Lee YM, Cheng CCX, Lai Chun Wong. High-Performance Liquid Chromatography Analysis of Caffeine and Trigonelline in Instant Coffee: A Malaysian Market Study. Malaysian J. Sci. [Internet]. 2025 Dec. 31 [cited 2026 Feb. 27];44(4):40-52. Available from: https://mjs.um.edu.my/index.php/MJS/article/view/50277