Bhumibhamon, O. and Jinda, J. (1997) “Cocoa Fermentation : Effect of Enzyme Pectinase on Natural Cocoa Fermentation”, Agriculture and Natural Resources. Bangkok, Thailand, 31(2), pp. 206–211. available at: https://li01.tci-thaijo.org/index.php/anres/article/view/240820 (accessed: 18 September 2026).