利用固相微萃取法(SPME)和气质联用(GC-MS)技术对中国产黑珍珠莲雾Syzyzgium samarangense果实5个不同发育阶段的挥发物进行分析.共检测出44种物质,主要包括萜烯类、醇类、酮类和酯类,其中仅有8种物质是各阶段所共有的,它们是(-)-α-(玷)王巴烯、β-石竹烯、á-芹子烯、à-芹子烯、α-依兰油烯、6-杜松烯、2,4 ′,5-三甲基二苯基甲烷、邻苯二甲酸二异丁酯.酮类主要包括莰酮和反式-β-紫罗酮-5,6-环氧化物,酯类化合物包括邻苯二甲酸二异丁酯和乙酸异丁酯.在果实的不同发育阶段,挥发物成分与含量差异很大,萜烯类的相对含量随着果实的成熟而减少,莰酮和邻苯二甲酸二异丁酯的含量随着果实的成熟逐渐升高,反式-β-紫罗酮-5,6-环氧化物与乙酸异丁酯仅在成熟期才大量出现.%The volatile constituents from five different developmental stages of black pearl wax apple fruit ( Syzyzgium samarangense) growing in China were analysed by solid phase microextraction (SPME) and gas chromatography-mass spectrometry (GC-MS). Forty-four compounds were identified in wax apple, a-mong which volatiles, terpenoids, alcohols, ketones and esters were the major components, among which eight compounds were observed at all five developmental stages, i. e. , (-)-α-copaene, β-caryophyllene, a-selinene, a-selinene, α-muurolene, δ-cadinene, 2,4', 5-trimethyl diphenylmethane, 1, 2-benzenedi-carboxylic acid bis[2-methylpropyl] ester. Ketones of wax apple fruit included camphor and trans-beta-ionone-5 , 6-epoxide, esters components comprised 1, 2-benzenedicarboxylic acid bis [ 2-methylpropyl ] ester and acetic acid, 2-methylpropyl ester. The volatile compositions from five developmental stages of the fruit were quite different. The relative contents of terpenoids gradually decreased, and those of camphor and 1,2-benzenedicarboxylic acid bis [2-methylpropyl] ester increased along with the fruit ripening. Trans-beta-ionone-5,6-epoxide and acetic acid, 2-methylpropyl ester were only found at ripe stage.
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