Quantification of Chlorogenic Acid and Vanillin from Coffee Peel Extract and its Effect on α-Amylase Activity, Immunoregulation, Mitochondrial Oxidative Stress, and Tumor Suppresso... oleh Heba Khalil Alyahya, Pandurangan Subash-Babu, Ahmad Mohammad Salamatullah, Khizar Hayat, Nawal Albader, Mohammed Saeed Alkaltham, Mohammed Asif Ahmed, Shaista Arzoo, Mohammed Bourhia