Cascade Control of Coffee Roasting Degree in a Spouted Bed Batch Process Based on a Real-Time Imaging Analysis

Table 1

Mean colour attained in the final product for medium and dark coffee.

Roasting degree	Statistics
Medium roasting	Mean	23.41  0.22	8.28  0.49	12.15  0.67
	STD	0.21	0.66	0.64
Dark roasting	Mean	17.44  0.48	6.32  0.28	8.22  0.40
	STD	0.35	0.27	0.38