[Retracted] Optimization of Flash Extraction of Akebia trifoliata Seed Oil by the Box-Behnken Response Surface Methodology and Comparison of Oil Yields from Different Origins

Table 1

Factors and horizontal of the Box-Behnken response surface method.

Horizontal	Factors
	Liquid-solid ratio (ml/g)	Extraction voltage (V)	Extraction time (s)
-1	8 : 1	125	60
0	10 : 1	150	90
1	12 : 1	175	120