GC-MS Analysis of Volatile Constituents from Five Batches of Artificial Chinese Eaglewood in Huazhou

Key words: 
• Eaglewood /
• chemical constituents /
• GC-MS /
• 5,11-epoxy guaiane sesquiterpene lactone

Abstract: The volatile constituents and their relative contents of five batches of Chinese eaglewood sampled from Huazhou,Guangdong,China were analyzed by GC-MS to investigate the influence of different eaglewood inducing methods and time on the quality of Chinese eaglewood from the same region. The highest yield of volatile oil in the five batches of the samples was 4. 93% and the lowest was 2. 29%. ? From all the samples were identified 72 peaks,of which 12 peaks were common. The results showed that all the volatile oils of the five samples were mainly composed of sesquiterpenes,2-（ 2-phenylethyl） chromones,and fatty acids. ? A lactone with an aromatic smell of the eaglewood induced from Aquilaria crassna,5,11-epoxy guaiane sesquiterpene lactone,was detected for the first time from the common Chinese eaglewood induced for 8 years by using the iron nailing method. The fire burning method induced eaglewood faster than the iron nailing method and cold iron holing method. The eaglewood with longer inducing time produced a higher yield of volatile oil,and the compounds of the volatile oil and their contents were much more consistent,indicating better quality of the volatile oils.