Color Kinetics of Aonla Shreds with Amalgamated Blanching During Drying

Figures & data

Table 1 The results of analysis of variance for color values

		F values
Source	df	L	a	B
Treatment	4	31.31*	33.99*	94.35*
Time	3	143.42*	70.76*	42.62*
Treatment * Time	12	7.69*	6.4*	2.73*
Error	40
Total	60
*Significant at p < 0.05.

Figure 1 ‘L’ value color parameter as a function of time during drying (color figure available online).

Figure 2 ‘a’ value color parameter as a function of time during drying (color figure available online).

Figure 3 ‘b’ value color parameter as a function of time during drying (color figure available online).

Table 2 Kinetic parameters for color evaluation during drying

		Zero order					First order
Treatment	Parameter	C 0	k	RMSE	MRE	R ^2	C 0	k	RMSE	MRE	R ^2
T 0	L	68.96	0.11	1.095	0.038	0.99	69.20	0.0018	1.266	0.043	0.98
	a	−7.82	0.09	0.518	3.412	0.99	—	—	—	—	—
	b	18.04	0.02	0.532	0.062	0.95	18.07	0.001	0.951	0.096	0.95
	ΔE	0.77	0.15	0.37	0.14	0.99	2.73	0.016	2.03	0.34	0.97
T 1	L	66.64	0.07	1.235	0.038	0.96	66.68	0.001	1.373	0.042	0.96
	a	−5.99	0.04	0.87	0.44	0.91	—	—	—	—	—
	b	21.41	0.06	1.012	0.106	0.91	21.58	0.004	1.874	0.230	0.93
	ΔE	0.98	0.08	0.91	0.29	0.99	2.71	0.01	4.79	1.01	0.97
T 2	L	66.26	0.07	2.297	0.059	0.88	66.37	0.001	2.550	0.080	0.88
	a	−6.31	0.04	0.69	0.33	0.88	—	—	—	—	—
	b	22.09	0.03	1.678	0.154	0.82	22.12	0.02	2.331	0.226	0.82
	ΔE	0.48	0.089	0.79	0.22	0.98	1.71	0.015	1.36	0.40	0.95
T 3	L	67.67	0.04	0.641	0.018	0.97	67.69	0.0006	2.561	0.085	0.97
	a	−8.14	0.03	0.95	0.61	0.82	—	—	—	—	—
	b	15.69	0.03	0.210	0.031	0.99	15.76	0.0025	0.658	0.108	0.99
	ΔE	2.42	0.04	0.22	0.06	0.99	3.01	0.008	0.51	0.15	0.97

Table 3 Values of derived color measures of aonla shreds during drying

Treatment	DE	Chroma	Hue	BI
T 0	17.58	15.8	78	36.64
T 1	11.29	14.3	264	25.14
T 2	10.92	17.37	265	33.49
T 3	7.58	12.63	248	14.57

Figure 4 Residual plot of ΔE (color change) for shreds (color figure available online).

Figure 5 Variation of ΔE (color change) as a function of time during drying (color figure available online).