Table 3 Physical characteristics of raw coffee samples

Sample name	Moisture content (%)	Bulk density (g/cm3)	True density (g/cm3)	Color
				L*	a*	b*
				WRS	8.3±0.06ef	0.674±0.00a	1.27±0.01a	70.9±0.6c	0.8±0.1ef	13.5±0.2e
WRT	10.2±0.01a	0.676±0.01a	1.27±0.00a	72.1±0.6a	0.6±0.1g	14.3±0.4d
WRB	8.4±0.020e	0.671±0.00ab	1.27±0.01a	71.7±0.8ab	0.9±0.1de	14.7±0.4d
SKK	8.3±0.03f	0.672±0.00ab	1.26±0.01a	71.3±0.6bc	0.9±0.1d	14.7±0.2d
SKN	8.1±0.02g	0.669±0.00ab	1.26±0.01a	70.9±0.3c	0.8±0.1ef	14.7±0.5d
NGK	7.7±0.04i	0.675±0.00a	1.27±0.02a	68.4±0.6e	1.6±0.1b	16.5±0.4a
NRL	8.9±0.06d	0.681±0.01a	1.27±0.01a	69.7±0.8d	0.8±0.1f	15.5±0.4c
ERW	8.0±0.03h	0.675±0.01a	1.26±0.01a	71.6±0.6ab	1.1±0.1c	14.6±0.3d
ETH	9.9±0.09b	0.660±0.01b	1.26±0.01a	71.6±0.9ab	0.5±0.1h	14.6±0.6d
BRA	9.5±0.04c	0.644±0.02c	1.19±0.02b	66.5±0.4f	1.7±0.1a	16.0±0.4b

All values are means ± standard deviations of at least three measurements.
Values with different superscripts in the same column are significantly different (p<0.05).