maillard reaction

What Is A Caramelized Coffee Bean?

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Light and medium roast coffees are produced between first and second crack. After 15 minutes the beans grow quiet and begin to smoke. Having now caramelized, the bean sugars start to carbonize The surface is very oily and the coffee bean will darken further as the oils continue to rise to the surface. What is … Read more

What Happen In Roasting?

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After first crack, the roast changes from an endothermic reaction (the beans absorb heat from the drum) to an exothermic one (the beans release heat). During this stage, the physical transformations continue – beans increase in porosity, oils migrate to the walls of the cell, and the color darkens Which of the chemical reaction occur … Read more