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作 者:曾慧英[1] 谢建春[1] 卢立晃[2] 韩蕙阑[1] 孙宝国[1]
机构地区:[1]北京工商大学北京市食品风味化学重点实验室,北京100048 [2]浙江省温州市质量技术监督检测院,浙江温州325000
出 处:《精细化工》2011年第11期1112-1116,共5页Fine Chemicals
基 金:国家自然科学基金项目资助(31171755);北京市教委科技发展计划重点和北京市自然科学基金项目资助(KZ201010011011)~~
摘 要:分别以二氯甲烷和乙醚作溶剂,采用低温冷凝,同时蒸馏萃取南方红豆杉干叶挥发性成分,极性色谱柱(DB-WAX)气-质联机分析。鉴定出63种化合物,主要是脂肪族类(39种),其次为芳香族类(11种),而萜类化合物占比例很小(6种)。按两种萃取溶剂所得分析结果平均值,主要成分是十六烷酸(21.19%)、十四烷酸(8.87%)、亚麻酸乙酯(3.49%)。相比已有的关于南方红豆杉叶油成分分析的报道,新鉴定出己醛、2-己烯醛、1-辛烯-3-醇、2,4-庚二烯醛、苯乙酮等34种有青香、花香、果香香气的微量或痕量低沸点化合物。所鉴定化合物以邻二氯苯为内标定量,总含量为88.16μg/g红豆杉叶。With methylene dichloride and diethyl ether being the solvent respectively, and with low temperature water bath condensation utilized on simultaneous distillation and solvent extraction (SDE), the volatiles in the dry leaves of Taxus chinensis var mairei were extracted and then analyzed on a polar column of DB-WAX by means of GC/MS. Sixty-three compounds were identified, among which the aliphatic class (39 kinds of compounds) was the most abundant,followed by the aromatic (11 kinds),whereas the class of terpenoid was rather less (6 kinds ). Based on the average results by the two extraction solvents, hexadecanoic acid (21.19%) , tetradecanoic acid ( 8.87% ) , and ethyl linolenate ( 3.49% ) were the major components. In contrast with what had been reported previously on volatile composition of Taxus chinensis vat mairei,34 trace components of low boiling point were new identifications,e, g. hexanal,2- hexenal, 1-octene-3-ol, 2,4-heptadienal, and acetophenone, all of which had green, floral, and fruity aroma. Subsequently, with 1,2-dichlorobenzene as internal standard, each compound identified was quantified;the total content of those identified compounds was 88.16 μg/g of dry leaves.
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