Antimicrobial activity of lactoferrin-chitosan-gellan nanoparticles and their influence on strawberry preservation

Duarte, Larissa G.R.; Picone, Carolina Siqueira Franco

doi:10.1016/j.foodres.2022.111586

Cited by 41 publications

(11 citation statements)

References 91 publications

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“…In particular, the indirect activity of citronellal brings more possibilities to its application. It could also be combined with related technologies to improve the biological activity of plant extracts [53][54][55] to improve its stability and achieve a slow release of the drug. Although this study reveals the antifungal mechanism of citronellal against M. oryzae and preliminarily elucidated its control effect on rice blast, its molecular regulation mechanism and field application technology still require further study.…”

Section: Discussionmentioning

confidence: 99%

Natural Product Citronellal can Significantly Disturb Chitin Synthesis and Cell Wall Integrity in Magnaporthe oryzae

Zhou

et al. 2022

JoF

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Background: Natural products are often favored in the study of crop pests and diseases. Previous studies have shown that citronellal has a strong inhibition effect on Magnaporthe oryzae. The objective of this study was to clarify its mechanism of action against M. oryzae. Results: Firstly, the biological activity of citronellal against M. oryzae was determined by direct and indirect methods, and the results show that citronellal had a strong inhibition effect on M. oryzae with EC50 values of 134.00 mg/L and 70.48 μL/L air, respectively. Additionally, a preliminary study on its mechanism of action was studied. After citronellal treatment, electron microscopy revealed that the mycelium became thin and broken; scanning electron microscopy revealed that the mycelium was wrinkled and distorted; and transmission electron microscopy revealed that the mycelium cell wall was invaginated, the mass wall of mycelium was separated, and the organelles were blurred. The mycelium was further stained with CFW, and the nodes were blurred, while the mycelium was almost non-fluorescent after PI staining, and there was no significant difference in the relative conductivity of mycelium. In addition, chitinase was significantly enhanced, and the expression of chitin synthesis-related genes was 17.47-fold upregulated. Finally, we found that the efficacy of citronellal against the rice blast was as high as 82.14% according to indoor efficacy tests. Conclusion: These results indicate that citronellal can affect the synthesis of chitin in M. oryzae and damage its cell wall, thereby inhibiting the growth of mycelium and effectively protecting rice from rice blasts.

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Section: Discussionmentioning

confidence: 99%

Natural Product Citronellal can Significantly Disturb Chitin Synthesis and Cell Wall Integrity in Magnaporthe oryzae

Zhou

et al. 2022

JoF

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“…CS amino groups are protonated in acidic conditions its and thus this polysaccharide becomes positively charged (Weißpflog et al ., 2021). The positive charges of CS interact with the negative charges of the bacterial membrane causing cell lysis and leakage of intracellular substances (Duarte & Picone, 2022).…”

Section: Resultsmentioning

confidence: 99%

Improving chitosan properties through ionic and chemical cross‐linking and their impact on emulsified systems

Gonçalves

Duarte

Fiocco

et al. 2023

Int J of Food Sci Tech

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Chitosan (CS) nanoparticles were formed by two different methodologies: ionic (with sodium tripolyphosphate -TPP) and chemical (with genipin -GN) cross-linking. CS-TPP and CS-GN nanoparticles showed positive zeta potential (+46.24 and +62.86 mV, respectively) and sizes ranging from 83.70 to 835.91 nm, respectively. Ionic cross-linking (with TPP) resulted in particles smaller than those formed by chemical cross-linking (with GN). The in vitro antibacterial activity revealed an efficient inhibitory effect, especially regarding CS-TPP. In situ, antibacterial and antioxidant studies were carried out on O/W emulsions. The mesophilic and psychrotrophic counts, peroxide value and quantification of conjugated dienes and trienes during time revealed that nanoparticles tend to improve the microbiological and oxidative stability of emulsions. These findings underline the direct relationship between the reduction of particle size and the increase in biopolymer functional properties and expand the possibilities of CS application as a natural preservative of emulsified systems.

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“…The pH, total soluble solids (TSS), and titratable acidity (TA) were analyzed according to the methodology of Duarte & Picone. 10 The fruit pulp was composed of 10 fruits in triplicate. Firmness was assessed using a TA.XT plus Digital Texture Analyzer (Stable Micro Systems Ltd., Godalming, UK) with a 6 mm diameter probe, 120 mm min −1 speed, 2 mm penetration distance and a 2 mm area of contact of 12 mm 2 in the peeled fruit.…”

Section: Physicochemical Parameters Of Lycheesmentioning

confidence: 99%

“…Also, when antimicrobial compounds are added, they reduce the growth of pathogens on the food surface. 10…”

Section: Introductionmentioning

confidence: 99%

Effect of carnauba wax nanoemulsion associated with Syzygium aromaticum and Mentha piperita essential oils as an alternative to extend lychee post-harvest shelf life

Fukuyama,

Duarte,

Pedrino

et al. 2024

Sustainable Food Technol.

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Antimicrobial activity of lactoferrin-chitosan-gellan nanoparticles and their influence on strawberry preservation

Cited by 41 publications

References 91 publications

Natural Product Citronellal can Significantly Disturb Chitin Synthesis and Cell Wall Integrity in Magnaporthe oryzae

Natural Product Citronellal can Significantly Disturb Chitin Synthesis and Cell Wall Integrity in Magnaporthe oryzae

Improving chitosan properties through ionic and chemical cross‐linking and their impact on emulsified systems

Effect of carnauba wax nanoemulsion associated with Syzygium aromaticum and Mentha piperita essential oils as an alternative to extend lychee post-harvest shelf life

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