Microwave Assisted Extraction of Defatted Roselle (Hibiscus sabdariffa L.) Seed at Subcritical Conditions with Statistical Analysis

Table 4

The results of experimental verification.

	Extraction time	Microwave power	Solvent/solid ratio	Extraction yield	Total phenolic content	Total flavonoid content
	(min)	(W)	(mL/g)	(%)	(mg GAE/g)	(mg QE/g)
Predicted	10	300	97.7178	60.6212	16.6702	12.2640
Actual	10	300	97.7135	65.0367	18.2244	6.4524

The maximum temperature and pressure recorded are 163°C and 18 bar, respectively.