1. Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, Padang, Indonesia
2. Chemical Industry Institute, Korea National University of Transportation, Chungju, Republic of Korea
3. Department of Chemical and Biological Engineering, Korea National University of Transportation, Chungju, Republic of Korea
4. Sumatran Biota Laboratory, Faculty of Pharmacy, Universitas Andalas, Padang, Indonesia
5. Department of Biotechnology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Malang, Indonesia
6. Department of Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Bandung, Indonesia