Rheological Properties of Cabbage Pulp

Figures & data

Figure 1 Production of cabbage pulp from fresh cabbage.

Figure 2 Effect of ln on the lnηof cabbage pulp at different concentrations (a) 20°C, and (b)50°C. °Brix level: (△)6°Brix, (▲)5 °Brix, (□)4°Brix, and (■)3°Brix.

Table 1 Influence of temperature and concentration on Power law parameters

T/°C	°Brix	n	k/Pa· s^n	r ^2
20	3	0.305±0.012	54.5±0.9	0.9775
	4	0.298±0.009	83.8±1.2	0.9669
	5	0.312±0.010	99.8±2.2	0.9692
	6	0.276±0.007	145.6±3.4	0.9706
30	3	0.290±0.009	48.4±1.3	0.9456
	4	0.310±0.011	69.1±1.6	0.9442
	5	0.300±0.008	86.5±1.9	0.9537
	6	0.300±0.010	130.3±1.7	0.9541
40	3	0.318±0.013	42.2±1.2	0.9299
	4	0.304±0.005	61.9±1.1	0.9378
	5	0.301±0.007	81.3±1.6	0.9654
	6	0.294±0.008	115.4±2.5	0.9485
50	3	0.280±0.012	37.6±1.1	0.9543
	4	0.330±0.009	54.3±1.3	0.9580
	5	0.230±0.007	77.4±1.7	0.9299
	6	0.220±0.008	99.7±1.6	0.8906

Figure 3 Effect of shear rate on the shear stress of cabbage pulp at different concentrations (a) 20°C, and (b) 50°C.°Brix level: (△)6°Brix, (▲)5°Brix, (□)4°Brix, and (■)3°Brix.

Table 2 Regression parameters for different rheological models at 50°C

	HB model				Casson model
°Brix	σ0/Pa	k/Pa·s^n	n	r ^2	σ0/Pa	η0/Pa·s	r ^2
3	24.28	10.87	0.61	0.9173	24.91	1.07	0.9989
4	32.64	17.59	0.65	0.9056	34.34	1.53	0.998
5	52.92	15.87	0.66	0.9084	47.68	1.3	0.9979
6	69.10	13.18	0.78	0.9388	71.26	1.4	0.9952

Table 3 The combined effect of temperature and soluble solids on the apparent viscosity of cabbage pulp [fitted model Eq. (4)]. apparent viscosity of cabbage pulp [fitted model Eq. (4)]

	η1/Pa.s	a 1	Ea/kJ/mol	r ^2
1.001	0.017	1.167	12.644	0.8776
1.26	0.026	1.168	12.323	0.8735
1.584	0.034	1.153	11.877	0.8770
1.995	0.045	1.164	11.608	0.9077
2.51	0.062	1.155	11.155	0.9111
3.162	0.101	1.151	10.257	0.9222
3.98	0.129	1.134	10.022	0.9204
5.012	0.236	1.130	8.868	0.9253
6.308	0.347	1.156	8.387	0.9277
7.947	0.545	1.136	7.628	0.9268
9.989	0.830	1.239	7.039	0.9744

Table 4 The combined effect of temperature and soluble solids on the apparent viscosity of cabbage pulp [fitted model Eq. (5)]

	η2(Pa s)	a 2	Ea(kJ/mol)	r ^2
1.001	0.029	0.271	12.644	0.8826
1.26	0.042	0.272	12.323	0.8803
1.584	0.056	0.268	11.877	0.8831
1.995	0.074	0.270	11.608	0.9133
2.51	0.101	0.269	11.155	0.9185
3.162	0.165	0.267	10.257	0.9244
3.98	0.210	0.263	10.022	0.9253
5.012	0.388	0.262	8.868	0.9265
6.308	0.567	0.267	8.387	0.9261
7.947	0.895	0.263	7.628	0.9264
9.989	1.366	0.285	7.039	0.9640