Comparison of Powdered Active Compounds Made from Tender Coconut Water Fortified with Vitamin E, Processed by Spray Drying and Freeze Drying, Zulaikhah, Siti Thomas, Ratnawati Ratnawati, Hussaana Atina, and Muhandri Tjahja , Pharmacognosy Journal, December 2022, Volume 14, Issue 6, p.682-686, (2022)