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园艺学报 ›› 2026, Vol. 53 ›› Issue (2): 496-512.doi: 10.16420/j.issn.0513-353x.2025-0494

• 研究论文 • 上一篇    下一篇

‘梨香’菊花香成分鉴定及香气特征分析

张鹏*, 叶新茹*, 栗华隆, 陈昱媛, 孙明**(), 唐玉超**()   

  1. 北京林业大学园林学院,林木资源高效生产全国重点实验室,花卉种质创新与分子育种北京市重点实验室,国家花卉工程技术研究中心,城乡生态环境北京实验室,园林环境教育部工程研究中心,林木花卉遗传育种教育部重点实验室,北京 100083
  • 收稿日期:2025-05-31 修回日期:2025-12-05 出版日期:2026-02-25 发布日期:2026-02-12
  • 通讯作者:
    ** E-mail:
  • 作者简介:

    *共同第一作者

  • 基金资助:
    国家自然科学基金项目(31971708); 国家自然科学基金项目(32271947); 雄安新区科技计划项目(XA202501102005K)

Identification of Floral Fragrance Components and Analysis of Aroma Characteristics of Chrysanthemum × morifolium‘Lixiang’

ZHANG Peng, YE Xinru, LI Hualong, CHEN Yuyuan, SUN Ming**(), TANG Yuchao**()   

  1. State Key Laboratory of Efficient Production of Forest Resources,Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding,National Engineering Research Center for Floriculture,Beijing Laboratory of Urban and Rural Ecological Environment,Engineering Research Center of Landscape Environment of Ministry of Education,Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education,School of Landscape Architecture,Beijing Forestry University,Beijing 100083,China
  • Received:2025-05-31 Revised:2025-12-05 Published:2026-02-25 Online:2026-02-12

摘要:

以‘梨香’菊(Chrysanthemum × morifolium‘Lixiang’)为材料,采用顶空吸附法,结合自动热脱附—气相色谱—质谱联用技术对‘梨香’菊不同阶段(花蕾期、半开期和盛开期,14:00)以及不同时间点(6:00、22:00)盛开期的花香物质进行测定和分析,并利用主成分分析、层次聚类分析和偏最小二乘判别分析,构建‘梨香’菊花朵挥发物的判别模型并确定差异挥发性组分,最后计算相对气味活度值(ROAV),解析‘梨香’菊花朵的香气特征。不同开花阶段及时间点下共检测出86种花香物质,其中39种为共有,盛开期14:00花朵中的挥发物种类最多(68种)、释放量最高(4 032.57 ng · g-1 · h-1)。86种花香物质被划分为4类,其中萜类挥发物最多、释放量最大,且α-蒎烯为‘梨香’菊花香物质中含量最高的挥发物。利用VIP值和P值,在不同开花阶段/时间点下的‘梨香’菊花朵中共筛选出24种差异挥发物。通过ROAV分析,确定了4种关键的特征香气成分,其中异丁酸乙酯的气味贡献度最高,赋予了‘梨香’菊花朵果香的特性,α-蒎烯、2-甲基丙酸丙酯和(Z)-β-罗勒烯分别赋予树脂香/松木香、果香和萜类的特性。

关键词: 菊花, 挥发性有机化合物, 气相色谱—质谱联用, 偏最小二乘判别分析, 相对气味活度值

Abstract:

In this study,Chrysanthemum × morifolium‘Lixiang’was used as the material,and the headspace adsorption(HSA)method combined with automatic thermal desorption-gas chromatography- mass spectrometry(ATD-GC-MS)was utilized to analyze the floral fragrance of‘Lixiang’flowers at bud stage,half-open stage,and peak flowering stage at 14:00,as well as at peak flowering stage at 6:00 and 22:00. The principal component analysis(PCA),hierarchical clustering analysis(HCA)and partial least squares discriminant analysis(PLS-DA)were employed to construct a discriminant model for the volatile organic compounds(VOCs)and to identify differential VOCs. Finally,the relative odor activity value(ROAV)was calculated to analyze the aroma characteristics. A total of 86 VOCs were detected across different flowering stages and time points,with 39 common to all. At 14:00 during the peak flowering stage,both the highest number of VOC types(68)and the highest emission rate(4 032.57 ng · g-1 · h-1)were observed. The 86 VOCs were classified into 4 categories,terpenes exhibited both the highest number and emission levels of VOCs at all sampling points,α-pinene was the most abundant VOC in the fragrance of‘Lixiang’. Using VIP scores and P values,a total of 24 differential volatiles were screened. ROAV analysis identified 4 key characteristic aroma components,ethyl isobutyrate provided the highest odor contribution value,imparting a characteristic fruity fragrance to‘Lixiang’flowers,α-pinene,propyl 2-methylpropanoate and (Z)-β-ocimene imparted resin/pine-like,fruity and terpene fragrance characteristics,respectively.

Key words: Chrysanthemum × morifolium, volatile organic compounds, gas chromatography-mass spectrometry, partial least squares discriminant analysis, relative odor activity value