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Color change profiles after 2 min of array exposure to Columbian Huila green coffee beans roasted for 15 min at 180, 200, 210, 220, 230, and 240 °C. A full digital database is provided in the Supporting Information, Table S2. For display purposes, the color range of these difference maps are expanded from 4 to 8 bits per color (RGB range of 4–19 expanded to 0–255).
