Drying Rate and Product Quality Evaluation of Roselle (Hibiscus sabdariffa L.) Calyces Extract Dried with Foaming Agent under Different Temperatures

Table 5

The Arrhenius parameters for antioxidant activity degradation.

T (°C)	Nonfoam				Foam
	(min^−1)		0^6	Ea; (kJ mol^−1)	(min^−1)		0^1	Ea; (kJ mol^−1)
40	0.00094	0.85	5.9	58.42	0.0009	0.93	3.1	27.34
50	0.0025	0.94			0.001	0.97
60	0.0036	0.90			0.0017	0.89