1. Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km 21, Jatinangor 45363, Indonesia
2. Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Nusa Bangsa, Jl Sholeh Iskandar Km 4, Bogor 16166, Indonesia
3. Central Laboratory, Universitas Padjadjaran, Jatinangor 45363, Indonesia
4. Department of Chemistry, Faculty of Sciences, University of Malaya, Kuala Lumpur 59100, Malaysia
5. Department of Food, Life and Environment Sciences, Faculty of Agriculture, Yamagata University, Yamagata 9978555, Japan