1. Laboratory of Biocomposite Technology, Institute of Tropical Forestry and Forest Products , Universiti Putra Malaysia , UPM Serdang 43400 , Selangor , Malaysia
2. Department of Chemistry, Faculty of Science , Universiti Putra Malaysia , UPM Serdang 43400 , Selangor , Malaysia
3. Centre of Foundation Studies for Agricultural Science , Universiti Putra Malaysia , UPM Serdang 43400 , Selangor , Malaysia