Nath, Lipsa Rani, B. Gowda, Siddabasave Gowda, Gowda, Divyavani, Hou, Fengjue, Chiba, Hitoshi, and Hui, Shu Ping
Herbal teas and beverages have gained global attention because they are rich in natural bioactive compounds, which are known to have diverse biological effects, including antioxidant and anticarcinogenic properties. However, the lipidomic profiles of herbal teas remain unclear. In this study, we applied an untargeted lipidomics approach using high-performance liquid chromatography coupled with linear ion trap-Orbitrap mass spectrometry to comprehensively profile, compare, and identify unknown lipids in four herbal teas: dokudami, kumazasa, sugina, and yomogi. A total of 341 molecular species from five major classes of lipids were identified. Multivariate principal component analysis revealed distinct lipid compositions for each of the herbs. The fatty acid α-linolenic acid (FA 18:3) was found to be abundant in kumazasa, whereas arachidonic acid (FA 20:4) was the most abundant in sugina. Interestingly, novel lipids were discovered for the first time in plants; specifically, short-chain fatty acid esters of hydroxy fatty acids (SFAHFAs) with 4-hydroxy phenyl nonanoic acid as the structural core. This study provides insight into the lipidomic diversity and potential bioactive lipid components of herbal teas, offering a foundation for further research into their health-promoting properties and biological significance. [Display omitted] • Lipid fingerprinting of four types of herbs led to the detection of 341 lipid species. • Multivariate analysis revealed distinct lipid compositions for each herbal tea. • Novel short-chain fatty acid esters of hydroxy fatty acids are uncovered in herbs. • The abundance of PUFAs in herbal tea made it an excellent choice as a health promotional drink. [ABSTRACT FROM AUTHOR]