不同种源黄果厚壳桂种子脂肪酸组成及叶片化学成分差异.

[ Objective] The present paper aimed to analyze the chemical composition and content of volatile oil in the seeds and leaves of different provenances of Cryptocarya concinna, and to provide theoretical basis for the comprehensive development and utilization of C. concinna. [Method] The volatile oil was extracted from the seeds and leaves of 8 provenances [Jinxiu(JX), Yongfu(YF), Longsbeng (LS), Shangsi (SSl and SS2), Guiping (GP), Longan (LA) and Wuming (WM)] by Soxblet extraction method. The oil content of the seeds was determined. The fatty acid composition of the volatile oil in the seeds was determined by gas chromatography( GC). The chemical composition of the volatile oil in the leaves was determined by gas chromatography-mass spectrometry (GC-MS), and comparative analysis of chemical constituents of volatile oil from different provenances of C. concinna was conducted. [Result] The average oil content of the seeds from 8 provenances was 1. 70% -4. 67%, and the volatile oil extraction rate of the seeds from YF provenance was the highest. Nine types of fatty acids were detected in the volatile oil of its seeds, all of which were mainly unsaturated fatty acids, with a content of 76. 45 % - 81. 15 %. A total of 89 chemical components were identified from the volatile oil of the leaves of 8 provenances, including 20 alcohols, 2 phenols, 1 aldehyde, 11 ketones,8 alkanes, 24 olefins, 19 esters and 4 other types. There were differences in the composition and content of volatile oil compounds in leaves of different provenances. Among them, the relative content of stigmastan-3, 5-diene was the highest in the volatile oil of SSl, GP and LA provenances, reaching 39. 31 %, 32. 61 % and 45. 01 %, respectively. The relative content of (-) -spathulenol was the highest in the volatile oil of YF, LS and WM provenances, which was 23. 98%, 18. 70% and 16. 59%, respectively. The relative content of-y-sitosterol in the volatile oil of SS2 provenance leaves was the highest, which was 23. 45%. The relative content of 16-hentriacontanone was the highest in the volatile oil of JX provenance leaves, which was 30. 91 %. Each provenance had its own unique chemical composition. [Conclusion] The extraction rate of volatile oil from the seeds of C. concinna from YF provenance was the highest; The content of unsaturated fatty acids in the volatile oil of 8 provenances was higher than that of saturated fatty acids. The volatile oils of the leaves of different provenances of C. concinna contained a variety of common chemical components and unique components, but the contents were different. Therefore, in the development of perfume industry, daily chemical industry, pharmaceutical industry and health care products, the appropriate provenances of C. concinna can be selected according to different oil characteristics and chemical composition contents. [ABSTRACT FROM AUTHOR]