Microencapsulation of Rosemary Essential Oil by Co-Extrusion/Gelling Using Alginate as a Wall Material

Dolçà, Celia; Ferrándiz, Marcela; Capablanca, Lucía; Franco, Esther; Elena, María; López, Fernanda; García, David

doi:10.4236/jeas.2015.53010

Cited by 29 publications

(16 citation statements)

References 15 publications

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“…In the past we tried with Coulter® Counter and we concluded that it is not a good way to determine the size of the alginate microcapsules due to the use of isotonic solution [27].…”

Section: Morphologymentioning

confidence: 99%

“…Besides, chitosan has the ability to form hydrogels, dimensional polymeric networks with high water absorption capacity [27], which is very interesting from agricultural point of view.…”

Section: Introductionmentioning

confidence: 99%

“…This process happens when a fluid flows in laminar state and breaks into droplets of a same size through an overlapped vibration. Then these drops transform into a gel in an ionic solution, resulting in the encapsulation of the active ingredient (Core) with a polymer (Shell) [27] [28].…”

Section: Introductionmentioning

confidence: 99%

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Application of Antimicrobial Microcapsules on Agrotextiles

Ferrándiz¹,

Capablanca²,

Guzonas³

et al. 2017

JACEN

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The aim of this work was to develop a functional biodegradable nonwoven with antimicrobial microcapsules maintaining the stability and biodegradability of the nonwoven for use in agriculture applications. The nonwoven was obtained using hemp fibers by Wetlaid technology. Microcapsules were prepared by co-extrusion/gelling method with alginate as shell and oregano oil as core material. The microcapsules were developed to protect and control release of oregano oil. Microcapsules were incorporated on the nonwoven by coating method using a natural polymer as a graft material. After incorporating microcapsules, the nonwoven was subjected to several tests in order to determinate the microcapsules fixation and their functionality. The nonwovens were characterized for their antimicrobial activity against different kinds of bacteria and fungi. Nonwoven loaded with microcapsules was found to show good antimicrobial activity in comparison with nonwoven that was not loaded with microcapsules.

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“…In the past we tried with Coulter® Counter and we concluded that it is not a good way to determine the size of the alginate microcapsules due to the use of isotonic solution [27].…”

Section: Morphologymentioning

confidence: 99%

“…Besides, chitosan has the ability to form hydrogels, dimensional polymeric networks with high water absorption capacity [27], which is very interesting from agricultural point of view.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Application of Antimicrobial Microcapsules on Agrotextiles

Ferrándiz¹,

Capablanca²,

Guzonas³

et al. 2017

JACEN

Self Cite

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“…The obtained capsules were filtered and washed three times with distilled water in order to remove any solution of cross linking agent that could be remaining in the capsule wall [7].…”

Section: Microencapsulation By Co-extrusion/gellingmentioning

confidence: 99%

“…This technique involves the formation of droplets through a vibration overlay, by passing the solution of the shell material and the active agent through an extruder device, with controlled drip size and speed. These drops fall on a bath containing a solution with the gelling agent, resulting in the formation of capsules [7] [8].…”

Section: Introductionmentioning

confidence: 99%

Encapsulation of Almond Essential Oil by Co-Extrusion/Gelling Using Chitosan as Wall Material

Lucía¹,

Ferrándiz²,

López³

2017

JEAS

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Encapsulation confers protection to substances as essential oils from processes like oxidation, evaporation or uncontrolled release. In this study almond oil capsules were obtained by co-extrusion/gelling technique. Chitosan was used as shell material and sodium triphosphate pentabasic as cross linking agent. Different encapsulation process variables were studied: cross-linker concentration, nozzles size and potential. Optical microscopy was used to determine the capsules morphology and degradability tests were performed in order to study capsules degradation over time. Results showed that nozzles size and cross linking concentration are key variables to consider in the encapsulation process. Degradability tests showed rapid weight loss.

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Innovative Encapsulation Strategies for Food, Industrial, and Pharmaceutical Applications

Aanniz,

El Omari,

Elouafy

et al. 2024

Chemistry & Biodiversity

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Encapsulation has emerged as a vitally important tool for protecting the integrity of critical chemicals and improving the delivery mechanisms of natural/synthetic drugs, enabling the controlled release of ingredients and the maintenance of their chemical, physical, and biological properties. It is well known that essential oils (EOs) provide a valuable alternative for food preservation, as they help reducing the deterioration of foodstuffs as well as the proliferation of pathogens. Nevertheless, EOs are highly volatile and lipophilic, rendering them insoluble in aqueous systems. In addition, their secondary metabolites are extremely susceptible to environmental factors such as humidity, temperature, light, and oxygen. Therefore, encapsulation of EOs is an innovative option not only for preserving these substances but also for promoting their stability, controlling their release, and optimizing their efficiency and bioavailability. In this sense, this review aimed to describe current techniques and approaches used to incorporate natural hydrophobic compounds, covering EOs. It also examines whether encapsulation technology can be used efficiently in drug discovery and development. Studies have shown that microencapsulation, the use of nanoparticle, and liposomal are the most effective techniques for encapsulating EOs. Other encapsulation systems included spray drying, coacervation, and emulsification.

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Microencapsulation of Rosemary Essential Oil by Co-Extrusion/Gelling Using Alginate as a Wall Material

Cited by 29 publications

References 15 publications

Application of Antimicrobial Microcapsules on Agrotextiles

Application of Antimicrobial Microcapsules on Agrotextiles

Encapsulation of Almond Essential Oil by Co-Extrusion/Gelling Using Chitosan as Wall Material

Innovative Encapsulation Strategies for Food, Industrial, and Pharmaceutical Applications

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