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  • Title: Effect of fermentation time and drying temperature on volatile compounds in cocoa.
    Author: Rodriguez-Campos J, Escalona-Buendía HB, Contreras-Ramos SM, Orozco-Avila I, Jaramillo-Flores E, Lugo-Cervantes E.
    Journal: Food Chem; 2012 May 01; 132(1):277-88. PubMed ID: 26434291.
    Abstract:
    The effects of fermentation time and drying temperature on the profile of volatile compounds were evaluated after 2, 4, 6, and 8 fermentation days followed by drying at 60, 70 and 80°C. These treatments were compared with dry cocoa controls produced in a Samoa drier and by a sun-drying process. A total of 58 volatile compounds were identified by SPME-HS/GC-MS and classified as: esters (20), alcohols (12), acids (11), aldehydes and ketones (8), pyrazines (4) and other compounds (3). Six days of fermentation were enough to produce volatile compounds with flavour notes desirable in cocoa beans, as well as to avoid the production of compounds with off-flavour notes. Drying at 70 and 80°C after six fermentation days presented a volatile profile similar to the one obtained by sun drying. However, drying at 70°C represents a lower cost. Given the above results, in the present study the optimal conditions for fermentation and drying of cocoa beans were 6days of fermentation, followed by drying at 70°C.
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