| Title: | "Quality assessment of rose tea with different drying methods based on physicochemical properties, HS-SPME-GC-MS, and GC-IMS" |
| Author(s): | Liu Z; Liu LX; Han QD; Dong GZ; Wang B; Zhang JF; Lei SM; Liu YG; |
| Address: | "College of Life Sciences, Linyi University, Linyi, China. College of Life Science and Technology, Xinjiang University, Urumqi, China. Linyi Academy of Agricultural Sciences, Linyi, China. Pingyin Rose Research Institute, Pingyin, China. Shandong Huamei Biotechnology Co., Ltd., Jinan, China. Jinan Zijin Rose Co., Ltd., Jinan, China" |
| ISSN/ISBN: | 1750-3841 (Electronic) 0022-1147 (Linking) |
| Abstract: | "The purpose of this study is to compare the physicochemical properties and volatile flavor compounds of rose tea obtained by the methods of normal temperature drying, hot-air drying (HAD), and vacuum freeze-drying (VFD) and to evaluate the quality of rose tea. The physicochemical results showed that the content of ascorbic acid (VC) and the pH value was the highest in rose tea obtained by HAD. The contents of anthocyanin, proanthocyanidins, and total phenols were highest in rose tea obtained by VFD. However, there was no significant difference in total flavonoids between drying methods. The volatile organic compounds (VOCs) in rose tea with different drying methods were analyzed by headspace solid-phase microextraction-gas chromatography-mass spectroscopy (HS-SPME-GC-MS) and HS GC-ion mobility spectroscopy (HS-GC-IMS), and the flavor fingerprint of rose tea was established by principal component analysis (PCA). The concentration of VOCs in rose tea varied greatly with different drying methods. The main flavor compounds of rose tea were alcohols, esters, aldehydes, and terpenoids. HS-GC-IMS was used for the identification of volatile flavor compounds of rose tea, thereby helping to assess the quality of rose tea. In addition, the rose tea samples with different drying methods were well distinguished by PCA. This study deepens the understanding of the physicochemical properties and volatile flavor compounds of rose tea with different drying methods and provides a reference for the identification of rose tea with different drying methods. PRACTICAL APPLICATION: This study deepens the understanding of the physicochemical properties and volatile flavor compounds of rose tea with different drying methods and provides a reference for the identification of rose tea with different drying methods. It also provides an effective theoretical basis for consumers to buy rose tea" |
| Keywords: | Gas Chromatography-Mass Spectrometry/methods *Solid Phase Microextraction/methods Cluster Analysis Alcohols/analysis *Volatile Organic Compounds/analysis Tea Gc-ims Gc-ms physicochemical properties rose tea volatile organic compounds; |
| Notes: | "MedlineLiu, Zhen Liu, Ling-Xiao Han, Qing-Dian Dong, Gui-Zhi Wang, Bin Zhang, Ji-Fang Lei, Sheng-Ming Liu, Yun-Guo eng 2019YYSP026/the Key Research and Development Program in Shandong Province/ LYDX2018BS032/the High - level Talent Introduction Project of Linyi University/ 2021QCYY007/the Innovation team of the introduction and education plan for young and innovative talents in Shandong Provincial University/ 2023/02/16 J Food Sci. 2023 Apr; 88(4):1378-1391. doi: 10.1111/1750-3841.16500. Epub 2023 Feb 15" |
