Journal of Chemistry

Research Article

Process Optimization of Ultrasonic-Assisted Extraction of Arabinogalactan from Dihydroquercetin Extracted Residues by Response Surface Methodology and Evaluation of Its Antioxidant Activity

The Box-Behnken design matrix to screen important variables, and the extraction yields of crude polysaccharides.


Run	(Coded value) Factor	(Coded value) Factor	(Coded value) Factor	Predicted response	Actual response
Run	Liquid-solid ratio (mL/g)	Ultrasound irradiation time (min)	Extraction temperature (°C)	Yield (%)	Yield (%)

1	40	(0) 30	(−1) 40	11.02	11.16
2	(0) 30	(0) 30	(0) 50	9.75	9.88
3	(−1) 20	(−1) 20	(0) 50	8.84	9.04
4	40	40	(0) 50	9.73	9.53
5	(−1) 20	(0) 30	60	9.85	9.71
6	(−1) 20	40	(0) 50	9.85	10.14
7	40	(−1) 20	(0) 50	10.88	10.59
8	(0) 30	(−1) 20	(−1) 40	10.34	10.49
9	(0) 30	(−1) 20	60	8.65	8.60
10	(0) 30	(0) 30	(0) 50	9.75	9.19
11	(0) 30	(0) 30	(0) 50	9.75	9.78
12	(0) 30	40	60	10.06	9.91
13	(0) 30	40	(−1) 40	8.79	8.84
14	(0) 30	(0) 30	(0) 50	9.75	9.90
15	(−1) 20	(0) 30	(−1) 40	9.45	9.10
16	(0) 30	(0) 30	(0) 50	9.75	9.98
17	40	(0) 30	60	10.20	10.54