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Valery Allen, R. and Syahfitra, M. 2026. Analisis Komparatif Efisiensi Rendemen Dan Stabilitas Kadar Katekin Ekstrak Gambir (Uncaria Gambir) Menggunanakan Pengepres Hidrolik Dan Pengepres Ulir Skala Industri Kecil: Comparative Analysis of Yield Efficiency and Stability of Catechin Content of Gambir (Uncaria Gambir) Extract Using Hydraulic Press and Screw Press on Small Industrial Scale. Atech-i. 3, 1 (Jan. 2026), 38–47. DOI:https://doi.org/10.55043/atech-i.v3i1.50.