Study on Chemical Components of Oleoresin from Different Wild Sindora glabra Individuals in Jianfengling, Hainan, China

ObjectiveTo provide references for utilization of Sindora glabra oleoresin and development of value-added products.MethodThe oleoresin samples from seven wild individuals of S. glabra were collected in Jianfengling of Hainan Island, and their chemical components were analyzed by gas chromatography-mass spectrometry.ResultNineteen compounds were identified and two compounds were preliminarily decided, which represented over 94% of the total contents of the oleoresin samples. The main compounds were sesquiterpenes and diterpenes, among which there were nineteen kinds of sesquiterpenes, accounting for more than 70% of total contents and two kinds of diterpenes, representing for more than 14% of those. The α-Copaene, β-caryophyllene and δ-cadinene were the dominant components of S. glabra oleoresins which were relatively stable among different samples, representing over two thirds of sesquiterpenes and more than one half of total compounds; the diterpenes were also the main components of oleoresin, whose contents in different oleoresin samples varied from 14.52% to 25.10%. Compared with the oleoresin in S. glabra from Diaoluoshan, the oleoresin in S. glabra from Jianfengling contained higher volatile components and the compounds with the highest contents were also different.ConclusionThe oleoresin in wild S. glabra from Jianfengling contained nineteen volatile compounds with the highest content of α-Copaene while that from Diaoluoshan had eleven volatile compounds with the highest content of α-ylangene. There were great differences in volatile components and oleoresin contents between S. glabra individuals from the two areas. In the same location, the variation of components and contents of oleoresins were small among different samples but great among different collection time.