Dynamics of volatile compounds and flavor precursors during spontaneous fermentation of fine flavor Trinitario cocoa beans

Dynamics of volatile compounds and flavor precursors during spontaneous fermentation of fine flavor Trinitario cocoa beans

Hayley Rottiers, Daylan Amelia Tzompa Sosa, Ann De Winne, Jenny Ruales, Jessika De Clippeleer, Ilse De Leersnyder, Jocelyn De Wever, Helena Everaert, Kathy Messens, Koen Dewettinck

Fine flavor cocoa is worldwide renowned to produce origin chocolates with special aromas, e.g. fruity or floral, in addition to its chocolate aroma. This research aims to elucidate fine flavor dynamics during fermentation by analyzing the sugar, free amino acid (FAA) and volatile profile. Ecuadorian Trinitario beans (Sacha Gold) were sampled after 0, 18, 24, 48 and 66 h of spontaneous fermentation. The unfermented beans contained significant sucrose, glutamic acid and asparagine amounts while the fermented beans (66 h) contained more flavor precursors, e.g. glucose, fructose, hydrophobic and other FAA. Forty-one volatiles were identified, including 13 fruity- and 12 floral-like, derived from various metabolic pathways. Whereas the level of fatty acid-derived fruity volatiles decreased, the amount of amino acid-derived fruity and floral volatiles increased and floral terpenes remained stable. Some fine …

Springer Berlin Heidelberg

2019

https://scholar.google.com/citations?view_op=view_citation&hl=en&user=EZuX1N8AAAAJ&pagesize=80&citation_for_view=EZuX1N8AAAAJ:H8haQKU-3ZsC

English