THE EFFECT OF DRYING TEMPERATURE ON THE REDISTRIBUTION OF LOW MOLECULAR WEIGHT SUGARS IN RUBBERWOOD
Redistribution of soluble carbohydrates after drying was investigated by obtaining thin layers, namely L1, L2, L3 and L4 from the surface layer to the half thickness of the rubberwood dimension sawn.Generally, the amount of low molecular weight sugars in rubberwood dried at 120℃, 130℃ and 140℃ has increased from L4 to L2, indicating some pattern of sugar migrations assisted by the water transport process during drying.Time above fiber saturation point is not a limitation factor to the migration process of the soluble carbohydrates observed in this study.After drying, the glucose content detected in all layers of 100℃-, 120℃-, 130℃-, 140℃- and 150℃-dried rubberwood, were found to be relatively lower than the control sample dried at 60℃.These changes in the trend of low molecular weight sugars compositions with comparatively lower glucose content observed after high temperature drying, could be further investigated for potential improvement of the durability of rubberwood lumber.
rubberwood high temperature moisture content gradient HPLC chemical properties
Sik Hueishing Choo Khengten Sarani Zakaria Sahrim Ahmad
Forest Products Division,Forest Research Institute Malaysia,52109 Kepong,Selangor,Malaysia Integral Wood Sdn.Bhd.,42000 Klang,Selangor,Malaysia Faculty of Science and Technology,National University of Malaysia,43600 Bangi,Malaysia
国际会议
The 7th Asia-Pacific Drying Conference(第七届亚太地区干燥会议 ADC2011)
天津
英文
1-8
2011-09-18（万方平台首次上网日期，不代表论文的发表时间）