N. N. I. B. Faroerzy and N. F. B. Razali, “Antioxidant Activity of Black Tea and Oolong Tea Extracts as Natural Preservatives in Homemade Cookies”, peat, vol. 7, no. 1, pp. 536–548, May 2026, Accessed: Jul. 23, 2026. [Online]. Available: https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/22585