Studies on Chemical Constituents of Volatile Oil of Ocimum basilicum from Two Different Sources
Objective; To analyze the chemical constituents of volatile oil from Ocimum basilicum collected in two different sources. Method: The volatile components were extracted by steam distillation method, and analyzed by GC-MS. Peak area normalization method was used for the relative content of volatile oil. TLC was used for the identification of two samples. Result; Twenty-nine components were identified in 0. basilicum from Guangzhou, which accounted for 99.90% of the total relative content. The main components were p-allylanisole (83.082%), linalool 4. 734% ), tau-cadinol (2.715%), eucalyptol (2.251%). Thirty-one components were identified in 0. basilicum from Bozhou, which accounted for 98.65% of the total relative content. The main components were linalool (26.91%), methyl cinnamate (21.85%), tau-cadinol ( 17.41%), ledol (14. 154% ). Two characteristic spots could not be identified in 0. basilicum. from Bozhou but from Guangzhou. Conclusion: The volatile oil from different sources had obviously different chemical constituents. GC-MS and TLC can be used for the identification and analysis of sources. It pointed out that 0. basilicum should clear about its quality and sources before exploitation and application.