Research Reveals Roasted Coffee Follows A “Universal Color Curve” – CoffeeTalk

New research from the University of California, Davis’ Coffee Center reveals that coffee beans follow a “universal color curve” when plotted in the L*a*b* color space. This research, published in Scientific Reports, provides insights into color measurements and offers significant implications for the coffee industry by providing a precise, quantitative standard for defining roast levels. The study, published in Scientific Reports, reveals that coffee bean color always maps onto a “universal color curve” when plotted in the L*a*b* color space, regardless of origin and roast profile. The coffee beans consistently exhibited the same color values at significant roast milestones, including color change, first crack, and second crack. The findings provide insight into color measurements and offer significant implications for the coffee industry by providing a precise, quantitative standard for defining roast levels.

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