1. University Malaysia Pahang Faculty of Chemical and Process Engineering Technology Lebuh Persiaran Tun Khalil Yaakob 26300 Pekan Malaysia
2. Politeknik Kelapa Sawit Citra Widya Edukasi Production Technology of Plantation Crop Program Jl. Gapura No. 8 17520 Bekasi Indonesia
3. Institut Teknologi Bandung Department of Chemical Engineering Jl. Ganesha No. 10 40132 Bandung Indonesia
4. Institut Teknologi Bandung Department of Bioenergy and Chemurgy Engineering Kampus Jatinangor 45363 Sumedang West Java Indonesia