PENETAPAN KADAR FENOL TOTAL DAN KATEKIN DAUN TEH HITAM DAN EKSTRAK ASETON TEH HITAM DARI TANAMAN CAMELLIA SINENSIS VAR. ASSAMICA - Paramita, N. L. P. V. (Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia, 2020)