1. Applied Mathematics Laboratory, Department of Mathematics, Universitas Hasanuddin, Kota Makassar, Indonesia;
2. Faculty of Agro-industrial Technology, Department of Agro-industrial Technology, Universitas Padjadjaran, Sumedang, Indonesia;
3. Research Collaboration Center for Biomass and Biorefinery between BRIN, Universitas Padjadjaran, Sumedang, Indonesia
4. Faculty of Agricultural Technology, Department of Agro-industrial Technology, Universitas Brawijaya, Malang, Indonesia;
5. Faculty of Mathematics and Natural Sciences, Departement of Statistics, Universitas Hasanuddin, Kota Makassar, Indonesia;