C H A P T E R 12

Micro-encapsulation of

Essential Oils for

Antimicrobial Function and

Mosquito Repellency

Katie Lair*

Leicester School of Pharmacy,

Infectious Disease Research Group,

De Montfort University, The Gateway,

Leicester, United Kingdom

* corresponding author¹, e-mail: [email protected]

Jinsong Shen**

School of Fashion and Textiles,

Textile Engineering and Materials (TEAM) Research Group,

De Montfort University, The Gateway,

Leicester, United Kingdom

** corresponding author², e-mail: [email protected]

Anita Soroh

School of Fashion and Textiles,

Textile Engineering and Materials (TEAM) Research Group,

De Montfort University, The Gateway,

Leicester, United Kingdom

CONTENTS

12.1

Introduction ...............................................................

216

12.2

Microencapsulation technology ............................................

217

12.2.1 Complex coacervation .............................................

217

12.2.2 Ionic-Gelation .....................................................

219

12.2.3 Freeze-Drying .....................................................

219

12.2.4 Spray-Drying ......................................................

219

12.2.5 Emulsification .....................................................

220

12.3

Characterization of microcapsules .........................................

220

12.3.1 Particle size and size distribution ...................................

220

12.3.2 Surface charge ....................................................

220

12.3.3 Release of the core material ........................................

221

DOI: 10.1201/9781003035992-12

215