Table 2.

Mathematical model constants and statistic parameters determined by each desorption isotherm at 20 °C

Drying temperature of S. fruticosa	Model	Model parameters	Coefficient of determination (R2)	Reduced Chi square (χ2)
50 °C	Halsey	A = 0.047 B = − 7.97	0.993	0.029
	Caurie	r = 0.56	0.984	0.031
		Xws = − 0.38
	Henderson	f = 11.92 n = − 5.88	0.927	0.012
	Smith	A = 0.60 B = 1.92	0.999	0.302
	Oswin	A = 1.36 B = − 0.1	0.964	0.343
60 °C	Halsey	A = 236.17 B = 78.74	0.932	0.000
	Caurie	r = 1.06 Xws = − 4.42	0.983	0.000
	Henderson	f = − 134.17 n = 65.67	0.999	0.000
	Smith	A = − 0.04 B = 1.06	0.872	0.000
	Oswin	A = 1.08 B = 0.0098	0.964	0.638
70 °C	Halsey	A = 0.0249 B = − 0.0124	0.737	0.026
	Caurie	r = 0.69 Xws = − 0.52	0.846	0.015
	Henderson	f = 17.98 n = − 8.83	0.920	0.007
	Smith	A = 0.28 B = 1.42	0.608	0.039
	Oswin	A = 1.28 B = − 0.06	0.831	0.441