Composition of urushiol and cardanol from Japanese lacquer tree and related origins
Wood may be protected against insects and weathering based on the paints. Japan has been used to protect wood from weathering, insects, checking that ordinarily develop when unprotected wood is exposed to the weather. Japaned wood gives a hard, durable, various gloss especially black. The yield of culture-urus hiol obtained from Japanese lacquer tree (Rhus vermiciflua Stokes) was 0.6% based on the dry weight of Japanese lacquer root. 3-(pentadecatrienyl- 8' ,11' ,14') catechol and 3-(pentadecatrienyl- 8', 11' ,13')-phenol were obtained from lacquer-urushiol. The composition of urushiol and cardanol was investigated from different origins including adventitious root, natural root, Japanese lacquer and cashew nut shell liquid (CNSL). Also, the composition of the olefinic components of urushiol and cardanol from different origins was examined. On the other hand, 0.4% of cardanol existed in Japanese lacquer. Cardanol exists in both Japanese lacquer and the tissue culture of Japanese lacquer tree. The isolation of cardanol from Japanese lacquer and the adventitious roots of tissue cultures supports the presumed path way of urushiol, cardanol, cardol, and anacardic acid.