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中国精品科技期刊2020

顶空固相微萃取-全二维气相色谱/飞行时间质谱测定三种芒果香气成分

黄豆, 曹烙文, 岑延相, 区梓峰, 胡韩, 谭国斌, 麦泽彬, 黄正旭, 李雪, 吴曼曼

黄豆,曹烙文,岑延相,等. 顶空固相微萃取-全二维气相色谱/飞行时间质谱测定三种芒果香气成分[J]. 食品工业科技,2021,42(15):218−226. doi: 10.13386/j.issn1002-0306.2020070275.
引用本文: 黄豆,曹烙文,岑延相,等. 顶空固相微萃取-全二维气相色谱/飞行时间质谱测定三种芒果香气成分[J]. 食品工业科技,2021,42(15):218−226. doi: 10.13386/j.issn1002-0306.2020070275.
HUANG Dou, CAO Luowen, CEN Yanxiang, et al. Detection of Aroma Components in Three Cultivars of Mango with Headspace Solid Phase Microextraction-Comprehensive Two-dimensional Gas Chromatograph/Time of Flight Mass Spectrometer[J]. Science and Technology of Food Industry, 2021, 42(15): 218−226. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2020070275.
Citation: HUANG Dou, CAO Luowen, CEN Yanxiang, et al. Detection of Aroma Components in Three Cultivars of Mango with Headspace Solid Phase Microextraction-Comprehensive Two-dimensional Gas Chromatograph/Time of Flight Mass Spectrometer[J]. Science and Technology of Food Industry, 2021, 42(15): 218−226. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2020070275.

顶空固相微萃取-全二维气相色谱/飞行时间质谱测定三种芒果香气成分

基金项目: 2017年国家重点研发计划(2017YFB1103903);广东省协同创新与平台环境建设(2019B121205004);2019年度广东省国际科技合作项目国际合作项目(2018A050506020)。
详细信息
    作者简介:

    黄豆(1994−),男,本科,助理工程师,研究方向:全二维气相色谱-飞行时间质谱仪应用方法开发,E-mail: huangdou1224@163.com

    通讯作者:

    吴曼曼(1989−),女,硕士,中级工程师,研究方向:从事飞行时间质谱仪的研发和应用,Email:mm.wu@hxmass.com

  • 中图分类号: TS207.3

Detection of Aroma Components in Three Cultivars of Mango with Headspace Solid Phase Microextraction-Comprehensive Two-dimensional Gas Chromatograph/Time of Flight Mass Spectrometer

  • 摘要: 本文采用顶空固相微萃取(Headspace Solid Phase Microextraction,HS-SPME)与全二维气相色谱/飞行时间质谱联用仪(Comprehensive Two-dimensional Gas Chromatograph/Time of Flight Mass Spectrometer,GC×GC-TOFMS)比较了不同萃取头、萃取温度、萃取时间、解吸温度等因素对萃取效果的影响,对三个品种的芒果香气成分进行了分析鉴定。结果表明,最适萃取条件为:萃取头50/30 μm DVB/CAR /PDMS(Divinylbenzene/Carboxen/Polydimethylsiloxane),萃取温度60 ℃,萃取时间60 min,解吸温度250 ℃。凭借全二维气相色谱/飞行时间质谱联用仪强大的分离及定性能力,可以获得比常规一维气相色谱/质谱联用仪更多的香气成分信息。3种芒果共检测出170种香气成分,金煌芒、小台芒、青皮芒中分别测到96、90、68种香气成分,峰面积含量占各自挥发性成分总量的74.04%、90.75%、78.91%。170种香气成分中醇类25种、芳香烃4种、醛类15种、酸类6种、酮类18种、烯烃56种、酯类46种,7类化合物中烯烃类化合物在三种芒果中含量占比最高,金煌芒中含有相比其他两种芒果具有更多的酯类、醛类和醇类等香气成分,相应的青皮芒独有的香味成分则相对较少,这也是金煌芒香气浓郁,而青皮芒香气较寡淡的原因。3种芒果共有的香气成分有26种,比如萜品油烯、3-蒈烯、β-月桂烯、石竹烯、珂巴烯和γ-依兰油烯等烯烃组成芒果基本的香气,但共有成分在不同品种芒果中的含量存在明显差异。比如,金煌芒中3-蒈烯明显更高,含量为10.783%,小台芒中萜品油烯明显更高,含量为17.545%。
    Abstract: A headspace solid-phase microextraction coupled with comprehensive two-dimensional gas chromatography time-of-flight mass spectrometer was used to compare different extraction heads, extraction temperature, extraction time, desorption temperature and time on the extraction effect, aroma components of the three mango varieties were analyzed and identified. The results showed that the optimum extraction conditions were as follows: extraction head 50/30 μm DVB/CAR/PDMS, extraction temperature 60 ℃, extraction time 60 min and desorption temperature 250 ℃. With the powerful separation and qualitative capabilities of the comprehensive two-dimensional gas chromatography time-of-flight mass spectrometer, more information about aroma components c be obtained than the conventional one-dimensional gas chromatography mass spectrometer. A total of 170 aroma components were detected in the three types of mangoes. A total of 96, 90 and 68 aroma components were detected in the JinHuang mango, XiaoTai mango and QingPi mango, respectively, and the peak area content of these aroma components accounted for 74.04%, 90.75% and 78.91% of the total volatile components, respectively. In the 170 aroma components, 25 were alcohols, 4 were aromatic hydrocarbons, 15 were aldehydes, 6 were acids, 18 were ketones, 56 were olefins, 46 were esters. Among the 7 kinds of compounds, olefins were found in three kinds of mangoes. The highest content in the golden mango, JinHuang mango contained more esters, aldehydes and alcohols than the other two mangoes, and the corresponding unique aroma components of the QingPi mango were relatively less, which was also golden. This was also the reason why the aroma of JinHuang mango was full-bodied while the aroma of QingPi mango was relatively less aromatic.There were 26 types of aroma components shared by the three types of mangoes, such as terpene olefins, 3-carene, β-laurelene, stigmene, cobalene and γ-ylangene which made up the basic aroma of mangoes, but the contents of common components in different varieties of mango were significantly different. For example, the content of 3-carene in JinHuang mango was significantly higher with 10.783%, and the content of terpinene in XiaoTai mango was significantly higher with 17.545%.
  • 芒果(Mango)被称为“热带水果之王”,是杧果的通俗名,属漆树科(Anacardiaceae)杧果属(Mangifera)。芒果原产于印度的常绿大乔木,地理上主要分布在印度、孟加拉、中南半岛、马来西亚和中国(云南、广西、广东、福建、海南以及台湾)[1]。在我国,芒果的栽培面积是仅次于荔枝、龙眼及香蕉,排名第四的重要热带水果[2]。芒果富含大量维生素A,可抗癌、美化皮肤、防止高血压和动脉硬化、防止便秘、杀菌[3]等。

    近年来,食品香味成分的研究引起了人们的广泛关注。果实的香气成分种类和含量是芒果的主要品质特性之一,是芒果风味与商品价值的一个重要参考指标[4-5]。刘传和等[6]利用顶空固相微萃取(Headspace Solid Phase Microextraction, HS-SPME)结合气相色谱-质谱法(Gas Chromatograph/Mass Spectrometer,GC-MS),对凯特芒、象牙芒、台农一号、四季芒四种芒果的果肉香气成分进行分析,四种芒果的果实共测到20种香气物质,萜烯是最主要的香气成分。张浩等[7]应用电子舌与SPME/GC-MS技术检测出金芒、青芒、红玉和贵妃四种芒果含有萜烯类、酯类与醛类等7大类挥发性有机物,并进行PCA(主成分分析法)分析确定了用于区分四种芒果的特征挥发性有机物。以上均采用HS-SPME结合GC-MS进行研究,受限于常规GC-MS的分离能力,检出的香气成分较少。全二维气相色谱(Comprehensive Two-dimensional Gas ChromatoGraph,GC×GC)技术是上世纪末逐渐发展起来的一种高效分离检测技术,与常规GC技术相比,具有高峰容量、高分辨率、高灵敏度、族分离等特点[8-9],对复杂样品的全组分分离具有极强的优势。而飞行时间质谱仪(Time of Flight Mass Spectrometer, TOFMS)每秒能产生大于100张的全谱图,在高速采集的同时完整的保留质谱数据,是全二维色谱的最理想检测器[10-12],因而全二维气相色谱结合具有高速采集功能的飞行时间质谱仪非常适用于石油[13-15],风味[16-17]及环境[18-20]等复杂样品的分析。

    目前国内外学者较多采用常规GC-MS对芒果中香气成分进行研究,尚未见到GC×GC-TOFMS用于研究芒果香气成分的相关报道。本文采用全自动HS-SPME结合GC×GC-TOFMS,对市面上常见芒果品种金煌芒、小台芒和青皮芒的香气成分进行了定性及对比分析,确定不同芒果品种在香气成分上的差异,旨在为芒果等果蔬类植物风味物质的精细分析开拓新方向。

    金煌芒、小台芒和青皮芒 选取市面上大小均一、果实成熟完全、完整新鲜的芒果,购自永辉超市,数量若干,洗净去皮备用。

    GGT 0620型全二维气相色谱-飞行时间质谱联用仪 广州禾信仪器股份有限公司;瑞士CTC全自动多功能在线前处理进样平台 广州智达实验室科技有限公司;769S型搅拌机 余姚市海蒂诗家用电器有限公司。

    将3种芒果果肉分别置于搅拌机捣碎,并称取5 g果肉于20 mL固相微萃取样品瓶中。

    萃取前老化温度为260 ℃,老化时间为15 min,振摇速度为350 r/min,萃取温度为60 ℃,萃取时间为60 min,进样深度为35 mm,解析温度为250 ℃。

    进样口温度250 ℃;分流进样,分流比为5:1;一维色谱柱MEGA-WAX Plus(30 m×0.25 mm×0.25 μm),二维色谱柱DB-17MS(1.3 m×0.18 mm×0.18 μm);载气为氦气,柱流量为1 mL/min;柱箱温度采用程序升温,起始温度为35 ℃,保持3 min,以5 ℃/min升温到240 ℃,保持5 min,共49 min。

    采用固态热调制器,选择HV调制柱(1.2 m×0.25 mm),调制周期为5 s,其中解析时间为1 s;调制器进口和出口同步GC升温程序,进口始终比柱箱高30 ℃,出口始终比柱箱高120 ℃,冷阱保持−50 ℃。

    电子轰击离子源(Electron Impact Ion Source,EI),灯丝发射电流100 μA,电离能70 eV;离子源温度为230 ℃,传输线温度为280 ℃;检测器电压为−1900 V;采集质量范围为40~500 u,采集速度为100谱/s。

    采用全二维数据处理工作站软件Canvas载入数据,自动绘制全二维TIC轮廓图,并对图中信噪比大于3的峰自动识别,标识出的每一个峰点即代表一种化合物,每个化合物由一对保留时间确定,X轴方向为第一维保留时间(min),Y轴方向为第二维保留时间(s)。

    在Canvas软件上通过对每个化合物的质谱图进行NIST17标准质谱数据库比对检索、结合保留指数[21-22](Retention index,RI)等信息,对化合物进行定性分析;同时,软件采用峰面积归一化法自动生成各成分的相对含量。根据各化合物的定性定量信息,统计三种芒果鲜肉样品中的特征香气成分,并根据化合物官能团对香气成分进行分类并统计个数和相对含量。

    以金煌芒为例,实验过程中对比100 μm PDMS(Polydimethylsiloxane)单相萃取头和50/30 μm DVB/CAR/PDMS(Divinylbenzene/Carboxen/Polydimethylsiloxane)三相萃取头,从表1中观察发现后者可萃取到更多的组分,其萃取的峰个数和总峰面积均多于100 μm PDMS萃取头。DVB/CAR/PDMS三相萃取头可以兼顾到极性与非极性各类组分,得到更为全面的分析结果,更适用于含有较多极性化合物组分的风味物质分析,本研究最终选用三相萃取头进行实验。

    表  1  不同萃取头的萃取效果
    Table  1.  Extraction effect of different fiber
    萃取头类型PDMSDVB/CAR/PDMS
    总峰面积795360945479
    检出有效化合物总数(个)88114
    下载: 导出CSV 
    | 显示表格

    选择三相萃取头,实验过程中选择50、60和70 ℃的萃取温度,其余条件不变,依次测试金煌芒。萃取温度对SPME萃取效率的影响具有双面性,观察到较低的萃取温度有利于低沸点组分的萃取,较高的温度下有利于高沸点组分的萃取。根据表2的结果,本研究选择60 ℃的萃取温度,兼顾不同沸点的组分,有利于检测到更多的挥发性组分。

    表  2  不同萃取温度下的萃取效果
    Table  2.  Extraction effect of different extraction temperature
    萃取头温度(℃)506070
    总峰面积902356945479923432
    检出有效化合物总数(个)98114110
    下载: 导出CSV 
    | 显示表格

    选择三相萃取头,实验过程中分别使用50、60和70 min的萃取时间,其余条件不变,依次测试金煌芒。经过实验优化,从表3可知,萃取时间达到60 min后检测到的组分数量及总峰面积不再增加,确保分析物在样品与萃取头上达到分配平衡,同时尽量地缩短分析时间,故选取萃取时间为60 min。

    表  3  不同萃取时间下的萃取效果
    Table  3.  Extraction effect of different extraction time
    萃取头时间(min)506070
    总峰面积894556945479933227
    检出有效化合物总数(个)93114110
    下载: 导出CSV 
    | 显示表格

    选择三相萃取头,实验过程中选择240、250和260 ℃的解吸温度,其余条件不变,依次测试金煌芒。较低的解吸温度不利于高沸点的组分进入色谱,太高的解吸温度会影响萃取头的使用寿命,同时也会带来更多的本底(如带来较多硅氧烷干扰)。通过表4可知,250 ℃的解吸温度时,总峰面积和有效化合物个数最多,故本研究选取250 ℃作为解吸温度。

    表  4  不同解吸温度下的萃取效果
    Table  4.  Extraction effect of different desorption temperature
    解吸温度(℃)240250260
    总峰面积927956945479944678
    检出有效化合物总数(个)101114110
    下载: 导出CSV 
    | 显示表格

    常规的GC-MS在分析复杂的食品风味时,为了达到较好的色谱分离效果,需要采用低升温速率(1~3 ℃/min),或者采用梯度升温方式,最终导致整个分析周期很长(接近1.5 h)。本实验使用的GC×GC-TOFMS可以采用5 ℃/min快速升温让组分快速流出色谱柱,不到50 min即可完成整个采集过程。以某个局部分离效果为例(见图1),原本在保留时间28 min附近存在三个未分开的组分峰,但经过调制器捕集和二维柱再次分离后测得三个完全分离的十四醛(峰序号171)、5-丁基二氢-2(3H)-呋喃酮(峰序号170)和苯乙醇(峰序号172)。以上表明GC×GC-TOFMS测试芒果香气成分相比常规GC-MS具有良好的色谱分离效果。

    图  1  GC×GC和GC分离效果对比图
    Figure  1.  Separation effect comparison of GC×GC and GC

    实验对比了反、正向全二维柱系统测试金煌芒的测试效果,其中反向柱系统一维柱采用强极性的MEGA-WAX Plus(30 m×0.25 mm×0.25 μm),二维柱采用中等极性的DB-17ms(1.3 m×0.18 mm×0.18 μm);正向柱系统一维柱采用非极性的DB-5ms(30 m×0.25 mm×0.25 μm),二维柱采用中等极性的DB-17ms(1.3 m×0.18 mm×0.18 μm)。图2为采用反向和正向柱系统测试金煌芒的二维色谱轮廓图,观察到采用正向柱系统时,极性较强的组分整体分离度差(如保留时间在5、15和27.5 min等区域),而且会出现二维峰拖尾(如多数极性较大的色谱峰存在明显的拖尾)以及峰迂回(极性较强的酸类迂回到下一周期)的情况,会对定性结果产生干扰;而在反向柱系统下,极性组分在一维柱拖尾现象显著减弱,同时极性相近组分分离度得到明显提升,故最终采用了反向柱系统。

    图  2  反向和正向柱系统测试金煌芒的二维色谱轮廓图
    注:a:反向柱系统;b:正向柱系统。
    Figure  2.  Chromatogram of JinHuang mango tested by reverse and forward column systems

    图3分别为3-蒈烯、萜品油烯、邻伞花烃和αα,4-三甲基苯甲醇4种含量较高的香气成分的实验质谱图与NIST 17谱库质谱图的匹配结果图,其中每张图的上部分为实验质谱图,下部分为NIST 17谱库的质谱图。实验结果显示4种化合物的正向匹配度(Forward Match,MF)和反向匹配度(Reverse Forward Match,RMF)均大于900,因此实验仪器定性的结果可靠。

    图  3  四种香气成分的质谱匹配图
    注:a:3-蒈烯;b:萜品油烯;c:邻伞花烃;d:αα,4-三甲基苯甲醇。
    Figure  3.  Mass spectrum matching map of four kinds of aroma components

    图4为金煌芒、小台芒和青皮芒的果实香气成分GC×GC-TOFMS轮廓图。使用Canvas工作站对三种芒果香气成分数据进行了自动峰积分,并使用NIST 17谱库结合保留指数对每个峰进行检索定性。金煌芒共检测到的挥发性组分有114种,其中香气成分96种,香气成分峰面积占比74.04%;小台芒检测到113种挥发性组分,香气成分有90种,峰面积占比90.75%;青皮芒检测到79种挥发性组分,香气成分68种,峰面积占比78.91%,可以看到不同品种芒果的香气组成化合物及其含量存在明显差异。前人研究芒果香气时,大多数采用常规GC-MS分析芒果的香气成分,单个品种的芒果测到的香气组分一般不会超过50种[6-7]。而借助全二维强大的分离能力和高灵敏度,一方面能够测到共流出的组分,另一方面可以测到含量极低的组分,而这些痕量物质对芒果香气的贡献值却较大,需要着重研究。

    图  4  三种芒果的二维色谱轮廓图
    注:a:金煌芒;b:小台芒;c:青皮芒。
    Figure  4.  Chromatogram of three kinds of mangos

    表5可知,在170种香气成分中,三种芒果同时含有的香气成分有26种。三种芒果果实共有的26种香气成分中包含15种烯烃/环烷烃、4种醇类、1种酯类、1种酮类、1种酸类和2种芳香烃类。烯烃中单萜烯及倍半萜烯烃类化合物在三种芒果香气成分构成中都占有较大比率,特别是3-蒈烯(松木香气)及萜品油烯(又叫异松油烯,松木树脂味),两者总量在三种芒果香气成分中占比都超过20%,对形成芒果特有的香气都有重大的贡献,与前人研究的结果相似[6,23-24]。而2-蒈烯(甜香味)、柠檬烯(柠檬果香味)、α-水芹烯(清香味)和β-月桂烯(清淡的香脂香气)则进一步形成芒果特有的香气。三种芒果共有的香气成分有26种,比如萜品油烯、3-蒈烯、β-月桂烯、石竹烯、珂巴烯和γ-依兰油烯等萜烯类组分,组成芒果基本的香气,但共有成分在不同品种芒果中含量存在明显差异,比如金煌芒中3-蒈烯的含量明显更高,达到10.783%,小台芒中萜品油烯含量明显更高,为17.545%。

    表  5  三种芒果的香气成分及相对含量
    Table  5.  Aroma components and relative contents of three kinds of mangos
    序号类别化合物名称 化学式 一维时间(min)二维时间(s)金煌芒(%)小台芒(%)青皮芒(%)
    1醇类乙醇C2H6O4.280.610.7071.0400.088
    2异戊醇C5H12O10.950.830.007
    31-己醇C6H14O14.950.900.010
    43-己烯-1-醇C6H12O15.780.860.3210.0010.003
    5环己基甲醇C7H14O20.452.230.004
    64-萜烯醇C10H18O21.031.600.002
    73-环戊基-1-丙醇C8H16O22.532.630.009
    8顺式-3-壬烯-1-醇C9H18O23.121.080.013
    9α-松油醇C10H18O23.281.320.053
    10(6Z)-壬烯-1-醇C9H18O23.781.060.005
    11对薄荷-1,5-二烯-8-醇C10H1624.031.200.010
    12(E,Z)-3,6-亚壬基-1-醇C9H16O24.531.010.853
    13(E,Z)-3,6-壬二烯-1-醇C9H16O24.621.000.313
    14反式,顺式-2,6-壬二烯-1-醇C9H16O24.950.980.0100.005
    15(E)-2-癸烯-1-醇C10H20O25.782.440.025
    164-丙基-1,6-庚二烯-4-醇C10H18O26.032.430.088
    17异香芹醇C10H16O26.281.290.0630.010
    18αα,4-三甲基苯甲醇C10H14O26.701.040.3840.5510.239
    19醇类苯甲醇C7H8O27.280.730.1260.0600.005
    20苯乙醇C8H10O27.950.840.0060.004
    211-十二醇C12H26O29.031.340.010
    22二-表-1,10-库贝醇C15H26O30.702.280.029
    23蓝桉醇C15H26O33.371.920.217
    24α-杜松醇C15H26O33.871.730.046
    251-十六醇C16H34O36.531.702.366
    26芳香烃类对伞花烃C10H1412.282.652.776
    27邻伞花烃C10H1412.482.691.9830.4403.784
    284-异丙烯基甲苯C10H1216.952.010.042
    29去氢白菖烯C15H2225.953.270.3960.6000.007
    30醛类2-己烯醛C6H10O11.031.490.015
    31苯甲醛C7H6O19.121.180.0480.301
    32(E)-2-壬醛C9H16O19.371.760.1640.013
    33(E,Z)-2,6-壬醛C9H14O20.701.570.194
    34苯乙醛C8H8O22.121.180.156
    35十四醛C14H28O28.032.494.534
    364-甲氧基苯甲醛C8H8O230.121.110.504
    37十五醛C15H30O30.122.510.031
    38(4,6,6-三甲基双环[3.1.1]庚-3-烯-2-基)乙醛C12H18O30.622.510.243
    39(Z)-13-十八碳烯醛C18H34O30.702.420.178
    40十六醛C16H32O32.122.610.444
    41胡椒醛C15H2433.951.021.017
    422-异丙基-5-甲基己基-4-烯醛C10H16O34.370.890.008
    43顺式,顺式,顺式-7,10,13-十六碳三醛C16H26O36.622.180.022
    44香兰素C8H8O339.780.770.3100.006
    45酸类丁酸C4H8O222.370.510.123
    46己酸C6H12O227.030.550.0070.115
    47辛酸C8H16O231.620.560.003
    48壬酸C9H18O233.620.590.055
    49十四烷酸C14H28O241.950.830.2970.0800.007
    50正十六酸C16H32O245.371.030.004
    51酮类2,2,4-三甲基-3-戊酮C8H14O616.030.520.007
    524-羟基-2-戊酮C5H10O217.700.770.001
    533,5-辛二烯-2-酮C8H12O19.121.450.053
    545-乙基二氢-2(3H)-呋喃酮C6H10O223.371.150.007
    554,6,6-三甲基-(1S)-双环[3.1.1] -3-庚烯-2-酮C10H14O24.371.840.148
    561-(4-甲基苯基)-乙酮C9H10O24.871.360.098
    571-(3-甲基苯基)-乙酮C9H10O24.871.360.037
    58(Z)-6,10-二甲基-5,9-十二烯-2-酮C13H22O26.622.080.033
    59(E)-6,10-二甲基-5,9-十一碳二烯-2-酮C13H22O26.702.080.3300.1760.013
    60反式-β-紫罗兰酮C13H20O28.282.140.0480.174
    61四氢-6-丙基-2H-吡喃-2-酮C8H14O228.871.350.238
    62二氢-5-戊基-2(3H)-呋喃酮C9H16O230.201.320.1680.272
    63环辛酮C8H14O31.450.700.004
    645-己基二氢-2(3H)-呋喃酮C10H18O232.281.390.018
    65四氢-6-戊基- 2H-吡喃-2-酮C10H18O233.281.450.0060.010
    66四氢-6-(2-戊烯基)-(Z)-2H-吡喃-2-酮C10H16O234.451.370.071
    675,6,7,7a-四氢-4,4,7a-三甲基-(R)-2(4H)-苯并呋喃酮C11H16O235.701.430.044
    685,6,7,7a-四氢-4,4,7a-三甲基-2(4H)-苯并呋喃酮C11H16O235.781.430.004
    69烯烃/环烷烃α-蒎烯C10H165.623.5610.418
    703,6,6-三甲基 -双环[3.1.1]-2-庚烯C10H165.623.730.030
    711-甲基-2,4-环二烯C7H105.951.720.003
    72莰烯C10H166.623.600.013
    734-甲基-3-(1-甲基亚乙基)-环己烯C10H168.123.970.009
    74烯烃/环烷烃2-蒈烯C10H168.123.970.495
    75β-蒎烯C10H168.123.980.1530.560
    763-蒈烯C10H168.623.6810.7839.5698.905
    77α-水芹烯C10H169.123.510.3661.2971.504
    78β-月桂烯C10H169.283.011.1812.1732.417
    79(+)-2-蒈烯C10H169.533.521.4806.0215.216
    801-甲基-4-(1-甲基乙基)-1,3-环己二烯C10H169.783.320.308
    81柠檬烯C10H1610.123.341.4873.3053.623
    82β-水芹烯C10H1610.373.380.5552.2352.172
    83(Z)-3,7-二甲基-1,3,6-辛二烯C10H1611.372.880.0200.014
    84γ-松油烯C10H1611.533.350.0070.3760.850
    85Β-罗勒烯C10H1611.782.830.2120.140
    86萜品油烯C10H1612.623.1512.85117.54512.975
    874,5-二甲基-2,6-辛二烯C10H1813.122.370.104
    881,3,8-对薄荷三烯C12H22O215.702.550.8891.4901.518
    891,5,8-对薄荷三烯C15H2416.452.650.5421.1501.076
    90E,E-2,6-二甲基-1,3,5,7-辛四烯C10H1416.872.390.183
    912,4-二甲基苯乙烯C10H1216.872.051.6273.7910.590
    92α-毕澄茄烯C15H2417.204.730.356
    933-乙基-1,4-己二烯C8H1417.701.290.108
    94(E,E)-2,4-庚二烯C7H10O17.701.300.0700.134
    95依兰烯C15H2417.874.770.010
    96珂巴烯C15H2418.034.801.2187.7912.587
    97(-)-α-古芸烯C15H2419.035.000.002
    98(E)2,5-二甲基-1,6-辛二烯C10H1819.532.172.5320.726
    99β-珂巴烯C15H2420.454.300.738
    100α-愈创木烯C15H2420.534.310.260
    101β-榄香烯C15H2420.533.492.065
    102石竹烯C15H2420.624.180.1800.608
    103顺式-穆罗拉-3,5-二烯C15H2421.454.231.4892.171 0.759
    1042-亚甲基-5-(1-甲基乙烯基)-8-甲基-
    双环[5.3.0]癸烷
    C15H2421.783.880.0150.131
    105(+)-香橙烯C15H2421.784.230.114
    1061R,3Z,787-9-4,11,11三甲基-8-亚甲基
    双环[7.2.0]-3-十一碳烯
    C15H2421.783.950.0980.4140.708
    107葎草烯C15H2422.283.741.362
    1081,2,3,3a,4,5,6,7-八氢-1,4-二甲基-7-(1-甲基乙烯基)-
    [1R-(1α,3,4α,7β)]-天蓝烯
    C15H2422.454.121.2990.184
    109顺式-β-金合欢烯C15H2422.453.211.543
    110马兜铃烯C15H2422.533.800.010
    111(+)-喇叭烯C15H2422.954.021.629
    1123,7-二甲基-(Z)-2,6-辛二烯C10H16O23.031.330.6730.4870.060
    113大根香叶烯C15H2423.203.670.031
    114异长叶烯C15H2423.373.892.018
    115α-布藜烯C15H2423.373.991.396
    116β-布藜烯C15H2423.373.731.883
    117γ-依兰油烯C15H2423.453.834.575
    118α-依兰烯C15H2423.623.633.3691.9541.396
    119紫苏烯C15H2423.623.682.5910.066
    120毕澄茄烯C15H2424.783.592.3580.448
    121螺环[4.4]-1-壬烯C10H16O25.622.460.1850.408
    122双环[5.2.0]-1-壬烯C9H1425.622.410.199
    123α-白菖考烯C15H2027.702.833.097
    1242-甲基-1-烯-3-壬炔C10H1627.031.230.2070.067
    125酯类乙酸乙酯C4H8O23.451.080.0960.580
    126丙酸乙酯C5H10O24.531.500.039
    127酯类丁酸乙酯C6H12O26.201.960.002
    1282-丁烯酸-(Z)-甲酯C5H8O26.531.441.884
    129环丙基羧酸乙酯C6H10O27.871.830.003
    130丁酸丙酯C7H14O28.282.440.0320.472
    1312-丁烯酸-(Z)-乙酯C6H10O29.451.740.017
    132丁酸丁酯C8H16O210.952.670.0350.008
    133己酸乙酯C8H16O211.452.510.010
    1342-丙烯酸-2-甲基-环氧乙烷基甲酯C7H10O312.531.710.048
    135乙酸己酯C8H16O212.532.230.004
    136(Z)-3-己烯-1-醇乙酯C8H14O213.621.960.014
    137(E)-3-己烯-1-醇乙酯C8H14O213.781.950.002
    138(E)-2-己烯-1-醇乙酯C8H14O214.281.911.2900.617
    139丁酸-(Z)-2-戊烯酯−C9H16O215.122.410.007
    140(Z)-丙酸-3-己烯酯C9H16O215.622.280.014
    141辛酸乙酯C10H20O216.872.680.6180.136
    142顺-3-己烯基丁酯C10H18O217.372.510.463
    143环丙烷羧酸-2-戊酯C9H16O217.452.190.0110.2140.508
    144戊二酸戊酯C7H14O317.453.030.003
    145丁酸-4-己烯-1-酯C10H18O217.532.500.002
    146丁酸-(E)- 2-己烯酯C10H18O217.952.462.306
    147(E)-2-甲基-2-丁烯-1-甲基丙烯酸甲酯C9H14O218.781.960.008
    1482-丁烯酸-2-甲基丙酯C8H14O219.952.280.107
    1491,2-丙二醇-1-乙酸酯C5H10O320.700.690.028
    1502-丁烯酸-3-(E,Z)-己烯酯C10H16O221.032.040.015
    151丁酸辛酯C12H24O221.372.911.5170.937
    1524-甲基丙烯酸戊酯C11H20O221.452.530.004
    1531,2-丙二醇-2-乙酸酯C5H10O321.700.680.002
    154丁内酯C4H6O221.780.950.005
    155癸酸乙酯C12H24O221.872.780.002
    156(E)-六角-3-烯基(E)-2-甲基-2-丁烯酸酯C11H18O222.532.320.805
    1574Z-己烯基苯甲酸酯C11H18O222.532.290.394
    1584Z-己烯酸己烯酯C11H18O222.532.280.012
    159丁酸壬酯C13H26O223.703.021.059
    160丁酸-1-乙烯己酯C12H22O224.282.780.027
    161乙酸-顺式- -3-壬烯酯C11H20O224.282.740.006
    162烟酸乙酯C8H9NO225.781.350.213
    163十二酸乙酯C14H28O226.372.880.035
    164丙位辛内酯C8H14O227.951.280.741
    165丁酸-(E)-3,7-二甲基-2,6-辛二烯基酯C14H24O227.452.630.2390.028
    166三醋酸甘油酯C9H14O631.281.010.592
    1671,2,3-丙三醇-1-乙酸酯C5H10O434.370.660.447
    168三氟-3,7-二甲基辛基乙酸酯C12H21F3O234.781.590.003
    169δ-十二内酯C12H22O237.281.580.002
    170苯甲酸苄酯C14H12O240.531.580.168
    注:“−”为未检出。
    下载: 导出CSV 
    | 显示表格

    将三种芒果中170种香气成分按照官能团分类,芒果香气成分主要由7类化合物构成。烯烃类(含环烷烃)56种、酯类46种、醇类25种、酮类18种、醛类15种、酸类6种、芳香烃4种。三种芒果香气成分中含量最高的均为烯烃类化合物,烯烃类是草香型香气物质;不同的是,金煌芒还含有较多的酯类、醛类及醇类等含氧化合物,酯类是果香型香气物质,对果实浓郁起主要贡献作用[25];对小台芒及青皮芒而言,烯烃类化合物占据极大的比例,而含氧香气化合物明显较金煌芒偏低,另外两者都含有5%以上的芳烃香气(特异芳香味[26])成分。

    对于不同芒果品种中各自独有的成分,其中金煌芒有51种,占金煌芒香气成分含量的30.00%;小台芒有38种,占小台芒香气成分含量的22.35%;青皮芒有25种,占青皮芒香气成分含量的14.71%。金煌芒中丁酸乙酯、反,顺-2,6-壬二烯醛、十四醛、紫罗兰酮、呋喃酮及苯甲酸苄酯等低含量的组分,因其较低的气味阈值,呈现出对整体香气具有突出的贡献作用。可以看出,金煌芒独有的香味成分,比如酯类(果汁香韵及果香香韵)、醛类(清香韵)以及醇类(醇香韵)等含量更多,更加丰富;对应的青皮芒独有的香味成分则相对较少,这也是金煌芒香气浓郁,而青皮芒香气较寡淡的原因。

    采用HS-SPME-GC×GC-TOFMS法在三种芒果品种共检测出170种香气成分,其中金煌芒、小台芒、青皮芒中分别测到96、90、68种香气成分,相对含量占各自总挥发性成分的74.04%、90.75%、78.91%。三种芒果共有的香气成分有26种,烯烃中单萜烯及倍半萜烯烃类化合物在三种芒果香气成分构成中都占有较大比率,特别是3-蒈烯(松木香气)及萜品油烯(松木树脂味),两者总量在三种芒果香气成分中占比都超过20%,对形成芒果特有的香气都有重大的贡献。而2-蒈烯(甜香味)、柠檬烯(柠檬果香味)、α-水芹烯(清香味)和β-月桂烯(清淡的香脂香气)则进一步形成芒果特有的香气,但共有成分的含量在不同品种芒果间存在差别。7类化合物中烯烃类化合物在三种芒果中含量占比最高,金煌芒与其他两种芒果相比,含有更多的酯类、醛类和醇类等香气成分,对应的青皮芒独有的香味成分则相对较少,这也是金煌芒香气浓郁,而青皮芒香气较寡淡的原因。结果表明,凭借全二维气相色谱-飞行时间质谱联用仪强大的分离及定性能力,可以获得比常规气相色谱-质谱联用仪更多的香气成分信息,对香精香料的精细化发展起到重要的促进作用。

  • 图  1   GC×GC和GC分离效果对比图

    Figure  1.   Separation effect comparison of GC×GC and GC

    图  2   反向和正向柱系统测试金煌芒的二维色谱轮廓图

    注:a:反向柱系统;b:正向柱系统。

    Figure  2.   Chromatogram of JinHuang mango tested by reverse and forward column systems

    图  3   四种香气成分的质谱匹配图

    注:a:3-蒈烯;b:萜品油烯;c:邻伞花烃;d:αα,4-三甲基苯甲醇。

    Figure  3.   Mass spectrum matching map of four kinds of aroma components

    图  4   三种芒果的二维色谱轮廓图

    注:a:金煌芒;b:小台芒;c:青皮芒。

    Figure  4.   Chromatogram of three kinds of mangos

    表  1   不同萃取头的萃取效果

    Table  1   Extraction effect of different fiber

    萃取头类型PDMSDVB/CAR/PDMS
    总峰面积795360945479
    检出有效化合物总数(个)88114
    下载: 导出CSV

    表  2   不同萃取温度下的萃取效果

    Table  2   Extraction effect of different extraction temperature

    萃取头温度(℃)506070
    总峰面积902356945479923432
    检出有效化合物总数(个)98114110
    下载: 导出CSV

    表  3   不同萃取时间下的萃取效果

    Table  3   Extraction effect of different extraction time

    萃取头时间(min)506070
    总峰面积894556945479933227
    检出有效化合物总数(个)93114110
    下载: 导出CSV

    表  4   不同解吸温度下的萃取效果

    Table  4   Extraction effect of different desorption temperature

    解吸温度(℃)240250260
    总峰面积927956945479944678
    检出有效化合物总数(个)101114110
    下载: 导出CSV

    表  5   三种芒果的香气成分及相对含量

    Table  5   Aroma components and relative contents of three kinds of mangos

    序号类别化合物名称 化学式 一维时间(min)二维时间(s)金煌芒(%)小台芒(%)青皮芒(%)
    1醇类乙醇C2H6O4.280.610.7071.0400.088
    2异戊醇C5H12O10.950.830.007
    31-己醇C6H14O14.950.900.010
    43-己烯-1-醇C6H12O15.780.860.3210.0010.003
    5环己基甲醇C7H14O20.452.230.004
    64-萜烯醇C10H18O21.031.600.002
    73-环戊基-1-丙醇C8H16O22.532.630.009
    8顺式-3-壬烯-1-醇C9H18O23.121.080.013
    9α-松油醇C10H18O23.281.320.053
    10(6Z)-壬烯-1-醇C9H18O23.781.060.005
    11对薄荷-1,5-二烯-8-醇C10H1624.031.200.010
    12(E,Z)-3,6-亚壬基-1-醇C9H16O24.531.010.853
    13(E,Z)-3,6-壬二烯-1-醇C9H16O24.621.000.313
    14反式,顺式-2,6-壬二烯-1-醇C9H16O24.950.980.0100.005
    15(E)-2-癸烯-1-醇C10H20O25.782.440.025
    164-丙基-1,6-庚二烯-4-醇C10H18O26.032.430.088
    17异香芹醇C10H16O26.281.290.0630.010
    18αα,4-三甲基苯甲醇C10H14O26.701.040.3840.5510.239
    19醇类苯甲醇C7H8O27.280.730.1260.0600.005
    20苯乙醇C8H10O27.950.840.0060.004
    211-十二醇C12H26O29.031.340.010
    22二-表-1,10-库贝醇C15H26O30.702.280.029
    23蓝桉醇C15H26O33.371.920.217
    24α-杜松醇C15H26O33.871.730.046
    251-十六醇C16H34O36.531.702.366
    26芳香烃类对伞花烃C10H1412.282.652.776
    27邻伞花烃C10H1412.482.691.9830.4403.784
    284-异丙烯基甲苯C10H1216.952.010.042
    29去氢白菖烯C15H2225.953.270.3960.6000.007
    30醛类2-己烯醛C6H10O11.031.490.015
    31苯甲醛C7H6O19.121.180.0480.301
    32(E)-2-壬醛C9H16O19.371.760.1640.013
    33(E,Z)-2,6-壬醛C9H14O20.701.570.194
    34苯乙醛C8H8O22.121.180.156
    35十四醛C14H28O28.032.494.534
    364-甲氧基苯甲醛C8H8O230.121.110.504
    37十五醛C15H30O30.122.510.031
    38(4,6,6-三甲基双环[3.1.1]庚-3-烯-2-基)乙醛C12H18O30.622.510.243
    39(Z)-13-十八碳烯醛C18H34O30.702.420.178
    40十六醛C16H32O32.122.610.444
    41胡椒醛C15H2433.951.021.017
    422-异丙基-5-甲基己基-4-烯醛C10H16O34.370.890.008
    43顺式,顺式,顺式-7,10,13-十六碳三醛C16H26O36.622.180.022
    44香兰素C8H8O339.780.770.3100.006
    45酸类丁酸C4H8O222.370.510.123
    46己酸C6H12O227.030.550.0070.115
    47辛酸C8H16O231.620.560.003
    48壬酸C9H18O233.620.590.055
    49十四烷酸C14H28O241.950.830.2970.0800.007
    50正十六酸C16H32O245.371.030.004
    51酮类2,2,4-三甲基-3-戊酮C8H14O616.030.520.007
    524-羟基-2-戊酮C5H10O217.700.770.001
    533,5-辛二烯-2-酮C8H12O19.121.450.053
    545-乙基二氢-2(3H)-呋喃酮C6H10O223.371.150.007
    554,6,6-三甲基-(1S)-双环[3.1.1] -3-庚烯-2-酮C10H14O24.371.840.148
    561-(4-甲基苯基)-乙酮C9H10O24.871.360.098
    571-(3-甲基苯基)-乙酮C9H10O24.871.360.037
    58(Z)-6,10-二甲基-5,9-十二烯-2-酮C13H22O26.622.080.033
    59(E)-6,10-二甲基-5,9-十一碳二烯-2-酮C13H22O26.702.080.3300.1760.013
    60反式-β-紫罗兰酮C13H20O28.282.140.0480.174
    61四氢-6-丙基-2H-吡喃-2-酮C8H14O228.871.350.238
    62二氢-5-戊基-2(3H)-呋喃酮C9H16O230.201.320.1680.272
    63环辛酮C8H14O31.450.700.004
    645-己基二氢-2(3H)-呋喃酮C10H18O232.281.390.018
    65四氢-6-戊基- 2H-吡喃-2-酮C10H18O233.281.450.0060.010
    66四氢-6-(2-戊烯基)-(Z)-2H-吡喃-2-酮C10H16O234.451.370.071
    675,6,7,7a-四氢-4,4,7a-三甲基-(R)-2(4H)-苯并呋喃酮C11H16O235.701.430.044
    685,6,7,7a-四氢-4,4,7a-三甲基-2(4H)-苯并呋喃酮C11H16O235.781.430.004
    69烯烃/环烷烃α-蒎烯C10H165.623.5610.418
    703,6,6-三甲基 -双环[3.1.1]-2-庚烯C10H165.623.730.030
    711-甲基-2,4-环二烯C7H105.951.720.003
    72莰烯C10H166.623.600.013
    734-甲基-3-(1-甲基亚乙基)-环己烯C10H168.123.970.009
    74烯烃/环烷烃2-蒈烯C10H168.123.970.495
    75β-蒎烯C10H168.123.980.1530.560
    763-蒈烯C10H168.623.6810.7839.5698.905
    77α-水芹烯C10H169.123.510.3661.2971.504
    78β-月桂烯C10H169.283.011.1812.1732.417
    79(+)-2-蒈烯C10H169.533.521.4806.0215.216
    801-甲基-4-(1-甲基乙基)-1,3-环己二烯C10H169.783.320.308
    81柠檬烯C10H1610.123.341.4873.3053.623
    82β-水芹烯C10H1610.373.380.5552.2352.172
    83(Z)-3,7-二甲基-1,3,6-辛二烯C10H1611.372.880.0200.014
    84γ-松油烯C10H1611.533.350.0070.3760.850
    85Β-罗勒烯C10H1611.782.830.2120.140
    86萜品油烯C10H1612.623.1512.85117.54512.975
    874,5-二甲基-2,6-辛二烯C10H1813.122.370.104
    881,3,8-对薄荷三烯C12H22O215.702.550.8891.4901.518
    891,5,8-对薄荷三烯C15H2416.452.650.5421.1501.076
    90E,E-2,6-二甲基-1,3,5,7-辛四烯C10H1416.872.390.183
    912,4-二甲基苯乙烯C10H1216.872.051.6273.7910.590
    92α-毕澄茄烯C15H2417.204.730.356
    933-乙基-1,4-己二烯C8H1417.701.290.108
    94(E,E)-2,4-庚二烯C7H10O17.701.300.0700.134
    95依兰烯C15H2417.874.770.010
    96珂巴烯C15H2418.034.801.2187.7912.587
    97(-)-α-古芸烯C15H2419.035.000.002
    98(E)2,5-二甲基-1,6-辛二烯C10H1819.532.172.5320.726
    99β-珂巴烯C15H2420.454.300.738
    100α-愈创木烯C15H2420.534.310.260
    101β-榄香烯C15H2420.533.492.065
    102石竹烯C15H2420.624.180.1800.608
    103顺式-穆罗拉-3,5-二烯C15H2421.454.231.4892.171 0.759
    1042-亚甲基-5-(1-甲基乙烯基)-8-甲基-
    双环[5.3.0]癸烷
    C15H2421.783.880.0150.131
    105(+)-香橙烯C15H2421.784.230.114
    1061R,3Z,787-9-4,11,11三甲基-8-亚甲基
    双环[7.2.0]-3-十一碳烯
    C15H2421.783.950.0980.4140.708
    107葎草烯C15H2422.283.741.362
    1081,2,3,3a,4,5,6,7-八氢-1,4-二甲基-7-(1-甲基乙烯基)-
    [1R-(1α,3,4α,7β)]-天蓝烯
    C15H2422.454.121.2990.184
    109顺式-β-金合欢烯C15H2422.453.211.543
    110马兜铃烯C15H2422.533.800.010
    111(+)-喇叭烯C15H2422.954.021.629
    1123,7-二甲基-(Z)-2,6-辛二烯C10H16O23.031.330.6730.4870.060
    113大根香叶烯C15H2423.203.670.031
    114异长叶烯C15H2423.373.892.018
    115α-布藜烯C15H2423.373.991.396
    116β-布藜烯C15H2423.373.731.883
    117γ-依兰油烯C15H2423.453.834.575
    118α-依兰烯C15H2423.623.633.3691.9541.396
    119紫苏烯C15H2423.623.682.5910.066
    120毕澄茄烯C15H2424.783.592.3580.448
    121螺环[4.4]-1-壬烯C10H16O25.622.460.1850.408
    122双环[5.2.0]-1-壬烯C9H1425.622.410.199
    123α-白菖考烯C15H2027.702.833.097
    1242-甲基-1-烯-3-壬炔C10H1627.031.230.2070.067
    125酯类乙酸乙酯C4H8O23.451.080.0960.580
    126丙酸乙酯C5H10O24.531.500.039
    127酯类丁酸乙酯C6H12O26.201.960.002
    1282-丁烯酸-(Z)-甲酯C5H8O26.531.441.884
    129环丙基羧酸乙酯C6H10O27.871.830.003
    130丁酸丙酯C7H14O28.282.440.0320.472
    1312-丁烯酸-(Z)-乙酯C6H10O29.451.740.017
    132丁酸丁酯C8H16O210.952.670.0350.008
    133己酸乙酯C8H16O211.452.510.010
    1342-丙烯酸-2-甲基-环氧乙烷基甲酯C7H10O312.531.710.048
    135乙酸己酯C8H16O212.532.230.004
    136(Z)-3-己烯-1-醇乙酯C8H14O213.621.960.014
    137(E)-3-己烯-1-醇乙酯C8H14O213.781.950.002
    138(E)-2-己烯-1-醇乙酯C8H14O214.281.911.2900.617
    139丁酸-(Z)-2-戊烯酯−C9H16O215.122.410.007
    140(Z)-丙酸-3-己烯酯C9H16O215.622.280.014
    141辛酸乙酯C10H20O216.872.680.6180.136
    142顺-3-己烯基丁酯C10H18O217.372.510.463
    143环丙烷羧酸-2-戊酯C9H16O217.452.190.0110.2140.508
    144戊二酸戊酯C7H14O317.453.030.003
    145丁酸-4-己烯-1-酯C10H18O217.532.500.002
    146丁酸-(E)- 2-己烯酯C10H18O217.952.462.306
    147(E)-2-甲基-2-丁烯-1-甲基丙烯酸甲酯C9H14O218.781.960.008
    1482-丁烯酸-2-甲基丙酯C8H14O219.952.280.107
    1491,2-丙二醇-1-乙酸酯C5H10O320.700.690.028
    1502-丁烯酸-3-(E,Z)-己烯酯C10H16O221.032.040.015
    151丁酸辛酯C12H24O221.372.911.5170.937
    1524-甲基丙烯酸戊酯C11H20O221.452.530.004
    1531,2-丙二醇-2-乙酸酯C5H10O321.700.680.002
    154丁内酯C4H6O221.780.950.005
    155癸酸乙酯C12H24O221.872.780.002
    156(E)-六角-3-烯基(E)-2-甲基-2-丁烯酸酯C11H18O222.532.320.805
    1574Z-己烯基苯甲酸酯C11H18O222.532.290.394
    1584Z-己烯酸己烯酯C11H18O222.532.280.012
    159丁酸壬酯C13H26O223.703.021.059
    160丁酸-1-乙烯己酯C12H22O224.282.780.027
    161乙酸-顺式- -3-壬烯酯C11H20O224.282.740.006
    162烟酸乙酯C8H9NO225.781.350.213
    163十二酸乙酯C14H28O226.372.880.035
    164丙位辛内酯C8H14O227.951.280.741
    165丁酸-(E)-3,7-二甲基-2,6-辛二烯基酯C14H24O227.452.630.2390.028
    166三醋酸甘油酯C9H14O631.281.010.592
    1671,2,3-丙三醇-1-乙酸酯C5H10O434.370.660.447
    168三氟-3,7-二甲基辛基乙酸酯C12H21F3O234.781.590.003
    169δ-十二内酯C12H22O237.281.580.002
    170苯甲酸苄酯C14H12O240.531.580.168
    注:“−”为未检出。
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-07-22
  • 网络出版日期:  2021-06-01
  • 刊出日期:  2021-07-31

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