Optimization of high-intensity pulsed electric field-assisted extraction of procyanidins from Vitis amurensis seeds using response surface methodologyZhou Yong Dong, Hua Hua Wang, Ming Yue Li, Wei Liu and Tie Hua ZhangE3S Web Conf., 189 (2020) 02029DOI: https://doi.org/10.1051/e3sconf/202018902029