“Fermentation Process of Cocoa Based on Optimum Condition of Pulp PectinDepolymerization by Endogenous Pectolityc Enzymes” (2010) Pelita Perkebunan (a Coffee and Cocoa Research Journal), 26(2). doi:10.22302/iccri.jur.pelitaperkebunan.v26i2.130.