PENGARUH VARIASI pH DAN LAMA PEREBUSAN KACANG PANJANG (Vigna Sesquipedalis (L) fruhw) TERHADAP KADAR ASAM KOLAT DAN ASAM DEOKSIKOLAT PADA FESES HEWAN COBA (Rattus norvegicus L) (THE EFFECT OF pH VARIATION AND LENGTH BOILING TIME OF YARD-LONG BEAN (Vigna S - Rizkiyanto, Rizkiyanto; Department of Chemistry, Faculty of Mathematics and Natural sciences State University of Surabaya Jl. Ketintang Surabaya (60231), Telp. 031-8298761 (UNESA Journal of Chemistry, 2013)