Analysis on chemical constituents of volatile oil in Magnolia officinalis var. biloba produced in Jinggangshan / 中草药

ABSTRACT

Objective: To research the constituents of the volatile oil from the fruits, flowers, skins, and leaves of Magnolia officinalis var. biloba produced in Jinggangshan. This research will provide the medicinal nature proof for the different parts of M. officinalis var. biloba. Methods: The volatile oil from M. officinalis var. biloba was extracted by steam distillation, and the components of the volatile oil were separated and structurally identified by gas chromatlgraphy-mass spectrometry. The relative percentage of various volatile oil ingredients was determined by the area normalizing method in gas chromatography. Results: All 75 compounds were identified from M. officinalis var. biloba in Jinggangshan. Among them 42 compounds like 1-caryophyllene and α-pinene in nuts were identified and the relative content was 98.7%. Nineteen compounds like 4-hydroxy-4-methyl-2-pentanone and camphene in the flowers were identified and the relative content was 77.59%. Twenty-four compounds like α-eudesmol, and 44 alkanes in the skins were identified and the relative content was 77.92%. Thirty-two compounds like 1-caryophyllene and α-eudesmol in the leaves were identified and the relative content was 76.48%. The common constituents were 1-caryophyllene and triteracontane. The comparative analysis showed that the volatile oils existed in M. officinalis var. biloba. Conclusion: Based on the above research, we suggest that the leaves of M. officinalis var. biloba can replace the skins of M. officinalis var. biloba as medicine, The fruits of M. officinalis var. biloba also can be used to heal the desease; The flowers of M. officinalis var. biloba have little active content, which can not be used as medicine.