Physicochemical and phytochemical standardization, and antibacterial evaluation of Cassia alata leaves from different locations in Indonesia oleh Marissa Angelina, Ainul Mardhiyah, Rizna Triana Dewi, Sofa Fajriah, Nusaibah Muthiah, Yasmin Ekapratiwi, Indah D. Dewijanti, Sukirno, Jamilah, Sri Hartati