Antioxidant activity and gel formulation of Areca catechu fractionation - Supriadi, Supriadi; Brata, Andy; Yuliawati, Yuliawati; Yulion, Rizky; Purwantiningsih, Purwantiningsih (Sekolah Tinggi Ilmu Kesehatan Harapan Ibu Jambi, 2024)