Abstract:

The fatty acid compositions and their contents in lacquer wax and oil of Chinese lacquer and Japanese lacquer seeds were measured by using Thermo Finnigan Trace DSQ gas chromatography-mass spectrometry to compare the variations of wax and oil between the two species. The main aims of this study were to further develop and utilize the abundant wild lacquer seed resources, to obtain important renewable chemical raw materials and deep-processing products which would replace imported Mineral wax. The results showed: The main fatty acids of the two species were Tetradecanoic acid, Pentadecanoic acid, Hexadecanoic acid, 9-Hexadecenoic acid, Octadecanoic acid, 9-Octadecenoic(z) acid, 9,12-Octadecadienoic(z,z) acid, Eicosanoic acid etc. Three fatty acids with the highest wax content were palmitic acid, oleic acid and satiric acid, accounting for over 97.69% of total fat in the two lacquer wax. The lacquer seed oils of both two species were mainly composed of 11 fatty acids, among which, linoleic acid content was up to higher than 56%. There were little differences are shown in the fatty acids composition and their contents between the two species.

Key words: Toxicodendron succedaneum, lacquer wax, seed oil, fat composition, gas chromatography