Mi Yuzhang, Dong Hongjing, Liu Shuang, Chen Jian, Wang Xiao
School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, 250300, China.
Shandong Engineering Research Center for Innovation and Application of General Technology for Separation of Natural Products, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China.
Anal Methods. 2025 Jun 19. doi: 10.1039/d5ay00504c.
Lonicerae japonicae flos (LJF), a traditional Chinese medicine characterized by its dual nature as both food and medicine, has been prepared into tea through a stir-frying method. However, dynamic changes in chemical components in LJF tea during the stir-frying process have not yet been fully revealed. In this study, the content of volatile constituents (VOCs) and non-volatile constituents (nVOCs) in LJF tea with varying stir-frying fixation times was measured using GC-IMS and UPLC-Q-TOF-MS/MS, respectively. A total of 63 VOCs were identified, and 8 featured VOCs were screened using multivariate data analysis. A total of 54 nVOCs were detected, and 5 featured nVOCs were identified. After comprehensively considering the content of both volatile and non-volatile components, it was determined that 40-60 seconds of stir-frying is optimal for maintaining a higher concentration of beneficial components and enhancing the aroma of LJF tea. This study provides a theoretical foundation for understanding the mechanisms underlying the stir-frying process in LJF tea production and offers valuable insights for quality control and enhancement strategies related to LJF tea.
金银花,一种具有药食同源特性的传统中药,已通过炒制方法制成茶。然而,金银花茶在炒制过程中化学成分的动态变化尚未完全揭示。在本研究中,分别使用气相色谱-离子迁移谱(GC-IMS)和超高效液相色谱-四极杆-飞行时间串联质谱(UPLC-Q-TOF-MS/MS)测定了不同炒制杀青时间的金银花茶中挥发性成分(VOCs)和非挥发性成分(nVOCs)的含量。共鉴定出63种挥发性成分,并通过多变量数据分析筛选出8种特征挥发性成分。共检测到54种非挥发性成分,并鉴定出5种特征非挥发性成分。综合考虑挥发性和非挥发性成分的含量后,确定40-60秒的炒制时间最有利于保持较高浓度的有益成分并增强金银花茶的香气。本研究为理解金银花茶生产中炒制过程的机制提供了理论基础,并为金银花茶的质量控制和提升策略提供了有价值的见解。