1. Department of Biological Chemistry, Faculty of Agriculture, Yamaguchi University 753-8515, Japan
2. Department of Fishery Products, Faculty of Fisheries, Kasetsart University Chatuchak Bangkok 10900, Thailand Department of Fishery Products, Faculty of Fisheries, Kasetsart University Chatuchak Bangkok 10900, Thailand
3. Department of Fishery Biology, Faculty of Fisheries, Kasetsart University Chatuchak Bangkok 10900, Thailand