1. Department of Resource Utilization, Guangxi Key Laboratory of Special Non-wood Forests Cultivation and Utilization, Nanning, China
2. Institute of Chemical Industry of Forest Products, Guangxi Forestry Research Institute, Nanning, China
3. Faculty of Agricultural Engineering, Guangxi Vocational & Technical College, Nanning, China
4. Faculty of Health & Medical Science, School of Bioscience, Taylors University, Subang Jaya, Malaysia