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3种萃取方式柚子花挥发性成分的GC-MS分析及对比研究
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作者 宋宇 曹馨慈 高元吉 《食品与药品》 CAS 2024年第2期179-185,共7页
目的探究不同前处理方法对柚子花中挥发性有机物(VOC)种类及含量的影响。方法以柚子花为研究对象,采用静态顶空(SHS)、固相微萃取(SPME)和吹扫捕集(PT)3种不同萃取方式对样品进行富集,结合气质联用(GC-MS)技术对柚子花中的VOC进行定性... 目的探究不同前处理方法对柚子花中挥发性有机物(VOC)种类及含量的影响。方法以柚子花为研究对象,采用静态顶空(SHS)、固相微萃取(SPME)和吹扫捕集(PT)3种不同萃取方式对样品进行富集,结合气质联用(GC-MS)技术对柚子花中的VOC进行定性和相对定量分析,并对其挥发性成分进行主成分分析。结果采用3种不同萃取方式结合GC-MS共鉴别柚子花中萜烯类、醇类、酯类、胺类、烷烃类共5类、70种化合物;其中,SPME法检测到的化合物总数最多,共检测到5类共44种化合物;SHS法和PT法分别检测到4类9种和5类30种化合物。主成分分析显示α-月桂烯、γ-松油烯、水芹烯、柠檬烯等是柚子花挥发性成分的主要贡献物质。结论不同萃取方法结合GC-MS技术检测出的柚子花挥发性成分具有差异性,可为柚子花资源的药用研究和开发提供支持。 展开更多
关键词 静态顶空(SHS) 固相微萃取(SPME) 吹扫捕集(PT) 气质联用(gc-MS) 柚子花 挥发性有机物
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自动固相微萃取(SPM E)GC-MS、GC-MS-MS法检测环境水中有机磷杀虫剂的研究 被引量:6
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作者 魏立青 郭杰 +1 位作者 蒋华宇 种法运 《分析测试学报》 CAS CSCD 北大核心 2004年第z1期226-230,共5页
  固相微萃取(solid-phase microextraction,SPME)是20世纪90年代发展起来的一种样品前处理技术,与传统的液-液提取、液-固提取相比,SPME更适用于提取、浓缩液态或气态的挥发性和半挥发性物质,SPME技术可将采样、萃取、浓缩和样本引...   固相微萃取(solid-phase microextraction,SPME)是20世纪90年代发展起来的一种样品前处理技术,与传统的液-液提取、液-固提取相比,SPME更适用于提取、浓缩液态或气态的挥发性和半挥发性物质,SPME技术可将采样、萃取、浓缩和样本引入集中于一个步骤完成,尤其随着自动SPME与GC-MS等联用技术的日益完善,使SPME技术优点得到更充分的发挥.…… 展开更多
关键词 Organophosphate insecticides Auto Solid-phase microextraction(auto-SPME) gas chromatographymass spectrometry(gc - MS) gas chromatography - multiple mass spectrometry(gc - MS - MS)
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应用GC-O和GC-MS研究豉香型白酒挥发性香气成分 被引量:47
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作者 范海燕 范文来 徐岩 《食品与发酵工业》 CAS CSCD 北大核心 2015年第4期147-152,共6页
应用液液萃取法(LLE)萃取豉香型白酒的香气物质,根据酸碱性将萃取组分分成中-碱性组分和酸性-水溶性组分,运用气相色谱-闻香法(GC-O)和气相色谱-质谱(GC-MS)技术分别进行香气成分分析。在豉香型白酒中共检测出52种香气物质:羰基化合物1... 应用液液萃取法(LLE)萃取豉香型白酒的香气物质,根据酸碱性将萃取组分分成中-碱性组分和酸性-水溶性组分,运用气相色谱-闻香法(GC-O)和气相色谱-质谱(GC-MS)技术分别进行香气成分分析。在豉香型白酒中共检测出52种香气物质:羰基化合物13种、酯类10种、酸类9种、芳香族类8种、醇类7种、硫化物2种、内酯类2种和呋喃类1种。其中,呈脂肪气味的反-2-辛烯醛、反-2-壬烯醛、反-2-癸烯醛、反-2-十一烯醛和反,反-2,4-癸二烯醛是在豉香型白酒中首次发现的化合物。研究发现豉香型白酒中香气强度较大(≥3.0)的化合物有:2-苯乙醇、反-2-壬烯醛、己酸乙酯、反-2-辛烯醛、γ-壬内酯、辛醛、3-甲基-1-丁醇、壬醛、3-甲硫基-1-丙醛、反-2-癸烯醛、乙酸和丁酸,这些物质对豉香型白酒的风味贡献较大。 展开更多
关键词 豉香型白酒 气相色谱-闻香法(gc-O) 气相色谱-质谱(gc-MS) 香气物质 反-2-烯醛 二烯醛类
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广防己挥发油的GC-MS指纹图谱研究 被引量:7
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作者 吴惠勤 林晓珊 +2 位作者 黄晓兰 黄芳 李逸 《分析测试学报》 CAS CSCD 北大核心 2004年第z1期95-97,共3页
  防己药材主要分粉防己和木防己两类,木防己包括广防己和汉中防己.广防己为马兜铃科植物广防己Aristolochia fangchi Y.C.WuexL.D.Chou.et S.M.Hwang的干燥根[1],习称"木防己"、"水防己",主产于广东、广西,具有...   防己药材主要分粉防己和木防己两类,木防己包括广防己和汉中防己.广防己为马兜铃科植物广防己Aristolochia fangchi Y.C.WuexL.D.Chou.et S.M.Hwang的干燥根[1],习称"木防己"、"水防己",主产于广东、广西,具有祛风止痛、清热利水之功效[2].…… 展开更多
关键词 Mass spectrometiy Aristolochia fangchi Y.C. WuexL.D.Chou. et S.M. Hwang gas chromatography - mass spectrometry(gc - MS) FINGERPRINT
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GC-MS Analysis of Essential oil and n-Hexane Extract from Moso Bamboo 被引量:2
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作者 刘志明 任海青 《Agricultural Science & Technology》 CAS 2012年第5期993-996,共4页
[Objective] This study aimed to analyze the chemical composition and yield of essential oil and n-hexane extract from moso bamboo to find active compounds with potential value. [Method] Essential oil and n-hexane extr... [Objective] This study aimed to analyze the chemical composition and yield of essential oil and n-hexane extract from moso bamboo to find active compounds with potential value. [Method] Essential oil and n-hexane extract were respectively extracted from moso bamboo of four different ages by using hydrodistillation and ultrasonic-assisted extraction with n-hexane, and analyzed with gas chromatography/mass spectrometry (GC/MS). [Result] The results show that cedrol (46.39%) is the first principal volatile component in essential oil of the middle stem of 7-year old moso bamboo; dibutyl phthalate (59.46%) is the first principal volatile component in n-hexane extract of the middle stem of 3-year old moso bamboo; yield of n-hexane extract is higher than that of essential oil from moso bamboo. [Conclusion] Cedrol is an active compound with potential value. 展开更多
关键词 Moso bamboo HYDRODISTILLATION Ultrasonic assistance n-hexane extract gas chromatography/mass spectrometry gc/ms)
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基于GC-MS技术分析不同贮藏年份陈皮挥发性成分差异 被引量:13
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作者 刘丽娜 傅曼琴 +3 位作者 徐玉娟 吴继军 余元善 温靖 《广东农业科学》 CAS 2020年第9期114-120,共7页
【目的】了解不同年份陈皮挥发性成分差异。【方法】以贮藏时间分别为1年(2017年)、5年(2013年)和15年(2003年)的新会陈皮为研究对象,采用顶空固相微萃取(HS-SPME)结合气相色谱—质谱联用(GC-MS)技术分析陈皮挥发性成分。【结果】3个不... 【目的】了解不同年份陈皮挥发性成分差异。【方法】以贮藏时间分别为1年(2017年)、5年(2013年)和15年(2003年)的新会陈皮为研究对象,采用顶空固相微萃取(HS-SPME)结合气相色谱—质谱联用(GC-MS)技术分析陈皮挥发性成分。【结果】3个不同贮藏年份的陈皮中共检测到61种化合物,且在一定贮藏年限内,随着贮藏时间延长,陈皮挥发性成分的种类及其含量发生显著改变,其中贮藏1年陈皮中有34种挥发性成分,贮藏5年和贮藏15年陈皮中分别有38、39种。在陈皮贮藏过程中,烯烃类和萘类化合物相对含量先增加后减少,酯类、酚类和醇类物质含量先减少后增加,醛类化合物含量逐年递减,而烷烃类物质只在贮藏5年的陈皮中检测到。【结论】在陈皮贮藏1~15年间,随着陈皮贮藏时间延长,陈皮挥发性成分的种类越来越丰富,为陈皮“陈久者良”的说法提供更加全面的理论依据。 展开更多
关键词 陈皮 顶空固相微萃取法(HS-SPME) 气相色谱—质谱联用(gc-MS) 挥发性成分分析
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SPME-GC-MS与电子鼻结合分析不同酵母混菌发酵猕猴桃酒的挥发性香气物质 被引量:20
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作者 王铁儒 郭丽 +3 位作者 马曼 王冰宜 魏新元 樊明涛 《食品工业科技》 CAS 北大核心 2021年第16期119-128,共10页
采用固相微萃取-气相色谱-质谱联用(Solid Phase Microextraction-Gas Chromatography-Mass Spectrometry,SPME-GC-MS)及电子鼻技术,结合感官评定,分析三株不同非酿酒酵母(戴尔有孢圆酵母Torulaspora delbrueckii、耐热克鲁维酵母Kluyve... 采用固相微萃取-气相色谱-质谱联用(Solid Phase Microextraction-Gas Chromatography-Mass Spectrometry,SPME-GC-MS)及电子鼻技术,结合感官评定,分析三株不同非酿酒酵母(戴尔有孢圆酵母Torulaspora delbrueckii、耐热克鲁维酵母Kluyveromyces thermotolerans、发酵毕赤酵母Pichia fermentans)与酿酒酵母(Saccharomyces cerevisiae)混合发酵对猕猴桃酒挥发性成分的影响。结果表明,相比于酿酒酵母单菌发酵,非酿酒酵母单菌发酵及其与酿酒酵母的混菌发酵均提高了猕猴桃酒中挥发性香气物质的种类;T.delbrueckii混菌发酵酒的苯乙基类化合物、乙酸酯含量高,提高了花香和果香等香气感官品质;K.thermotolerans混菌发酵显著提升了猕猴桃酒高级醇和C_(6)化合物的含量,提高了果香;P.fermentans发酵酒的短链脂肪酸乙酯、萜烯类、呋喃类含量高,增强了果香、脂肪香等感官香气特征。因此,不同非酿酒酵母结合酿酒酵母混菌发酵明显增强了酒中挥发性香气品质,且对香气特性影响不同。此外,利用GC-MS和电子鼻技术结合主成分分析,可成功区分不同酵母混合发酵的猕猴桃酒。偏最小二乘分析表明,电子鼻可预测猕猴桃酒挥发性成分,特别是酯类。本研究为非酿酒酵母在果酒中的应用、猕猴桃酒挥发性香气的改善和多变量分析提供了理论依据。 展开更多
关键词 非酿酒酵母 混菌发酵 猕猴桃酒 香气物质 气相色谱-质谱(gc-MS) 电子鼻
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福建姜黄挥发油化学成分的HS-SPME-GC-MS分析 被引量:16
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作者 强悦越 韦航 +4 位作者 方灵 吴妙鸿 谭索 曾绍校 傅建炜 《中国食品添加剂》 CAS 2020年第1期147-153,共7页
采用水蒸气蒸馏法提取福建姜黄挥发油,应用顶空固相微萃取进样结合气相色谱-串联质谱联用技术(HS-SPME-GC-MS)分析姜黄挥发油的化学成分。结果表明:姜黄挥发油含有量为7.2%(mL/g),从姜黄挥发油中共分出62个色谱峰,初步鉴定出了其中的51... 采用水蒸气蒸馏法提取福建姜黄挥发油,应用顶空固相微萃取进样结合气相色谱-串联质谱联用技术(HS-SPME-GC-MS)分析姜黄挥发油的化学成分。结果表明:姜黄挥发油含有量为7.2%(mL/g),从姜黄挥发油中共分出62个色谱峰,初步鉴定出了其中的51种化学成分,占总挥发油总量的98.41%。在鉴定的化合物中,主要为单萜类化合物和倍半萜类化合物,其中新发现一种主要成分为β-柏木烯,相对含量占比高达26.58%,这可作为福建姜黄挥发油的特征成分和主要品质指标。本研究结果将为福建姜黄植物药材的品质评价提供科学依据。 展开更多
关键词 姜黄挥发油 顶空固相微萃取技术(Head space solid phase micro-extraction HS-SPME) 气相色谱-质谱联用技术(gas chromatography-mass spectrometry gc-MS) 化学成分
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在线光电离质谱结合GC/MS研究阻燃型聚氨酯的热解
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作者 李鑫 王毓 +4 位作者 邢利利 周忠岳 杨玖重 齐飞 潘洋 《质谱学报》 EI CAS CSCD 北大核心 2016年第2期97-105,共9页
本工作利用热重(TG)、气相色谱-质谱(GC/MS)以及在线光电离质谱法对聚氨酯硬泡(RPUF)和添加了阻燃剂聚磷酸铵(APP)与可膨胀石墨(EG)的RPUF的热解过程进行了研究。热重分析结果显示,3种材料的热降解过程均可分为两个阶段。GC/MS对3种材... 本工作利用热重(TG)、气相色谱-质谱(GC/MS)以及在线光电离质谱法对聚氨酯硬泡(RPUF)和添加了阻燃剂聚磷酸铵(APP)与可膨胀石墨(EG)的RPUF的热解过程进行了研究。热重分析结果显示,3种材料的热降解过程均可分为两个阶段。GC/MS对3种材料热解产物的检测结果表明,APP的加入促使大量含氮多环芳烃生成,这些多环芳烃加速了高温下RPUF表面焦炭层的形成,有助于提高阻燃效果;而EG对于RPUF热解产物没有明显影响,说明EG是一种典型的物理膨胀型阻燃剂。在线光电离质谱的实验结果进一步验证了上述结论,并得出RPUF、RPUF/APP、RPUF/EG热解过程的两个阶段分别来自聚氨酯的初始热分解以及初始热解产物的二次分解。 展开更多
关键词 聚氨酯 热解 热重(TG) 气相色谱-质谱(gc/ms) 光电离质谱 在线
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Rapid determination of volatile constituents in safflower from Xinjiang and Henan by ultrasonic-assisted solvent extraction and GC-MS 被引量:3
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作者 Ling-Han Jia Yi Liu Yu-Zhen Li 《Journal of Pharmaceutical Analysis》 SCIE CAS 2011年第3期213-218,共6页
The total volatile components were extracted from safflower by ultrasonic-assisted solvent extraction (USE) and their chemical constituents were analyzed by gas chromatographymass spectrometry (GC-MS) to provide s... The total volatile components were extracted from safflower by ultrasonic-assisted solvent extraction (USE) and their chemical constituents were analyzed by gas chromatographymass spectrometry (GC-MS) to provide scientific basis for the quality control of safflower. Five different solvents (diethyl ether, ethanol, ethyl acetate, dichloromethane and acetone) were used and compared in terms of number of volatile components extracted and the peak areas of these components in TIC. The results showed that USE could be used as an efficient and rapid method for extracting the volatile components from safflower. It also could be found that the number of components in the TIC of ethyl acetate extract was more than that in the TIC of other solvent ones. Meanwhile, the volatile components of safflower from Xinjiang Autonomous Region and Henan Province of China were different in chemical components and relative contents. It could be concluded that both the extraction solvents and geographical origin of safflower are responsible for these differences. The experimental results also indicated that USE/GC-MS is a simple, rapid and effective method to analyze the volatile oil components of safflower. 展开更多
关键词 SAFFLOWER Ultrasonic solvent extraction gas chromatographymass spectrometry (gc-MS)
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Identification and Characterization of Sulfur Compounds in Straight-Run Diesel Using Comprehensive Two-Dimensional GC Coupled with TOF MS 被引量:10
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作者 Niu Luna Liu Zelong Tian Songbai 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2014年第3期10-18,共9页
The solid-phase extraction using Pd-Al2O3 as the stationary phase was employed to pre-separate the sulfur compounds in straight-run diesel. The isolating effect was evaluated quantitatively by gas chromatography with ... The solid-phase extraction using Pd-Al2O3 as the stationary phase was employed to pre-separate the sulfur compounds in straight-run diesel. The isolating effect was evaluated quantitatively by gas chromatography with a sulfur chemiluminescence detector to harvest a satisfactory result. The identification of the structure of sulfur compounds by comprehensive two-dimensional gas chromatography coupled with the time-of-flight mass spectrometry indicated that cyclo-sulfides, benzothiophenes, dibenzothiophenes, dihydro-benzothiophenes and tetrahydro-dibenzothiophenes were included in straightrun diesel obtained from the Arab medium crude(AM). A total of 259 individual compounds were detected and their molecular structures were identified. The analytical method was approved as an effective way to characterize the composition of sulfur compounds, which reduced the interference of other compounds, facilitated the data presentation and provided more detailed information about molecular composition of sulfur compounds. 展开更多
关键词 sulfur compounds straight-run diesel solid-phase extraction (SPE) comprehensive two-dimensional gas chromatographycoupled with the time-of-flight mass spectrometry (gc×gc-TOF MS)
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A GC×GC-ToFMS Investigation of the Unresolved Complex Mixture and Associated Biomarkers in Biodegraded Petroleum 被引量:4
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作者 WANG Guangli Bernd Rolf Tatsuo SIMONEIT +3 位作者 SHI Shengbao WANG Tieguan ZHONG Ningning WANG Peirong 《Acta Geologica Sinica(English Edition)》 CAS CSCD 2018年第5期1959-1972,共14页
Heavy biodegraded crude oils have larger numbers of coeluting compounds than nonbiodegraded oils, and they are typically not resolved with conventional gas chromatography(GC). This unresolved complex mixture(UCM) ... Heavy biodegraded crude oils have larger numbers of coeluting compounds than nonbiodegraded oils, and they are typically not resolved with conventional gas chromatography(GC). This unresolved complex mixture(UCM) has been investigated using comprehensive two-dimensional gas chromatography–time-of-flight mass spectrometry(GC×GC-To FMS) within a set of biodegraded petroleums derived from distinct sedimentary basins, including northwestern Sichuan(Neoproterozoic, marine), Tarim(Early Paleozoic, marine), Bohai Bay(Eocene, saline/brackish) and Pearl River Mouth(Eocene, freshwater). In general, the hydrocarbons that constitute the UCM in petroleum saturate fractions can be classified into three catalogues based on the distributions of resolved compounds on two dimensional chromatograms. Group 1 is composed mainly of normal and branched alkanes, isoprenoid alkanes and monocyclic alkanes; Group 2 comprises primarily terpanes ranging from two to five rings, and Group 3 is dominated by monoaromatic hydrocarbons such as tetralins and monoaromatic steranes. In addition, the UCM is source dependent and varies between oil populations. i.e., the UCM of petroleum derived from Precambrian and Early Paleozoic marine, Eocene saline/brackish and freshwater source rocks is specifically rich in higher homologues of A-norsteranes, series of 1,1,3-trimethyl-2-alkylcyclohexanes(carotenoid-derived alkanes), and tetralin and indane compounds, respectively. 展开更多
关键词 unresolved complex mixture(UCM) biomarker source biodegradation comprehensive two-dimensional gas chromatography–time-of-flight mass spectrometry(gc×gc-ToFMS)
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Evaluation of Pesticide Residues in Mango by a Multi-residue Analysis and GC/MS Triple Quadrupole 被引量:2
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作者 Claudia Helena Pastor Ciscato Kumi Shiota Ozawa +1 位作者 Claudia Maria Barbosa Amir Bertoni Gebara 《Journal of Agricultural Science and Technology(B)》 2015年第8期530-536,共7页
Mango fruit has a great national and international market, and Brazilian production is 1,900 thousand tons/year exporting to North America and Europe. However, the loss could occur during the production when it is aff... Mango fruit has a great national and international market, and Brazilian production is 1,900 thousand tons/year exporting to North America and Europe. However, the loss could occur during the production when it is affected by pests and climate conditions, so the increased use of chemical substances and their presence should be monitored. A task for governmental agencies, producers and food sales, attending the sanitary barriers requirements, is to distribute food free from contaminants, so laboratories involved in this type of work usually employ multi-residues analysis. The objective of this study was to evaluate the presence of pesticide residues in mango using QuEChERS method and mass spectrometry technique. Positive samples were compared with Brazilian maximum residues level (MRL) and the health risk exposure was evaluated using the acute dietary intake (ADI) parameter. A total of 20 samples were collected from January to March, in Sao Paulo city markets. The recoveries were in the range of 70% to 120%, and standard deviation was below 20%. The category of pesticides not permitted for the crop were found in l0 samples; eight samples presented pesticides below MRL and two samples above MRL for the fungicide procloraz. The ADI values were below 20% of ADI for an adult and the worst case was dimethoate with 69% of ADI for children. The time spent in monitoring studies and the viability of method chosen must be considered by pesticide residues laboratories during routine analysis of food quality control. 展开更多
关键词 ADI risk exposure MANGO MONITORING MULTI-RESIDUE QUECHERS gas chromatography-mass spectrometry gc/ms).
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Analysis of residual crosslinking agent content in UV cross-linked poly(ethylene oxide) hydrogels for dermatological application by gas chromatography 被引量:1
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作者 Rachel Shet Hui Wong Mark Ashton Kalliopi Dodou 《Journal of Pharmaceutical Analysis》 SCIE CAS 2016年第5期307-312,共6页
Acrylates have been widely used in the synthesis of pharmaceutical polymers. The quantitation of residual acrylate monomers is vital as they are strong irritants and allergens, but after polymerization, are relatively... Acrylates have been widely used in the synthesis of pharmaceutical polymers. The quantitation of residual acrylate monomers is vital as they are strong irritants and allergens, but after polymerization, are relatively inert, causing no irritation and allergies. Poly(ethylene oxide)(PEO) hydrogels were prepared using pentaerythritol tetra-acrylate(PETRA) as UV crosslinking agent. A simple, accurate, and robust quantitation method was developed based on gas chromatographic techniques(GC), which is suitable for routine analysis of residual PETRA monomers in these hydrogels. Unreacted PETRA was initially identified using gas chromatography–mass spectrometry(GC–MS). The quantitation of analyte was performed and validated using gas chromatography equipped with a flame ionization detector(GC–FID). A linear relationship was obtained over the range of 0.0002%–0.0450%(m/m) with a correlation coefficient(r2)greater than 0.99. The recovery( 4 90%), intra-day precision(%RSD o 0.67), inter-day precision(%RSD o2.5%), and robustness(%RSD o1.62%) of the method were within the acceptable values. The limit of detection(LOD) and limit of quantitation(LOQ) were 0.0001%(m/m) and 0.0002%(m/m), respectively.This assay provides a simple and quick way of screening for residual acrylate monomer in hydrogels. 展开更多
关键词 Poly(ethylene oxide) (PEO) RESIDUAL MONOMER Hydrogelgas chromatography–mass spectrometry (gc–MS) gas chromatography–flame ionization detection (gc–FID)
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Determining organic compounds in coking wastewater by SPME-GC /MS 被引量:1
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作者 SONG Guoxin ZHU Chunyan +1 位作者 XIA Jianzhong HOU Wenjie 《Baosteel Technical Research》 CAS 2013年第1期34-38,共5页
The solid-phase microextraction (SPME) combined with gas chromatography/mass spectrometry (GC/MS) was used to determine and analyze organic pollutants in coking wastewater. Based on the fact that the main compound... The solid-phase microextraction (SPME) combined with gas chromatography/mass spectrometry (GC/MS) was used to determine and analyze organic pollutants in coking wastewater. Based on the fact that the main compounds in the wastewater were organics, some key parameters of the SPME were optimized. The method has good linearity ( its correlation coefficients 〉 0.99) in the range determined,its relative standard deviations (RSD) are less than 15%, and its recovery is from 87.9% to 128.1% with the lowest quantification limit of 5 ~g/L. This method has been used to measure 15 organic pollutants in wastewater from a certain coking plant. The results show that compared with the conventional method,it can save an hour in pretreatment time. It is a fast, low-cost, accurate, simple and efficient analytical method indeed. 展开更多
关键词 solid-phase microextraction (SPME) gas chromatography/mass spectrometry gc/ms) cokingwastewater organic pollutants
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Analysis on Volatile Components of Flowers and Leaves of Thymus mongolicus by SPME-GC/MS 被引量:1
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作者 Shuqin SONG Mao GU Feipeng CHEN 《Medicinal Plant》 CAS 2018年第2期8-10,共3页
[Objectives] To analyze volatile components of flowers and leaves of Thymus mongolicus. [Methods]Volatile components of collected T. mongolicus flower and leaves were separated by headspace solid-phase microextraction... [Objectives] To analyze volatile components of flowers and leaves of Thymus mongolicus. [Methods]Volatile components of collected T. mongolicus flower and leaves were separated by headspace solid-phase microextraction( SPME) and identified by gas chromatography/mass spectrometry( GC/MS) and normallized by peak area. [Results] A total of 24 and 14 compounds were identified from flowers and leaves of T. mongolicus in the total ion chromatogram,accounting for 99. 573% and 97. 187% of the total peak area,respectively. Main components of flowers and leaves of T. mongolicus include phenols and terpenes,and thymol accounts for 35. 38% and 49. 13% of flowers and leaves of T. mongolicus,respectively. [Conclusions] SPME-GC/MS can be applied in analyzing volatile components of flowers and leaves of T. mongolicus,to provide basis for further development and utilization of T. mongolicus. 展开更多
关键词 Solid-phase microextraction(SPME) gas chromatography/mass spectrometry(gc/ms) Volatile components Thymus mongolicus
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HS-SPME-GC/MS分析蝙蝠蛾拟青霉发酵菌粉的挥发性成分 被引量:3
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作者 王英燕 陆震鸣 《药学研究》 CAS 2014年第5期264-266,共3页
目的对蝙蝠蛾拟青霉发酵菌粉的挥发性成分进行分析。方法采用顶空固相微萃取与气相色谱质谱法(HS-SPME-GC/MS)分析蝙蝠蛾拟青霉发酵菌粉中挥发性物质的成分。结果共鉴定出48种化学成分,其中吡嗪类和醛类化合物相对含量最高,占总量的46.7... 目的对蝙蝠蛾拟青霉发酵菌粉的挥发性成分进行分析。方法采用顶空固相微萃取与气相色谱质谱法(HS-SPME-GC/MS)分析蝙蝠蛾拟青霉发酵菌粉中挥发性物质的成分。结果共鉴定出48种化学成分,其中吡嗪类和醛类化合物相对含量最高,占总量的46.7%和44.4%。蝙蝠蛾拟青霉发酵菌粉的主要挥发性物质为2-甲基丁醛(29.41%)、3-乙基-2,5-二甲基吡嗪(9.19%)、异丁醛(6.57%)、2,5-二甲基吡嗪(5.96%)、2-乙基-6-甲基吡嗪(5.35%)、2-乙基-5-甲基吡嗪(4.35%)和2-乙基3-甲基吡嗪(4.08%)。结论 HSSPME-GC/MS技术可以作为分析蝙蝠蛾拟青霉发酵菌粉挥发性成分分析的有效方法。 展开更多
关键词 蝙蝠蛾拟青霉 挥发性成分 固相微萃取 气相色谱质谱法
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10种特级酱油香气差异分析 被引量:1
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作者 史伊格 蒲丹丹 +3 位作者 勇倩倩 黄实宽 陈洪卫 张玉玉 《食品工业科技》 CAS 北大核心 2024年第4期250-260,共11页
研究不同酱油的香气差异有利于从原料和酿造工艺角度加强其风味品质控制和质量提升。采用固相微萃取和固相萃取与气相色谱-质谱联用法对10种特级酱油(CB、HT1、HT2、LH、LJJ1、LJJ2、QH、XH1、XH2、WZ)中的挥发性香气成分进行定性和定... 研究不同酱油的香气差异有利于从原料和酿造工艺角度加强其风味品质控制和质量提升。采用固相微萃取和固相萃取与气相色谱-质谱联用法对10种特级酱油(CB、HT1、HT2、LH、LJJ1、LJJ2、QH、XH1、XH2、WZ)中的挥发性香气成分进行定性和定量分析,结合感官评价、香气活性值(Odor activity value,OAV)和偏最小二乘回归分析(Partial least squares regression,PLSR)进一步分析不同特级酱油的香气差异及其贡献。结果表明,在10种特级酱油中共检测到86种香气化合物,其中44种化合物在10种酱油中共有。共30种香气物质的OAV≥1,其中5-乙基-4-羟基-2-甲基-3(2H)-呋喃酮的OAV(373~4698)值最高,其次为4-甲氧基-2,5-二甲基-3(2H)-呋喃酮(0~1473)。WZ酱油的烟熏香较强,其酚类和酮类化合物种类最多。CB酱油整体香气强度最小,乙醇(25.775μg/L)远低于其余9种酱油;但其吡嗪类物质含量最高(182.796μg/L),其中2,6-二甲基吡嗪含量为66.256μg/L。XH1酱油的酱香与醇香较为强烈,其乙醇(147.257μg/L)含量最高,酚类物含量同样较高,其中4-乙基-2-甲氧基苯酚为18240.479μg/L。XH2酱油的麦芽香强烈。LH酱油的异丁醇(51.223μg/L)和2,3-丁二醇(57921.798μg/L)含量在所检测样品中均为最高。HT1酱油中1-辛烯-3-醇(61.219μg/L)含量最高。综合OAV与PLSR分析,乙酸乙酯、3-羟基-2-丁酮、2,3-丁二醇、3-乙基-2,5-二甲基吡嗪、4-甲氧基-2,5-二甲基-3(2H)-呋喃酮、4-乙基愈创木酚和4-乙基苯酚为10种特级酱油香气差异的关键成分。 展开更多
关键词 特级酱油 固相微萃取 固相萃取 气相色谱-质谱联用 香气活性化合物
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苏尼特羊不同部位肌肉挥发性风味成分和脂肪酸分析 被引量:65
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作者 罗玉龙 赵丽华 +5 位作者 王柏辉 刘畅 张亚琨 杨帆 岳建平 靳烨 《食品科学》 EI CAS CSCD 北大核心 2017年第4期165-169,共5页
以12月龄苏尼特羊不同部位的肌肉为实验材料,取股二头肌、背最长肌、臂三头肌3个部位肌肉进行挥发性成分和脂肪酸的测定。采用顶空固相微萃取-气相色谱-质谱联用技术分析苏尼特羊肌肉中的挥发性成分。结果表明:3个部位羊肉的挥发性风味... 以12月龄苏尼特羊不同部位的肌肉为实验材料,取股二头肌、背最长肌、臂三头肌3个部位肌肉进行挥发性成分和脂肪酸的测定。采用顶空固相微萃取-气相色谱-质谱联用技术分析苏尼特羊肌肉中的挥发性成分。结果表明:3个部位羊肉的挥发性风味成分共鉴定出44种,包括醛类17种、醇类11种、酮类3种、酸类3种、烃类6种、其他化合物4种,通过比较3个不同部位羊肉的挥发性风味成分,筛选影响风味的物质为醛类和醇类,主要风味化合物为己醛、壬醛、1-辛烯-3-醇和2,3-辛二酮,背最长肌中的醛类和醇类含量高于臂三头肌和股二头肌;苏尼特羊3个部位的饱和脂肪酸与多不饱和脂肪酸含量差异不大,但背最长肌单不饱和脂肪酸的含量要高于股二头肌与臂三头肌,肌肉中的不饱和脂肪酸含量丰富,能对羊肉风味的产生有重要作用。 展开更多
关键词 苏尼特羊 挥发性物质 脂肪酸 固相微萃取 气相色谱-质谱联用
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3种香型凤凰单丛茶挥发性成分分析 被引量:28
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作者 肖凌 毛世红 童华荣 《食品科学》 EI CAS CSCD 北大核心 2018年第20期233-239,共7页
采用溶剂辅助风味蒸发法提取玉兰香、蜜兰香和桂花香3种香型凤凰单丛茶的挥发性成分,运用气相色谱-质谱(gas chromatography-mass spectrometry,GC-MS)联用技术结合气相色谱-嗅辨(gas chromatographyolfactometry,GC-O)技术分析其香气... 采用溶剂辅助风味蒸发法提取玉兰香、蜜兰香和桂花香3种香型凤凰单丛茶的挥发性成分,运用气相色谱-质谱(gas chromatography-mass spectrometry,GC-MS)联用技术结合气相色谱-嗅辨(gas chromatographyolfactometry,GC-O)技术分析其香气组分。通过GC-MS在3种单丛茶中共检测出91种挥发性成分,共有成分38种,各茶样均以醇类、酮类和碳氢化合物为主,但各香型间仍有明显差异。通过GC-O分析共嗅闻出31种活性香气成分,鉴定出30种,其主要香气类型表现为花香、甜香、清香、果香。芳樟醇氧化物I、橙花醇、芳樟醇氧化物II和橙花叔醇4种成分在3种单丛茶中相对含量丰富,嗅闻强度值高,且呈现出愉快的花香、花香甜香、花香蜜香、清香果香的香气特征,对凤凰单丛茶香气品质形成有重要作用。 展开更多
关键词 凤凰单丛茶 挥发性成分 溶剂辅助风味蒸发 气相色谱-质谱法 气相色谱-嗅辨仪
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