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Proximate analyses of free sugars, free amino acids, fatty acids, total vitamin C and the soluble tannin content of the leaf and seed of Dendropanax morbifera Lev. were determined. Moisture content was 70.2% in leaf and 72.6% in seed, and crude protein contents were 1.2% in leaf and 6.2% in seed, and ash contents were 1.7% in leaf and 0.9% in seed. Total vitamin C and soluble tannin in leaf were 56.9% and 10.7% which were five times and eleven times higher in seed, respectively. Free sugar content in leaf was higher than that in seed, with the major free sugars consisting of sucrose, glucose and fructose. Turanose and xylose were not detected in leaf, but were detected in seed in small amounts. Unsaturated fatty acids were predominant in both of leaf and seed, but major fatty acids were quite different from each other. Low levels of free amino acids were found to consist mainly of arginine, aspartic acid and glutamic acid. The highest content of mineral elements in leaf and seed were calcium and potassium, respectively.
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