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茶叶科学 ›› 2026, Vol. 46 ›› Issue (2): 331-342.doi: 10.13305/j.cnki.jts.2026.02.009

• 研究报告 • 上一篇    下一篇

响应面法优化及分子对接用于庐山云雾茶香气分析

吴慧灵1, 石向群2,*, 余梦涵1, 金如婷1, 何彦露1, 廖名鑫1, 高银祥1   

  1. 1.九江学院药学与生命科学学院,江西 九江 332005;
    2.九江学院分析测试中心,江西 九江 332005
  • 收稿日期:2025-09-03 修回日期:2025-11-09 出版日期:2026-04-15 发布日期:2026-04-22
  • 通讯作者: *shixiangqun1972@163.com
  • 作者简介:吴慧灵,女,本科在读,主要从事生物科学方面的研究。
  • 基金资助:
    九江市科技计划农业专项202425-08; 九江市科技计划农业专项202425-11; 九江市彭泽茶科技小院; 大学生创新创业训练计划(G202511863021)

Response Surface Methodology Optimization and Molecular Docking for Aroma Analysis of Lushan Yunwu Tea

WU Huiling1, SHI Xiangqun2,*, YU Menghan1, JIN Ruting1, HE Yanlu1, LIAO Mingxin1, GAO Yinxiang1   

  1. 1. College of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China;
    2. Analysis and Testing Center, Jiujiang University, Jiujiang 332005, China
  • Received:2025-09-03 Revised:2025-11-09 Online:2026-04-15 Published:2026-04-22

摘要: 为明确庐山云雾茶香气组成,采用Box-Behnken中心组合试验及响应面分析法,对顶空固相微萃取条件进行优化,并联合气质联用进行分析。另外,基于分子结构预测气味嗅觉受体,结合基于机器学习对配体结合位点进行预测,最后对气味分子-嗅觉受体进行半柔性分子对接。结果表明,响应面优化最佳萃取条件为样品质量1.03 g、萃取时间43 min、萃取温度73 ℃,验证误差为4.13%。在庐山云雾茶中共检出醇类、醛类、酮类等10类共计87种挥发性化合物。OAV≥1的主要是芳樟醇、β-环柠檬醛、香叶醇、α-蒎烯、α-紫罗兰酮、反式-β-紫罗兰酮6种物质,通过分子对接验证时,其结合能均≤﹣4.0 kcal·mol-1。本研究不仅优化茶叶香气检测方法,也创新使用分子对接对茶叶主要香气成分进行验证,为庐山云雾茶香气成因研究提供了基础,也为其制茶工艺、品质分析提供了参考。

关键词: 响应面法, 顶空-固相微萃取, 分子对接, 庐山云雾茶

Abstract: To elucidate the aroma profile of Lushan Yunwu Tea, a Box-Behnken experimental design combined with response surface methodology was applied to optimize the headspace solid-phase microextraction (HS-SPME) conditions, followed by gas chromatography-mass spectrometry (GC-MS) analysis. Additionally, olfactory receptors corresponding to the odorants were inferred from molecular structural features. Ligand-binding sites were predicted using machine-learning methods, and semi-flexible molecular docking was finally conducted for the odorant-olfactory receptor complexes. The results indicate that the optimal extraction conditions obtained by response surface optimization were as follows: sample weight 1.03 g, extraction time 43 min, and extraction temperature 73 ℃, with a validation error of 4.13%. A total of 87 volatile compounds belonging to ten chemical classes, including alcohols, aldehydes and ketones, were identified in Lushan Yunwu Tea. The key odorants with odor activity values (OAVs)≥1 were linalool, β-cyclocitral, geraniol, α-copaene, α-ionone and trans-β-ionone. Molecular docking reveals that all odorant-receptor pairs exhibited binding energies ≤﹣4.0 kcal·mol-1. This study not only optimized the analytical method for profiling tea aroma, but also innovatively employed molecular docking to validate the key aroma-active constituents. The findings provided a foundation for elucidating the formation mechanisms of Lushan Yunwu Tea aroma and offered references for its processing optimization and quality assessment.

Key words: responsesurface methodology, headspace solid-phase microextraction, molecular docking, Lushan Yunwu Tea

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