天然产物研究与开发 ›› 2023, Vol. 35 ›› Issue (12): 2015-2026.doi: 10.16333/j.1001-6880.2023.12.001

• 研究论文 •    下一篇

HS-SPME-GC-TOF-MS结合ROAV分析花果香型红茶特征香气成分

王金源1,张佳慧1,庄莉萍1,林宏政1,2,封娇1,田维素1,陈章盛3,郝志龙1,2*   

  1. 1福建农林大学园艺学院;2茶学福建省高校重点实验室;3福建仙山岩茶园有限公司,福州 350000
  • 出版日期:2023-12-28 发布日期:2023-12-27
  • 基金资助:
    福建省现代农业(茶叶)产业技术体系专项(2021-637);福建张天福茶叶发展基金会科技创新基金(FJZTF01-FJZTF03)

Analysis of characteristic aroma compounds of black tea with flowery-fruity flavour by HS-SPME-GC-TOF-MS combined with ROAV

WANG Jin-yuan1,ZHANG Jia-hui1,ZHUANG Li-ping1,LIN Hong-zheng1,2,FENG Jiao1,TIAN Wei-su1,CHENG Zhang-shen3,HAO Zhi-long1,2*   

  1. 1College of Horticulture,Fujian Agriculture and Forestry University;2Key Laboratory of Tea Science in Universities of Fujian Province;3Fujian Xianshanyan Tea Plantation Co.,Ltd.,Fuzhou 350000,China
  • Online:2023-12-28 Published:2023-12-27

摘要:

为探究永泰菜茶与金牡丹加工的花果香型红茶特征香气成分,采用顶空固相微萃取-气相色谱-飞行时间质谱联用(HS-SPME-GC-TOF-MS)技术,结合正交偏最小二乘判别分析(OPLS-DA)与相对气味活度值(ROAV)分析金牡丹红茶和6个永泰(Y-122、Y-127、Y-128、Y-170、Y-192、Y-193)加工的花果香红茶香气成分。7个红茶样中共鉴定出82种挥发性物质,包括醇类、酯类、醛类、酮类、酸类、烯类等,其中醇类、酮类、酯类物质相对含量较高,依据变量重要性投影(VIP)筛选出21种特征挥发性物质(VIP>1,P<0.05),进一步结合相对气味活度值(ROAV)筛选出13种特征香气物质(VIP>1,ROAV>1.00),其中橙花叔醇、苯乙醇和己酸叶醇酯是构成金牡丹红茶果香带花香的特征香气物质,水杨酸甲酯是Y-122呈现杏仁香的特征香气物质,芳樟醇是Y-127呈现馥郁花香带果香的特征香气物质,γ-壬内酯和α-法呢烯为Y-192呈现清花香带果香的特征香气物质。可见,7个花果香型红茶香气特征物质存在差异,具有花果香特征的芳樟醇、水杨酸甲酯、γ-壬内酯和α-法呢烯是永泰菜茶红茶的关键呈香物质,为特殊香型红茶种质资源挖掘与品质调控提供参考。

关键词: 果香红茶, 特征香气, 气相色谱-飞行时间-质谱联用仪, 相对气味活度值

Abstract:

In order to explore the characteristic aroma compounds of flower and furit scented black tea processed with Yongtai Caicha and Jinmudan(JMD),this study applied headspace solid phase microextraction gas chromatography-time-of-flight mass spectrometry (HS-SPME-GC-TOF-MS) combined with orthogonal partial least squares discriminant analysis (OPLS-DA) and relative odor activity value (ROAV) to analysis aroma compounds of six Yongtai Caicha samples(Y-122,Y-127,Y-128,Y-170,Y-192,Y-193) and a JMD sample.The 82 types of volatile compounds were identified from seven black tea samples,including alcohols,esters,aldehydes,ketones,acids,alkenes,etc.,among which the contents of alcohols,ketones,esters were relatively higher.Twenty-ong characteristic volatile compounds were screened by variable importance in projection (VIP>1,P<0.05),further more,13 characteristic aroma compounds were selected (VIP>1,ROAV>1.00) combined with ROAV.Nerolidol,phenylethyl alcohol and 3-hexenyl hexanoate were the characteristic aroma compounds of the fruity and floral aroma in JMD black tea.Methyl salicylate was the characteristic aroma compounds of the almond aroma in Y-122,while linalool was the characteristic aroma compound of the fragrant floral with fruity aroma in Y-127,γ-nonanolide and α-farnesene were the characteristics aroma compound of the clear floral with fruity aroma in Y-192.Overall,there were differences in the characteristic aroma compounds of seven black tea samples.Linalool,methyl salicylate,γ-nonanolide and α-farnesene with floral-fruity characteristics are the crucial aroma compounds of Yongtai Chacai black tea,which provides reference for germplasm resources mining and quality control of special flavor black tea.

Key words: black tea with flowery-fruity flavor, characteristic aroma, GC-TOF-MS, relative odor activity value

中图分类号:  TS272.5