title: Effect of plant matrix and fluid ethanol concentration on supercritical fluid extraction efficiency of schisandrin derivatives.
abstract: An investigation of the effect of plant matrix on the supercritical fluid extraction efficiency of five schisandrin derivatives is reported, exhibiting a great difference with respect to extraction efficiency depending on the matrix. Pure supercritical CO2 at 60 degrees C and 34.0 MPa cannot fully recover schisandrin derivatives from the leaves as much as from the other matrices. Only 36.9% of these compounds are extracted from leaves of Schisandra chinensis by supercritical CO2 in comparison with organic solvent extraction. However, more than 80% of schisandrin derivatives are obtained from both stem and fruit parts. Ethanol addition also shows a different effect depending on plant matrix; that is, CO2 modified with 10% ethanol could enhance the yield of schisandrin derivatives from leaves by four times when compared with that of pure CO2, but it has little effect on both stems and fruits.
authors.affiliation: College of Pharmacy, Seoul National University, Korea.
authors.forename: Y
authors.initials: Y
authors.lastname: Kim
authors.forename: Y H
authors.initials: YH
authors.lastname: Choi
authors.forename: Y W
authors.initials: YW
authors.lastname: Chin
authors.forename: Y P
authors.initials: YP
authors.lastname: Jang
authors.forename: Y C
authors.initials: YC
authors.lastname: Kim
authors.forename: J
authors.initials: J
authors.lastname: Kim
authors.forename: J Y
authors.initials: JY
authors.lastname: Kim
authors.forename: S N
authors.initials: SN
authors.lastname: Joung
authors.forename: M J
authors.initials: MJ
authors.lastname: Noh
authors.forename: K P
authors.initials: KP
authors.lastname: Yoo
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid; D034242:Cyclooctanes; D000431:Ethanol / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry; D007202:Indicators and Reagents; D017705:Lignans / Q000737:chemistry*; D010936:Plant Extracts / Q000032:analysis; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011083:Polycyclic Compounds / Q000737:chemistry*; D012997:Solvents
chemical_list: D034242:Cyclooctanes; D007202:Indicators and Reagents; D017705:Lignans; D010936:Plant Extracts; D011083:Polycyclic Compounds; D012997:Solvents; D002245:Carbon Dioxide; D000431:Ethanol; C011105:schizandrin