Studies on the chemical components of wild Korean lettuce (Youngia sonchifolia Max.).
1988
Shin S.C.
For the effective utilization of wild Korean lettuce (Youngia sonchifolia Max.), the chemical characteristics, contents of free sugar, amino acid composition, fatty acid composition and minerals were analysed. Free sugars determined from the roots were rhamnose, fructose, glucose, sucrose, maltose, melibiose and raffinose, whereas raffinose was not detected from the leaves. Of amino acid composition in the roots glutamic acid content was largest followed by histidine, aspartic acid, leucine and proline. As for leaves glutamic acid was highest followed by aspartic acid, leucine and histidine. Methionine and cystine were found in low content in both roots and leaves. Major fatty acid composition in total lipid (free and bound) were linoleic, linolenic and palmitic acid in both roots and leaves. P, K and Ca were rich minerals contained in the roots and leaves of wild Youngia sonchifolia Max.
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