1. Department of Chemical Engineering; Faculty of Engineering; Kasetsart University; 50 Phaholyothin Road Jatujak Bangkok 10900 Thailand
2. Center for Advanced Studies in Nanotechnology and Its Applications in Chemical; Food and Agricultural Industries; Kasetsart University; Bangkok 10900 Thailand
3. Department of Chemical and Materials Engineering; University of Alberta; 9107-116 Street Edmonton, Alberta T6G 2V4 Canada