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Syahrina D, Noval N. Optimasi Kombinasi Asam Sitrat dan Asam Tartrat sebagai Zat Pengasam pada Tablet Effervescent Ekstrak Ubi Jalar Ungu (Ipomoea batatas L): Optimization of the Combination of Citric Acid and Tartaric Acid as an Acidifying Agent in Effervescent Tablets of Purple Sweet Potato Extract (Ipomoea batatas L). J Surya Medika [Internet]. 2021Aug.30 [cited 2024Apr.27];7(1):156-72. Available from: https://journal.umpr.ac.id/index.php/jsm/article/view/2651