Chitosan-based film incorporated with essential oil nanoemulsion foreseeing enhanced antimicrobial effect

Elshamy, Samar; Kubra, Khadizatul; Uemura, Kunihiko; Nakajima, Mitsutoshi; Neves, Marcos A.

doi:10.1007/s13197-020-04888-3

Cited by 39 publications

(28 citation statements)

References 45 publications

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“…According to the AI, CS-REO showed an additive effect from CS and REO alone, as also indicated by Peralta-Ruiz et al (2020a) . Our findings agree with several previous studies that have reported on synergistic or additive effects of CS and EOs in combination for fruit preservation ( Yuan et al, 2016 ; Lima Oliveira et al, 2018 ; de Oliveira et al, 2020 ; Elshamy et al, 2021 ).…”

Section: Discussionsupporting

confidence: 93%

Chitosan Coating Enriched With Ruta graveolens L. Essential Oil Reduces Postharvest Anthracnose of Papaya (Carica papaya L.) and Modulates Defense-Related Gene Expression

et al. 2021

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Anthracnose of papaya (Carica papaya L.) caused by the fungus Colletotrichum spp. is one of the most economically important postharvest diseases. Coating with chitosan (CS) and Ruta graveolens essential oil (REO) might represent a novel eco-friendly method to prevent postharvest anthracnose infection. These compounds show both antimicrobial and eliciting activities, although the molecular mechanisms in papaya have not been investigated to date. In this study, the effectiveness of CS and REO alone and combined (CS-REO) on postharvest anthracnose of papaya fruit during storage were investigated, along with the expression of selected genes involved in plant defense mechanisms. Anthracnose incidence was reduced with CS, REO, and CS-REO emulsions after 9 days storage at 25°C, by 8, 21, and 37%, respectively, with disease severity reduced by 22, 29, and 44%, respectively. Thus, McKinney’s decay index was reduced by 22, 30, and 44%, respectively. A protocol based on reverse transcription quantitative real-time PCR (RT-qPCR) was validated for 17 papaya target genes linked to signaling pathways that regulate plant defense, pathogenesis-related protein, cell wall-degrading enzymes, oxidative stress, abiotic stress, and the phenylpropanoid pathway. CS induced gene upregulation mainly at 6 h posttreatment (hpt) and 48 hpt, while REO induced the highest upregulation at 0.5 hpt, which then decreased over time. Furthermore, CS-REO treatment delayed gene upregulation by REO alone, from 0.5 to 6 hpt, and kept that longer over time. This study suggests that CS stabilizes the volatile and/or hydrophobic substances of highly reactive essential oils. The additive effects of CS and REO were able to reduce postharvest decay and affect gene expression in papaya fruit.

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Section: Discussionsupporting

confidence: 93%

Chitosan Coating Enriched With Ruta graveolens L. Essential Oil Reduces Postharvest Anthracnose of Papaya (Carica papaya L.) and Modulates Defense-Related Gene Expression

et al. 2021

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“…Thus, the probable appearance of CH–NE could be a yellowish red, whereas CH, CH–CNE and CH–CO were yellowish‐green, following the aforementioned trend. The colour properties might be affected by the methods employed to produce the composite film containing CurNEs and/or CO. Further, the low transparency of CH–NE could account for additional benefits, such as barrier properties, antioxidant properties and abundance of the active compounds (Bonilla et al ., 2013; Elshamy et al ., 2021).…”

Section: Resultsmentioning

confidence: 99%

Effects of a curcumin nanoemulsion on the physico‐chemical properties of chitosan‐based films

Luangapai

Peanparkdee

Iwamoto

2021

Int J of Food Sci Tech

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Chitosan (CH)-based films were incorporated with a curcumin nanoemulsion (CurNE) to overcome their limitations, such as low mechanical strength and high-water vapour permeability (WVP). The obtained optimum conditions of NE were, as follows: oil to aqueous phase ratio = 1:9 and ultrasonication time = 15 min, given that the smallest mean diameter and the highest absolute value of the zeta potential were 307.53 AE 6.30 nm and −15.43 AE 0.74 mV. Thereafter, NE was encapsulated in CH(CH-NE) to determine the functional amelioration, as well as the alteration in the inner structure. CH-NE demonstrated the successful fabrication of uniform and compatible films, which reinforced elongation and significantly decreased the WVP. Furthermore, the antioxidant activity of CH-NE was five times higher than that of CH. The thermal and electrical properties were evaluated to elucidate the alterations in the inner structure alterations. Further, the glass-transition temperature (T g ) of CH-NE shifted by ~10 °C and the relaxation time (τ) of the electric modulus increased compared with that of CH, indicating that the incorporation of NE affected the structural alterations.

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“…In another study, Beikzadeh and Akbarinejad [111] reported that lemon myrtle essential oil-loaded cellulose acetate nanofibers increased the antibacterial properties of biopolymer films against B. cereus and E. coli. The incorporation of thyme oil nanoemulsions into chitosan films enhanced their antimicrobial activity against E. coli and Bacillus subtilis [112]. Lee and Garcia [70] reported that the introduction of oregano oil nanoemulsions into hydroxypropyl methylcellulose (HPMC) films improved their antimicrobial activity against S. aureus, B. cereus, L. monocytogenes, E. coli, S. typhimurium, P. aeruginosa, and V. parahaemolyticus.…”

Section: Antimicrobial Propertiesmentioning

confidence: 99%

Application of Nanotechnology to Improve the Performance of Biodegradable Biopolymer-Based Packaging Materials

et al. 2021

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There is great interest in developing biodegradable biopolymer-based packaging materials whose functional performance is enhanced by incorporating active compounds into them, such as light blockers, plasticizers, crosslinkers, diffusion blockers, antimicrobials, antioxidants, and sensors. However, many of these compounds are volatile, chemically unstable, water-insoluble, matrix incompatible, or have adverse effects on film properties, which makes them difficult to directly incorporate into the packaging materials. These challenges can often be overcome by encapsulating the active compounds within food-grade nanoparticles, which are then introduced into the packaging materials. The presence of these nanoencapsulated active compounds in biopolymer-based coatings or films can greatly improve their functional performance. For example, anthocyanins can be used as light-blockers to retard oxidation reactions, or they can be used as pH/gas/temperature sensors to produce smart indicators to monitor the freshness of packaged foods. Encapsulated botanical extracts (like essential oils) can be used to increase the shelf life of foods due to their antimicrobial and antioxidant activities. The resistance of packaging materials to external factors can be improved by incorporating plasticizers (glycerol, sorbitol), crosslinkers (glutaraldehyde, tannic acid), and fillers (nanoparticles or nanofibers). Nanoenabled delivery systems can also be designed to control the release of active ingredients (such as antimicrobials or antioxidants) into the packaged food over time, which may extend their efficacy. This article reviews the different kinds of nanocarriers available for loading active compounds into these types of packaging materials and then discusses their impact on the optical, mechanical, thermal, barrier, antioxidant, and antimicrobial properties of the packaging materials. Furthermore, it highlights the different kinds of bioactive compounds that can be incorporated into biopolymer-based packaging.

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Chitosan-based film incorporated with essential oil nanoemulsion foreseeing enhanced antimicrobial effect

Cited by 39 publications

References 45 publications

Chitosan Coating Enriched With Ruta graveolens L. Essential Oil Reduces Postharvest Anthracnose of Papaya (Carica papaya L.) and Modulates Defense-Related Gene Expression

Chitosan Coating Enriched With Ruta graveolens L. Essential Oil Reduces Postharvest Anthracnose of Papaya (Carica papaya L.) and Modulates Defense-Related Gene Expression

Effects of a curcumin nanoemulsion on the physico‐chemical properties of chitosan‐based films

Application of Nanotechnology to Improve the Performance of Biodegradable Biopolymer-Based Packaging Materials

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