College of Chemical Engineering, Huaqiao University, 361021 Xiamen, China; Institute of Oil and Natural Product, Huaqiao University, 361021 Xiamen, China.
College of Chemical Engineering, Huaqiao University, 361021 Xiamen, China; Institute of Oil and Natural Product, Huaqiao University, 361021 Xiamen, China.
Food Chem. 2017 Oct 15;233:302-310. doi: 10.1016/j.foodchem.2017.04.110. Epub 2017 Apr 20.
Confusion among tea seed oils from Sect. Thea, Oleifera and Camellia in Camellia is a widespread problem in research and production. In this work, 22 fatty acids, squalene and 13 phytosterols in the three groups of tea seed oils from 16 Chinese regions were analyzed with GC-FID and GC-MS respectively. Thea oils were significantly higher in linoleic (C18:2) and palmitic (C16:0) acids but lower in oleic acid (C18:1) than Camellia and Oleifera oils while the latter two overlapped in major fatty acids. Similarly, Camellia and Oleifera oils clustered together based on the data of squalene and 12 phytosterols while Thea oils branched from them in HCA. Finally, a "FancyTiles" model was constructed to describe the fatty acids, squalene and phytosterols in a plot of semi-quantitative strategy. The results supply the basic data of the three types of tea seed oils and reveal the similarities and differences among them.
茶树种籽油（来自 Thea 组、Oleifera 和 Camellia）在研究和生产中普遍存在混淆问题。本工作采用 GC-FID 和 GC-MS 分别分析了来自中国 16 个地区的三组茶籽油中的 22 种脂肪酸、角鲨烯和 13 种植物甾醇。与 Camellia 和 Oleifera 油相比，Thea 油中的亚油酸（C18:2）和棕榈酸（C16:0）含量显著较高，而油酸（C18:1）含量较低，而后两种油在主要脂肪酸方面重叠。同样，基于角鲨烯和 12 种植物甾醇的数据，Camellia 和 Oleifera 油聚为一簇，而 Thea 油则从它们中分支出来。最后，构建了一个“FancyTiles”模型，以描述脂肪酸、角鲨烯和植物甾醇的半定量策略图。结果提供了这三种类型的茶籽油的基础数据，并揭示了它们之间的相似性和差异。
