitosan and Polyphenols Colloidal Formulations

Physicochemical Characterization of Packaging Foils Coated by Chitosan and Polyphenols Colloidal Formulations

Chitosan-Based Coating with Antimicrobial Agents: Preparation, Property, Mechanism, and Application Effectiveness on Fruits and Vegetables

Two-Layer Functional Coatings of Chitosan Particles with Embedded Catechin and Pomegranate Extracts for Potential Active Packaging

Contact Info

Product

Resources

About