Roasting. Members Homebuilt Roasters. Chemical Reactions Occurring in the Roasting Process. By Carl Staub (sourced from the SCAA Roast Color Classification System developed by Agtron - SCAA in 1995) Many thermal and chemical reactions occur during the roasting process: decarboxylation, dehydration of quinic acid moiety, fractionization, isomerization, polymerization, and complex sugar reactions.
