Optimization of ultrasonic-assisted extraction of inulin from Jerusalem artichoke Lina Yang, Hongyun Zhang, Jinghang Huang, Yafan Zhao, Danshi Zhu and He Liu E3S Web Conf., 78 (2019) 02007 Published online: 15 January 2019 DOI: 10.1051/e3sconf/20197802007