“…By report, several methods have been applied for extracting EOs, namely steam distillation (SD) and supercritical fluid extraction-CO 2 (SFE-CO 2 ), and SD as the common method is recorded on Chinese pharmacopeia, while several studies have quantified flavonoids in Citrus herbs using thin-layer chromatography (TLC), HPLC-UV, HPLC-DAD, HPLC-ECD, HPLC-MS, and CE-ECD, primarily focusing on the determination of flavonoids in fruits, juices, or CRP of different Citrus species (Camarda, Di Stefano, Del Bosco, & Schillaci, 2007;Careri, Elviri, Mangia, & Musci, 2000;Liu et al, 2013;Peng, Liu, & Ye, 2006;Sahraoui et al, 2011;Wang & Luo, 1989;Zheng et al, 2009). In recent studies, lots of attention is being paid to flavonoids because of its anticancer, antioxidant, anticonvulsant, and anti-inflammatory properties (Chang et al, 2015;Devi et al, 2015;Dimpfel, 2006;Fu et al, 2017), whereas few on volatile oils which have abundantly valid biological activities on CRP (Duan et al, 2016;Yi, Dong, Liu, Yi, & Zhang, 2015). So far, there were a group of analyses of flavonoids including constituents and contents, and the results indicated obvious differences in CP and GCP (Lin, Li, Ho, & Lo, 2012;Liu et al, 2013;Xing, Zhao, Zhang, & Li, 2017;Zhang et al, 2012;Zheng et al, 2009Zheng et al, , 2013.…”