The polyphenols in cocoa beans could contribute to about 12-18% of the dry weight of the whole bean [45]. Three groups of polyphenols can be distinguished namely the catechins (or also known as flavan-3-ols), anthocyanins and proanthocyanidins. Fermentation and drying affect the concentration of these polyphenols mainly due to the enzymatic browning reactions. However, some pretreatment factors should be taken into account as this would affect the extent of the enzymatic reactions occurring during processing. Table 4 summarizes the effect of fermentation and drying on polyphenol content.