Rapid isolation and characterization of crocins, picrocrocin, and crocetin from saffron using centrifugal partition chromatography and LC–MS - Evangelia Karkoula; Angelis, Apostolis; Koulakiotis, Nikolaos‐Stavros; Gikas, Evangelos; Halabalaki, Maria; Tsarbopoulos, Anthony; Skaltsounis, Alexios‐Leandros (Journal of separation science, 2018)