Padmaningrum, Regina Tutik, and M. Pranjoto Utomo. “CHANGES OF COLOR AND P-KAROTEN RATE IN THE UBI.JALAR (IPOMEA BATATAS, L) FLOWS BLEACHING”. Jurnal Penelitian Saintek, vol. 12, no. 2, Sept. 2007, doi:10.21831/jps.v12i2.5457.