Wattanasiri, Chakree, Nutlada Nusontra, and Acharavadee Bunkoom. “L-Phenylalanine Supplementation Effects on Catechin Contents and Tea Quality of Fresh Assam and Chinese Green Tea Leaves”. Science Essence Journal 39, no. 1 (April 18, 2023): 1–14. Accessed November 10, 2024. https://ejournals.swu.ac.th/index.php/sej/article/view/14986.