TY - JOUR
T1 - Microencapsulation of essential oil for insect repellent in food packaging system
AU - Chung, Seong Kyun
AU - Seo, Ji Yeon
AU - Lim, Jung Hoon
AU - Park, Hyung Hwan
AU - Yea, Myeong Jai
AU - Park, Hyun Jin
PY - 2013/5
Y1 - 2013/5
N2 - Microcapsules containing thyme oil were prepared by in situ polymerization, using melamine-formaldehyde prepolymer as a wall material and 3 different emulsifiers (pluronic F-127, tween 80, and sodium lauryl sulfate [SLS]). The general characteristics and release behavior of microcapsules, and their repellent effect against insects were investigated. The morphology of microcapsules using SLS was spherical shape with smooth surface. Microcapsules began to degrade at 150 °C. The particle size ranged from 1 to 10 μm and the loading efficiency of thyme oil was clearly affected by the emulsifier type. The highest loading efficiency appeared in microcapsules using SLS, which have good thermal resistance and smooth surface. The release rate of thyme oil from microcapsules was not only dependent on the storage temperature but also emulsifier type and microcapsules showed the sustained release properties for a long time. Diets, which were mixed with encapsulated thyme oil, expressed high insect repellent efficacy over 90% for 4 wk. Practical Application: Essential oil has various pest-control characteristics, including repellent, ovicidal, and antifeedant efficacy. This work showed the sustained release properties and long-lasting repellency of encapsulated essential oil. The results suggest that the great potential of essential oil microcapsules can be applied in coating or printing of food packaging materials for the insects repelling effects.
AB - Microcapsules containing thyme oil were prepared by in situ polymerization, using melamine-formaldehyde prepolymer as a wall material and 3 different emulsifiers (pluronic F-127, tween 80, and sodium lauryl sulfate [SLS]). The general characteristics and release behavior of microcapsules, and their repellent effect against insects were investigated. The morphology of microcapsules using SLS was spherical shape with smooth surface. Microcapsules began to degrade at 150 °C. The particle size ranged from 1 to 10 μm and the loading efficiency of thyme oil was clearly affected by the emulsifier type. The highest loading efficiency appeared in microcapsules using SLS, which have good thermal resistance and smooth surface. The release rate of thyme oil from microcapsules was not only dependent on the storage temperature but also emulsifier type and microcapsules showed the sustained release properties for a long time. Diets, which were mixed with encapsulated thyme oil, expressed high insect repellent efficacy over 90% for 4 wk. Practical Application: Essential oil has various pest-control characteristics, including repellent, ovicidal, and antifeedant efficacy. This work showed the sustained release properties and long-lasting repellency of encapsulated essential oil. The results suggest that the great potential of essential oil microcapsules can be applied in coating or printing of food packaging materials for the insects repelling effects.
KW - Anti-insect packaging
KW - Long-lasting repellency
KW - Microcapsule
KW - Sustained release
KW - Thyme oil
UR - http://www.scopus.com/inward/record.url?scp=84877601739&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84877601739&partnerID=8YFLogxK
U2 - 10.1111/1750-3841.12111
DO - 10.1111/1750-3841.12111
M3 - Article
C2 - 23551154
AN - SCOPUS:84877601739
VL - 78
SP - E709-E714
JO - Journal of Food Science
JF - Journal of Food Science
SN - 0022-1147
IS - 5
ER -