Controlled release of microencapsulated citronella essential oil on cotton and polyester matrices

Bezerra, Fabrício Maestá; Carmona, Óscar García; Carmona, Carlos; Arias, Manuel José Lis; Moraes, Flávio Faria de

doi:10.1007/s10570-016-0882-5

Cited by 75 publications

(36 citation statements)

References 50 publications

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“…However, CTO is volatile, poor water‐solubility, and chemically highly unstable in the undesirable environmental conditions in the presence of oxygen, light, and heat, which obviously lead to its limited efficacy and practical application fields. In this aspect, CTO can be trapped and controlled slowly and released from a microencapsulation matrix to make “active packaging,” one of the most hopeful innovations at this time. The application problem of CTO can be commendably solved by the microcapsule technology, which can greatly expand the development of the essential oil industry.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of sustained‐release and antibacterial citronella oil‐loaded composite microcapsules based on Pickering emulsion templates

Wang

Chen

et al. 2018

J of Applied Polymer Sci

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In this work, the citronella oil (CTO)‐loaded composite microcapsules with hydroxyapatite (HAp)/quaternary ammonium salt of chitosan (HACC)/sodium alginate (SA) shells are facilely and effectively fabricated by templating citronella oil‐in‐water Pickering emulsions, which are stabilized with HAp nanoparticles. The microcapsule composite shells are prepared by the electrostatic adsorption of HACC and SA, and then chelation interaction of alginate and Ca2+ ions released from HAp nanoparticles. Scanning electronic microscope observation shows that the microcapsules have a spherical shape. Thereafter, Fourier transform infrared spectroscopy and thermal gravimetric analysis results indicate that CTO is successfully loaded into the microcapsules, and the related CTO‐loaded microcapsules possess the thermal stability. Moreover, the in vitro release study of CTO shows that the microcapsules have sustained release activity, and the related CTO release profiles can be well described by Rigter–Peppas model. The antimicrobial assays of microcapsules display the antibacterial effect of CTO‐loaded microcapsules against Staphylococcus aureus and Escherichia coli. Overall, this study opens up new potentiality for unstable active ingredient as an environmental friendly and ingenious microencapsulation in food and agriculture applications. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46386.

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Section: Introductionmentioning

confidence: 99%

Fabrication of sustained‐release and antibacterial citronella oil‐loaded composite microcapsules based on Pickering emulsion templates

Wang

Chen

et al. 2018

J of Applied Polymer Sci

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“…Successful cases include fabrics coated with capsules of essential oils from peppermint ( Mentha haplocalyx Briq.) and citronella ( Cymbopogon nardus ) .…”

Section: Oils and Essential Oilsmentioning

confidence: 99%

Encapsulating plant ingredients for dermocosmetic application: an updated review of delivery systems and characterization techniques

Yang

Liu

Han

et al. 2020

Intern J of Cosmetic Sci

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Today, there is a rising demand and ongoing search for novel plant-derived phytochemicals in the cosmetic market owing to the growing consumer expectations worldwide for green and natural health products. Various plant ingredients, including polyphenols, oils, volatile oils, vitamins and other herbal extracts, have been extensively used in herbal cosmetics. Recent advances in encapsulation technologies have greatly improved their chemical stability, biocompatibility, skin permeability and dermocosmetic efficiency when applied topically. This comprehensive review summarizes the up-to-date information on encapsulated plant ingredients tailored for dermocosmetic application with a focus on the development of novel delivery systems. An overview of the commonly used techniques for carrier characterization, performance-related properties and toxicological evaluation is also included, which might provide guidance for researchers to select or develop appropriate assay systems. PolyphenolsPolyphenols are secondary metabolites in plants, and the presence of the array of phenolic hydroxyl groups makes them potent free radical scavengers and antioxidants, which are favoured in antiageing cosmetics [1]. Encapsulation techniques are primarily employed to stabilize the easily reducible polyphenolic compounds during storage and processing, thereby enabling their cosmetic/ pharmaceutical uses. A good example is quercetin, a flavonoid from Sophora japonica L. with a pronounced antioxidative and anti-inflammatory activity but with poor water solubility and low skin

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“…However, there seems to be no agreement about the best emulsifier for the citronella-gelatine-gum arabic coacervation system. Bezerra et al [59] produced gelatine-gum arabic citronella microcapsules with 1-18 µm in diameter by applying sodium lauryl sulphate (SLS) emulsifier and glutaraldehyde for wall crosslinking. In our batches, G-GA-7 and G-GA-9, microcapsules of similar sizes and elongated ellipsoidal shapes were obtained by using SDS as an emulsifier.…”

Section: Citronella Oil Microcapsules Produced With Complex Coacervationmentioning

confidence: 99%

Antimicrobial Paper Coatings Containing Microencapsulated Cymbopogon citratus Oil

Šumiga

Šumiga²,

Ravnjak³

et al. 2019

Coatings

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Essential oils are environmentally friendly candidates for antimicrobial smart packaging systems. Encapsulation is needed to reduce their volatility and achieve controlled release. Within this study, the essential oil of Cymbopogon citratus (citronella oil) was microencapsulated and applied in pressure-sensitive antimicrobial functional coatings on papers for secondary packaging. Two microencapsulation methods were used: complex coacervation of gelatine with carboxymethylcellulose or with gum arabic, and in situ polymerization of melamine-formaldehyde prepolymers with a polyacrylic acid modifier. Minimum inhibitory concentrations of citronella oil microcapsules were determined for Bacillus subtilis (B. subtilis), Escherichia coli (B. subtilis), Pseudomonas aeruginosa (P. aeruginosa) and Saccharomyces cerevisiae (S. cerevisiae). Microcapsule suspensions were coated on papers for flexible packaging, 2 and 30 g/m2, and mechanically activated in the weight pulling test. A novel method on agar plates in sealed Petri dishes was developed to evaluate the antimicrobial activity of released citronella vapours on E. coli and S. cerevisiae. The results showed that both microencapsulation methods were successful and resulted in a container type single-core microcapsules. In situ microcapsule suspensions had better paper coating properties and were selected for industrial settings. The antimicrobial activity of 2 g/m2 coatings was not detected; however, the antimicrobial activity of 30 g/m2 partially activated coated papers was confirmed. The product enabled a prolonged use with the gradual release of citronella oil at multiple exposures of functional papers to pressure, e.g., by a human hand during product handling.

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Controlled release of microencapsulated citronella essential oil on cotton and polyester matrices

Cited by 75 publications

References 50 publications

Fabrication of sustained‐release and antibacterial citronella oil‐loaded composite microcapsules based on Pickering emulsion templates

Fabrication of sustained‐release and antibacterial citronella oil‐loaded composite microcapsules based on Pickering emulsion templates

Encapsulating plant ingredients for dermocosmetic application: an updated review of delivery systems and characterization techniques

Antimicrobial Paper Coatings Containing Microencapsulated Cymbopogon citratus Oil

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