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• 成分分析 •    下一篇

康砖茶叶风味特征及挥发性成分的研究

张婷1,倪辉2,伍菱1,胡阳2,邬应龙3,黄高凌4,李利君1,2   

  1. 1. 集美大学食品与生物工程学院
    2. 集美大学
    3. 四川农业大学
    4. 集美大学生物工程学院
  • 收稿日期:2019-01-15 修回日期:2019-11-01 出版日期:2020-03-25 发布日期:2020-03-23
  • 通讯作者: 倪辉 E-mail:nihui@jmu.edu.cn
  • 基金资助:
    国家自然科学基金;福建省自然科学基金

Study on flavor characteristics and volatile compounds of Kangzhuan tea

  • Received:2019-01-15 Revised:2019-11-01 Online:2020-03-25 Published:2020-03-23
  • Contact: NI Hui E-mail:nihui@jmu.edu.cn

摘要: 摘要:康砖茶叶是一种具代表性的黑茶品种,但其香气品质特征尚未系统研究。本论文运用感官检验、气相色谱-质谱联用(GC-MS)和气相色谱-嗅闻(GC-O)技术对康砖茶叶香气特征进行了分析研究。感官检验结果表明,康砖茶叶主要香气轮廓为花香和木香。运用GC-MS分析,共鉴定出35种挥发性成分,包括8种醇类、6种醛类、8种酮类、3种萜烯类、4种氧化物类和6种其他类。其中,含量较高的挥发性成分为1,2,3-三甲氧基苯(151.7 μg/mL)、二氢猕猴桃内酯(96.9 μg/mL)、2-乙基己醇(37.3 μg/mL)、雪松醇(34.8 μg/mL)和苯乙醛(25.5 μg/mL)。GC-O结果显示,康砖茶叶的关键香气成分为反式-2-壬烯醛(青草香)、反式-β-紫罗兰酮(花香)、芳樟醇(花香)、己醛(青草香)、苯乙醛(青草香)、反式-α-紫罗兰酮(木香和陈旧味)和芳樟醇氧化物I(花香)。这一结果为进一步研究康砖茶叶香气特征奠定了实验基础。

关键词: 关键词:康砖茶叶, 感官评价, 关键香气成分, 气相色谱-质谱技术(GC-MS), 气相色谱-嗅闻技术(GC-O)

Abstract: Abstract: Kangzhuan tea is a representative variety of dark tea, but whose aroma quality has not been systematically studied. In this paper, the aroma characteristics of Kangzhuan tea were analyzed using sensory evaluation, gas chromatography-mass spectrometry (GC-MS) and gas chromatography-olfactometry (GC-O). The results of sensory evaluation showed that floral and wood notes were the main aroma profile of kangzhuan tea. By GC-MS analysis, 35 volatile compounds were identified from Kangzhuan tea. Among them, 1,2,3-trimethoxybenzene (151.7 μg/mL), dihydroactinidiolide (96.9 μg/mL), 2-ethylhexanol (37.3 μg/mL), cedrol (34.8 μg/mL) and phenylacetaldehyde (25.5 μg/mL) had higher concentration than other volatiles. GC-O results showed that trans-2-nonenal (green), trans-β-ionone (floral), linalool (floral), hexanal (green), phenylacetaldehyde (green), trans-α-ionone (woody and stale) and linalool oxide I (floral) were the main flavor contributing compounds. The results laid an experimental foundation for further study on the aroma characteristics of Kangzhuan tea.

Key words: Keywords: Kangzhuan tea, sensory evaluation, key aroma compounds, gas chromatography-mass spectrometry (GC-MS), gas chromatography-olfactometry(GC-O)

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