Hainan Key Laboratory of Biology of Tropical Flowers and Trees Resources, Forestry Institute, Hainan University, Haikou 570228, China.
Molecules. 2023 Sep 27;28(19):6836. doi: 10.3390/molecules28196836.
Partridge tea has high medicinal value due to its rich content of terpenoids, phenols, flavonoids, and other related bioactive components. In order to study the best drying method for partridge tea, four treatments, including outdoor sun drying (OD), indoor shade drying (ID), hot-air drying (HAD), and low-temperature freeze-drying (LTD), were performed. The results showed that the OD and HAD treatments favored the retention of the red color of their products, while the ID and LTD treatments were more favorable for the retention of the green color. The HS-SPME-GC-MS results showed that a total of 82 compounds were identified in the four drying treatments of partridge tea, and the most abundant compounds were terpenoids (88.34-89.92%). The HAD-treated tea had the highest terpenoid content (89.92%) and high levels of flavor compounds typical of partridge tea (52.28%). OPLS-DA and PCA showed that α-copaene, β-bourbonene, caryophyllene, α-guaiene, and δ-cadinene could be considered candidate marker compounds for judging the aroma quality of partridge tea with different drying treatments. This study will not only provide a basis for processing and flavor quality control but also for spice and seasoning product development in partridge tea.
鹧鸪茶因其富含萜类、酚类、黄酮类等相关生物活性成分，具有很高的药用价值。为了研究鹧鸪茶的最佳干燥方法，进行了四种处理，包括户外晒干（OD）、室内遮阴干燥（ID）、热空气干燥（HAD）和低温冷冻干燥（LTD）。结果表明，OD 和 HAD 处理有利于保持产品的红色，而 ID 和 LTD 处理更有利于保持产品的绿色。HS-SPME-GC-MS 结果表明，在鹧鸪茶的四种干燥处理中共鉴定出 82 种化合物，最丰富的化合物为萜类（88.34-89.92%）。HAD 处理的茶叶萜类含量最高（89.92%），且具有典型鹧鸪茶风味化合物（52.28%）的高水平。OPLS-DA 和 PCA 表明，α-可巴烯、β-布藜烯、石竹烯、α-愈创烯和δ-杜松烯可被视为判断不同干燥处理鹧鸪茶香气质量的候选标记化合物。本研究不仅为加工和风味质量控制提供了依据，也为鹧鸪茶的香料和调味品产品开发提供了依据。
