Simultaneously Extraction of Caffeine and Chlorogenic Acid from Coffea canephora Bean using Natural Deep Eutectic Solvent-Based Ultrasonic Assisted Extraction, Syakfanaya, Adisya Miftah, Saputri Fadlina Chany, and Mun?im Abdul , Pharmacognosy Journal, February 2019, Volume 11, Issue 2, p.267-271, (2019)