Ultrasound‐Assisted Natural Deep Eutectic Solvents as Separation‐Free Extraction Media for Hydroxytyrosol from Olives. - Liang, Yihong; Pan, Zuchen; Chen, Zhengjian; Fei, Yuqing; Zhang, Jiliang; Yuan, Jumao; Zhang, Ling; Zhang, Jiaheng (ChemistrySelect, 2020)