Microencapsulação de óleo essencial de laranja: seleção de material de parede

Ascheri, Diego P. R.; Marquez, Márcia O. M.; Martucci, Enny Therezinha

doi:10.1590/s0101-20612003000400002

Cited by 29 publications

(21 citation statements)

References 5 publications

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“…The resulting capsules were filtered off, washed and allowed to dry. Chemical structure of the obtained capsules, ATR‐FTIR and morphological features were enlightened by SEM …”

Section: Methodsmentioning

confidence: 99%

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pH‐controlled lavender oil capsulation with ABA‐type block copolymer and usage in paper coating

Kandırmaz

Bi̇rtane

Çi̇ği̇l

et al. 2019

Flavour & Fragrance J

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The aim of this study is to produce a lavender oil capsules with triblock copolymer and to use these capsules for providing scented paper. Thus, polyethylene oxide‐polypropylene glycol‐polyethylene oxide (PEO‐b‐PPG‐b‐PEO) ABA‐type block copolymer was synthesized by means of Atom Transfer Radical Polymerization and the chemical structure of PEO‐b‐PPG‐b‐PEO was characterized by ATR‐FTIR and 1H‐NMR. Moreover, block ratio of the PEO‐b‐PPG‐b‐PEO was identified with 1H‐NMR. Lavender oil was encapsulated in the polymer by micellization of interactions between hydrophilic‐lipophilic‐hydrophilic polymer and oil. These interactions include lavender oil and lipophilic block interaction and oil‐hydrophilic group repulsion. In addition, hydrophilic groups interacted with water to keep the micelles suspended. The critical micelle concentration and size of the micelles were analysed with SEM. Decomposition of capsules was determined by UV spectroscopy with respect to pH change. Paper coating formulations were prepared with fragrant capsules and coated on paper with laboratory‐type coating machine. The colour and gloss of obtained papers were determined by spectrophotometer and glossmeter. As a result, PEO‐b‐PPG‐b‐PEO polymer can be used to encapsulate lavender oil, and the resulting capsules have functioned without degradation in the paper coating.

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“…The resulting capsules were filtered off, washed and allowed to dry. Chemical structure of the obtained capsules, ATR‐FTIR and morphological features were enlightened by SEM …”

Section: Methodsmentioning

confidence: 99%

“…Lavender oil is an odour used in cosmetic, pharmacy, anti‐microbiology and aromatherapy . Lavender oil is frequently used in perfume and chemical industry.…”

Section: Introductionmentioning

confidence: 99%

pH‐controlled lavender oil capsulation with ABA‐type block copolymer and usage in paper coating

Kandırmaz

Bi̇rtane

Çi̇ği̇l

et al. 2019

Flavour & Fragrance J

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show abstract

“…Several methods have been purposed for microcapsule's production [13][14][15][16][17][18][19][20][21][22], in order to be adapted to different types of core and shell materials, as well as, to generate particles with various sizes, shell thickness and permeability, thus adjusting the release rate of the active principle. Generally these techniques can be divided into two major categories, namely chemical and physical methods; the latter one can be subdivided into physicochemical and physicomechanical techniques [6].…”

Section: Microencapsulation Methodsmentioning

confidence: 99%

Microencapsulation of essential oils with biodegradable polymeric carriers for cosmetic applications

Martins

Barreiro

Coelho

et al. 2014

Chemical Engineering Journal

287

167

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Microencapsulation provides an important tool for cosmetic and/or pharmaceutical industry, enabling protection and controlled release of several active agents. The encapsulation of essential oils in core-shell or matrix particles has been investigated for various reasons, e.g., protection from oxidative decomposition and evaporation, odor masking or merely to act as support to ensure controlled release. A large number of microencapsulation methods have been developed in order to be adapted to different types of active agents and shell materials, generating particles with a variable range of sizes, shell thicknesses and permeability, providing a tool to modulate the release rate of the active principle. With this work, an overview regarding properties and applications of essential oils and biodegradable polymers in the cosmetic field, focusing the use of polylactide as the base material to encapsulate thyme oil, as well as of microencapsulation processes with a particular emphasis on the coacervation, will be presented.2

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“…A wide range of core materials have been encapsulated, including adhesives, agrochemicals, live cells, active enzymes, flavours, fragrances and pharmaceuticals (Gosh, 2006). Microencapsulation techniques can be as diverse as coacervation (Jégat, 2000;Soper et al, 2000), atomization (Ascheri et al, 2003), interfacial polymerisation (Mizuno et al, 2005;Hirech et al, 2003) and "in situ" polymerisation (Bang et al, 2005). The choice of the appropriate technique depends on the core material properties, the involved manufacturing conditions and the product end user requirements.…”

mentioning

confidence: 99%