Volatile Constituents from the Fruits of Lindera glauca (Sieb. et Zucc.) with Different Maturities

Abstract

The volatiles of Lindera glauca (Sieb. et Zucc.) fruits with different maturities, grown in Jigongshan mountain, Henan China, were isolated by hydro-distillation method and analyzed by GC-qMS. Eighty seven constituents were identified in the essential oil from the middle July samples, comprising 73.94 % of the volatiles, and the major components were sesquiterpene hydrocarbons (40.02%) and monoterpene hydrocarbons (30.61%), of which β-ocimene (12.99%) is the major one, followed by α-pinene (4.07%) and β-caryophyllene (3.73%). In the oil from the middle August samples, the major components of the identified 72 components, comprising 88.64% of the essential oil, were monoterpene hydrocarbons (57.75%) and sesquiterpene hydrocarbons (28.83%), and also β-ocimene (37.40%) is the major constituent, followed by caryophyllene (3.71%), myrene (3.54%) and α-pinene (3.35%). While in the essential oil isolated from fully ripe fruits collected in middle September, 74 constituents comprising 87.27% which included 20 monoterpenoids (44.71%) and 43 sesquiterpenoids (38.32%) were identified, and β-ocimene was also the major constituent (30.30%). It was also noticed that the volatile content rose along with the maturity of the fruits. The essential oil yields in the above three samples were 0.6%, 1.2% and 1.4%, respectively.

Key words:

• Lindera glauca
• maturities
• essential oil
• GC-MS