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Sap Collection and Major Components of Acer okamotoanum Nakai Native in Ullungdo  

Moon, Hyun-Shik (Institute of Agriculture & Life Sci., Gyeongsang Natl. Univ.)
Kwon, Su-Duk (Dept. of Forest Inventory, Korea Forest Research Institute)
Publication Information
Korean Journal of Medicinal Crop Science / v.12, no.3, 2004 , pp. 249-254 More about this Journal
Abstract
The collecting amount by DBH class and contents of mineral and free sugar in the sap of Acer okamotoanum Nakai being autogenous in Ullungdo were investigated. The total amount of sap was 376 l Sap of A. okamotoanum were increased with increasing DBH, 67 l (18%), 121 l (32%) and 188 l (50%) from small (below 18 cm), middle $(20{\sim}28\;cm)$ and large (above 30cm) diameter tree, respectively. Amounts of sap was required by big temperature fluctuation in day and night. The contents of solid, ash and sugar were 3.04%, 0.06% and 3.06% in the sap of A. okamotoanum. Free sugar determined in the sap was sucrose with 30.6 g/l, but glucose, fructose and maltose were not detected. The sap of A. okamotoanum was composed of seven kinds of mineral. The prominent minerals in the sap were Ca and K, and the concentrations of Ca and K were 522 mg/l and 309 mg/l, respectively.
Keywords
Acer okamotoanum; DBH class; sap; sugars; minerals;
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