1. Department of Chemistry, Faculty of Science and Informatics, Universitas Jenderal Achmad Yani, Cimahi 40531, Indonesia
2. Departments of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia
3. Central Laboratory, Universitas Padjadjaran, Jatinangor 45363, Indonesia
4. Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia