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

作　　者：Celia Dolcà Marcela Ferrándiz Lucia Capablanca Esther Franco Elena Mira Fernanda López David García 

机构地区：[1]Biotechnology Research Group,Textile Research Institute(AITEX),Alcoy,Spain [2]Polytechnic University of Valencia(UPV),Campus de Alcoy,Alcoy,Spain

出　　处：《Journal of Encapsulation and Adsorption Sciences》2015年第3期121-130,共10页封装与吸附期刊（英文）

基　　金：The autors thank IVACE(Institut Valenciàde Competitivitat Empresarial,Spain);FEDER(Fondo Europeo de Desarrollo Regional,Europe)for the financial support

摘　　要：An essential oil is the volatile lipophilic component extracted from plants. Microencapsulation systems protect the essential oil from degradation and evaporation, and at the same time allow a sustained release. This work analyzed and characterized the rosemary essential oil microcapsules prepared by co-extrusion technique using alginate as wall material and calcium chloride as cross linker. Several instrumental techniques were used: optical microscopy, coulter counter, Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), termogravimetric analysis (TGA), spectrophotometry, antimicrobial test and chromatography. Results show that rosemary oil has pesticidal properties, and its microencapsulation allows knowing that these properties remain inside the microcapsules.An essential oil is the volatile lipophilic component extracted from plants. Microencapsulation systems protect the essential oil from degradation and evaporation, and at the same time allow a sustained release. This work analyzed and characterized the rosemary essential oil microcapsules prepared by co-extrusion technique using alginate as wall material and calcium chloride as cross linker. Several instrumental techniques were used: optical microscopy, coulter counter, Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), termogravimetric analysis (TGA), spectrophotometry, antimicrobial test and chromatography. Results show that rosemary oil has pesticidal properties, and its microencapsulation allows knowing that these properties remain inside the microcapsules.

关 键 词：Sodium Alginate Rosemary Oil CO-EXTRUSION GELLING FTIR DSC TGA 

分 类 号：O6[理学—化学]