S. Oberparleiter et G. Ziegleder, AMYL ALCOHOLS AS COMPOUNDS INDICATIVE OF RAW COCOA BEAN QUALITY, ZEITSCHRIFT FUR LEBENSMITTEL-UNTERSUCHUNG UND-FORSCHUNG A-FOOD RESEARCH AND TECHNOLOGY, 204(2), 1997, pp. 156-160
Amyl alcohols were isolated from raw cocoa beans by steam distillation
and quantified by means of gas chromatography. Concentration ratios b
etween primary and secondary amyl alcohols and between alcohols, aldeh
ydes and acetates were calculated. These ratios indicate the fermentat
ion degree and possible staling of cocoa beans. Hence, flavour quality
of raw cocoa beans may be measured and the method used for industrial
quality control.