“The Fruitghurt Formulations Are Combination of Red Guava and Pineapple Juice by Using the Encapsulation Method, As an Alternative Source of Vitamin C ”. Jurnal Online Pertanian Tropik 9, no. 3 (February 9, 2023): 213–219. Accessed February 4, 2026. https://idjpcr.usu.ac.id/jpt/article/view/10470.