Optical properties, singlet oxygen, and free radical production ability with different UV irradiations and antimicrobial inhibitors against various bacterial species of ZnO: Eu nanoparticles

Karimi, Merat; Sadeghi, Ehsan; Bigdeli, Shoaleh; Zahedifar, M.

doi:10.1016/j.radphyschem.2023.111132

Cited by 3 publications

(3 citation statements)

References 40 publications

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“…In the type II pathway scenario, it transfers energy to produce the highly reactive singlet oxygen ( 1 O 2 ) and the triplet ground-state molecular oxygen ( 3 O 2 ) [12]. A ground-state PS is propelled into a high-energy electronic state by the absorption of light (photon) [13,14]. According to Lucky et al following intersystem crossing, the PS's excited singlet state can produce a persistently excited triplet state [15].…”

Section: Photodynamic Therapy (Pdt)mentioning

confidence: 99%

Recent developments in photodynamic therapy and its application against multidrug resistant cancers

Bhattacharya,

Mukhopadhyay,

Shivam

et al. 2023

Biomed. Mater.

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Recently, photodynamic therapy (PDT) has received a lot of attention for its potential use in cancer treatment. It enables the therapy of a multifocal disease with the least amount of tissue damage. The most widely used prodrug is 5-aminolevulinic acid (5-ALA), which undergoes heme pathway conversion to protoporphyrin IX, which acts as a photosensitizer (PS). Additionally, hematoporphyrin, bacteriochlorin, and phthalocyanine are also studied for their therapeutic potential in cancer. Unfortunately, not every patient who receives PDT experiences a full recovery. Resistance to different anticancer treatments is commonly observed. A few of the resistance mechanisms by which cancer cells escape therapeutics are genetic factors, drug-drug interactions, impaired DNA repair pathways, mutations related to inhibition of apoptosis, epigenetic pathways, etc. Recently, much research has been conducted to develop a new generation of PS based on nanomaterials that could be used to overcome cancer cells' multidrug resistance. Various metal-based, polymeric, lipidic nanoparticles, dendrimers, etc., have been utilized in the PDT application against cancer. This article discusses the detailed mechanism by which cancer cells evolve towards multidrug resistance as well as recent advances in PDT-based nanoparticles for use against multidrug-resistant cancers. 

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Section: Photodynamic Therapy (Pdt)mentioning

confidence: 99%

Recent developments in photodynamic therapy and its application against multidrug resistant cancers

Bhattacharya,

Mukhopadhyay,

Shivam

et al. 2023

Biomed. Mater.

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“…They offer very good stability, as well as semi-conducting behavior, high transparency and high UV absorption capabilities (shielding properties). This is why they are widely used as antimicrobial compounds for active coatings/packaging applications [11,[19][20][21][22][23][24][25]. The authors' [10] findings led to the theory that the introduction of the ZnO nanoparticles (separately) into the F. betulina or into the Verbasculum L. or the U. tomentosa extracts may cause a synergistic effect between two active agents.…”

Section: Introductionmentioning

confidence: 99%

“…As an assumption [9,10,26], it might be predicted that the introduction of ZnO nanoparticles into the F. betulina, Verbascum L. or U. tomentosa extracts (separately) might lead to antifungal and antiviral activity of the layers on the packaging material surfaces. The coatings containing zinc oxide nanoparticles as an additive will be UV resistant due to their UV-shielding properties, and they will maintain the plant extracts' active compound effectiveness [12,[16][17][18][19][20]. As a conclusion [4][5][6], to analyze the antifungal properties of the coatings' selected strains, Candida albicans PCM 2566 and Fusarium oxysporum CCM F-545 were used.…”

Section: Introductionmentioning

confidence: 99%

The Antifungal and Antiviral Activity of Coatings Containing Zinc Oxide Nanoparticles and Verbascum L. or Formitopsis betulina Extracts and Their Influence on the Quality of Strawberries after Storage

Mizielińska,

Ordon,

Burdajewicz

et al. 2024

Coatings

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The goal of this study was to analyze the antifungal and antiviral activity of coatings based on Formitopsis betulina, Verbascum L. and Uncaria tomentosa extracts with ZnO nanoparticles as active compounds. The other purpose was to investigate the impact of polypropylene bags coated with the obtained antiviral/antifungal coatings on the microbial quality/purity of strawberries. The results of this study showed that the analyzed coatings inhibited Candida albicans growth completely. They did not inhibit the growth of Fusarium oxysporum, but they decreased its number. Additionally, all layers demonstrated a high activity against the Φ 6 bacteriophage particles. Analyzing the microbial purity of the strawberries after storage, it was noticed that the modified bags with Verbascum L. (ZnVL) and F. betulina (ZnFb) extracts and the addition of the nano ZnO had a significant effect on the decrease of the total count and on the number of yeast and mold. After 144 h of storage of the strawberries, the ZnVL coating was found to be more effective than the ZnFb layer. However, after 216 h of storage, ZnVL was more active against yeast and mold, but the packaging covered with the ZnFb coating was more effective against bacteria.

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The Antibacterial Effect of the Films Coated with the Layers Based on Uncaria tomentosa and Formitopsis betulina Extracts and ZnO Nanoparticles and Their Influence on the Secondary Shelf-Life of Sliced Cooked Ham

Ordon,

Burdajewicz,

Sternal

et al. 2023

Applied Sciences

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Microbial surface contamination of the cooked ham sliced by shop assistants has an influence on its potential secondary shelf-life. Active packaging may be the solution. The first goal of the work was to obtain coatings based on Formitopsis betulina and Uncaria tomentosa extracts (separately), with the addition of nanoparticles of ZnO (as a synergetic agent to increase plant extracts’ antimicrobial effectiveness), that could be active against selected bacterial strains. Another aim of the work was to determine the influence of obtained active layers on microbial purity and texture of the samples. The results of the study demonstrated that the layers containing F. betulina or U. tomentosa extracts with the addition of ZnO nanoparticles inhibited Staphylococcus aureus, Bacillus atrophaeus, and Escherichia coli growth completely and decreased the number of Pseudomonas syringae cells. Analyzing microbial purity of sliced cooked ham portions after storage, it was observed that the active packaging based on U. tomentosa extracts had a greater influence on the total count than the coatings containing F. betulina extracts and that both active packaging materials affected the microbial purity of the cooked ham. Analyzing the textural parameter changes after 48 h of storage, a decrease in the gumminess, chewiness and cohesiveness values was noted, but only for the ham portions stored in bags covered with the coating based on U. tomentosa. The effectiveness of the active packaging on textural parameters after 96 h of storage was not noticed.

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Optical properties, singlet oxygen, and free radical production ability with different UV irradiations and antimicrobial inhibitors against various bacterial species of ZnO: Eu nanoparticles

Cited by 3 publications

References 40 publications

Recent developments in photodynamic therapy and its application against multidrug resistant cancers

Recent developments in photodynamic therapy and its application against multidrug resistant cancers

The Antifungal and Antiviral Activity of Coatings Containing Zinc Oxide Nanoparticles and Verbascum L. or Formitopsis betulina Extracts and Their Influence on the Quality of Strawberries after Storage

The Antibacterial Effect of the Films Coated with the Layers Based on Uncaria tomentosa and Formitopsis betulina Extracts and ZnO Nanoparticles and Their Influence on the Secondary Shelf-Life of Sliced Cooked Ham

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