The chemical composition of Undaria pinnatifida Laver (U.P. Layer) were determind.
1. Proximate compositions of U.P. Laver were 22.1% crude protein, 1.3% crude fat, 10.2% crude ash, 66.4% N.F.E, 3 0% crude fiber and 22.8% alginic acid.
2. U.P. Layer protein was chiefly composed of glutamic acid (3.24%) and aspartic acid (2.22%) and considerable quantities of leucine (1.98%), alanine (1.56%), valine (1.32%), lysine (1.22%) and phenylalanine (1.15%).
3. The major fatty acid contents of the lipid extracted from U.P. Layer were linolenic acid (45.2%), palmitic acid (26.14%) and linoleic acid (11.27%) and the minor fatty acid were myristic acid (8.41%), oleic acid (8.11%), and stearic acid (0.87%), respectively. The saturated and unsaturated fatty acid ratio of the oil extracted from U.P. Layer was 35.42/64.58
4. The vitamin contents of U. P. Layer were 28.1 ㎍/g niacin, 25.0 ㎍/g vit. E, 18.8 ㎍/g vit. C. The minerals were composed 1.52% calcium, 0.32% phosphorus, 0.88% magnesium, 0.49% potassium and the others were small quantities.
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