共查询到18条相似文献,搜索用时 375 毫秒
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酸枣果肉中挥发性化学成分分析 总被引:3,自引:0,他引:3
报道了用蒸馏-萃取法提取酸枣果肉中挥发性物质,测得酸枣果肉挥发油的含量为1.80%,用GC/MS法从酸枣果肉挥发油中分离并确定出43种化学成分。用峰面积归一化法通过化学工作站数据处理系统,得出各化学成分在挥发油中的相对百分含量。其中主要成分为酸类化合物占挥发油总量的52.26%,酚类化合物为9.34%,酯类化合物为23.05%,醛类化合物为2.77%,醚类化合物为2.66%,烷烃化合物为1.89%,其它类化合物仅占3.77%。共占酸枣果肉中挥发油总量的95.62%。 相似文献
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本文测定了中国雪参根中人参挥发油的含量,并用色谱-质谱联用仪分析了化学成分及百分含量。从中分离出132种化合物,初步鉴定出49种,占挥发油总量的87.73%,有28种化合物尚未见报道。 相似文献
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千山野菊花挥发性化学成分的提取与分析 总被引:3,自引:0,他引:3
报道了用蒸馏-萃取法和同时蒸馏-萃取法提取千山野菊花中挥发性物质,测得用两种方法提取的千山野菊花挥发油含量分别为6.1%和7.0%,用GC/MS法从千山野菊花挥发油中分别分离并确定出34种和29种化学成分,分别占千山野菊花挥发油总检出量的89.47%和90.72%,用峰面积归一化法得出各类化学成分在挥发油中的相对百分含量。 相似文献
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色质联用法分析蜂胶挥发油成分 总被引:6,自引:0,他引:6
用色谱/质谱/计算机联用法分析了蜂胶挥发油(吉林产)的化学成分和相对百分含量。分离出58种化合物,鉴定出26种化合物,占总量的86.79%。 相似文献
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《Journal of Saudi Chemical Society》2014,18(6):972-976
The composition of essential oil extracted from Rhaponticum acaule L. roots growing wild in Algeria was studied by hydrodistillation (HD) and by Head-Space Solid Phase Micro-Extraction (HS-SPME). Quantitative but not qualitative differences have been found in the chemical composition of both analysed samples depending on the extraction method. However, the oil obtained from R. acaule roots shows that aliphatic alcohols were found to be the major class (69.2%), followed by the terpenes (5.5%), alkenes (5.2%) and alkynes (4.0%). In both cases the analysis were carried out using Gas Chromatography (GC) and Gas Chromatography–Mass Spectrometry (GC–MS). Our study shows that HS-SPME extraction could be considered as an alternative technique for the isolation of volatiles from plant. 25 components were identified in oil vs. 39 in the HS-SPME. However the oil composition of roots was mainly represented by a variety of aliphatic hydrocarbons (alcohols, aldehydes and ketones) and terpenes which are known for their antimicrobial activities. 相似文献
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The volatile constituents of the essential oil of Thalictrum minus L. growing wild in Kurdistan-Iran were investigated by GC and GC / MS technique. Twelve compounds, representing 100% of the total oil were identified. The main components were: Thymol (66.63%), para-Cymene (13.05%), gamma-Terpinene (7.32%), Carvacrol (3.70%), 1,8-Cineole (2.02%). 相似文献
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多环芳烃指纹用于渤海采油平台原油的鉴别 总被引:5,自引:0,他引:5
采用气相色谱/质谱方法,对渤海海上4个不同区块、5个平台的6口油井原油进行了烷基化多环芳烃系列化合物和美国环保署(EPA)优先控制多环芳烃系列化合物的准确定性定量分析。通过多环芳烃原始指纹谱图、多环芳烃组分分布模式和特征比值的比较对上述原油进行鉴别。结果证明不同区块的原油中多环芳烃指纹信息不尽相同,即使在同一平台不同油井中所产的原油其指纹也存在一定差异。为确保原油鉴别的准确性,分析过程中必须在仪器的稳定性和样品前处理方面实施严格的质量控制措施。 相似文献