Gum arabic and collagen hydrolysate extracted from hide fleshing wastes as novel wall materials for microencapsulation of Origanum onites L. essential oil through complex coacervation

The purpose of this study was to attempt the encapsulation of lemongrass (Cymbopogon citratus) essential oil utilizing spray drying technique. An array of process parameters including concentration of wall (15–30%), type of wall materials (maltodextrin, maltodextrin and gum Arabic mixture), and concentration of essential oil (0.5–2.0%) were thoroughly investigated. The results show that the use of sole maltodextrin as encapsulant gave microcapsules characteristics comparable to that of powder produced using maltodextrin and gum Arabic mixture. The encapsulation process that was performed with maltodextrin at the concentration of 30% as wall material and lemongrass essential oil at the concentration of 1.5% as core material showed highest drying yield (84.49%), microencapsulation yield (89.31%) and microencapsulation efficiency (84.75%). Encapsulated essential oils retained most of their major constituents in comparison with the bare essential oils without any significant compromise in product quality.

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Microencapsulation of Garlic Extract by Complex Coacervation Using Whey Protein Isolate/Chitosan and Gum Arabic/Chitosan as Wall Materials: Influence of Anionic Biopolymers on the Physicochemical and Structural Properties of Microparticles

Food and Bioprocess Technology ◽

10.1007/s11947-019-02375-y ◽

2019 ◽

Vol 12 (12) ◽

pp. 2093-2106 ◽

Cited By ~ 5

Author(s):

Loleny Tavares ◽

Hélio Lopes Barbosa Barros ◽

Júlio César Pacheco Vaghetti ◽

Caciano Pelayo Zapata Noreña

Keyword(s):

Whey Protein ◽

Structural Properties ◽

Gum Arabic ◽

Whey Protein Isolate ◽

Protein Isolate ◽

Garlic Extract ◽

Complex Coacervation ◽

Wall Materials ◽

Physicochemical And Structural Properties

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Surface Modification of TiO2 Nanopaticles with Good Reflective Properties for Electric Ink

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.239-242.2470 ◽

2011 ◽

Vol 239-242 ◽

pp. 2470-2473

Author(s):

Deng Wu Wang ◽

Fang Wang ◽

Su De Ma ◽

Zong Cheng Miao ◽

Xiao Peng Zhao

Keyword(s):

Surface Modification ◽

Electric Field ◽

Stearic Acid ◽

Response Time ◽

Fiber Optic ◽

Gum Arabic ◽

Complex Coacervation ◽

Dc Electric Field ◽

Wall Materials ◽

Aggregation Phenomena

To obtain the microencapsulated electric ink with good display properties, the bare TiO2nanoparticles were modified by stearic acid (SA), and the white encapsulated electric ink was prepared by complex coacervation using Gelatin/gum arabic (GA) as wall materials. The bare and modified TiO2nanoparitcles were characterized by SEM. Moreover, the fiber-optic spectrometer was also used to measure the reflective properties of the two particles. It was shown that the aggregation phenomena can be greatly decreased by surface modification, and also that the reflective properties can be maintained by this method. Finally, the particles in microcapsules possessed reversible response to dc electric field, and the response time was ~150 ms.

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