Chemical investigation of L. fischeri afforded two new eremophilenolides. which were identified as 6 beta-methoxy-8 beta-hpdroxy-eremophil-7(11)-en-12,8 alpha-olide 1; 6-oxo-8 beta-hydroxy-eremophil-7(11)-en- 12.8 alp...Chemical investigation of L. fischeri afforded two new eremophilenolides. which were identified as 6 beta-methoxy-8 beta-hpdroxy-eremophil-7(11)-en-12,8 alpha-olide 1; 6-oxo-8 beta-hydroxy-eremophil-7(11)-en- 12.8 alpha-olide 2.展开更多
A novel eremophilane dimer,named fischelactone（1）,was isolated from the roots of Ligularia fischeri.Complete structural elucidation of this compound was performed by HRESIMS,IR,1D NMR and 2D NMR（;H-;H COSY,HMBC,HMQ...A novel eremophilane dimer,named fischelactone（1）,was isolated from the roots of Ligularia fischeri.Complete structural elucidation of this compound was performed by HRESIMS,IR,1D NMR and 2D NMR（;H-;H COSY,HMBC,HMQC and NOESY） data.展开更多
A hydroponic cultivation system was established to improve the nutraceutical properties of Ligularia fischeri(Ledeb.) Turcz, during which nutrient uptake by the plant from nutrient solution was measured using inductiv...A hydroponic cultivation system was established to improve the nutraceutical properties of Ligularia fischeri(Ledeb.) Turcz, during which nutrient uptake by the plant from nutrient solution was measured using inductive coupled plasma-atomic emission spectroscopy(ICP-AES).Based on the obtained data, the uptake of macro and micro elements per gram of fresh weight was calculated. The uptake of macro-elements of NH_4^+-N,NO_3^--N, K, S, P, Ca,and Mg were 1,62,4.27, 8.41,1.19, 2.59, 2,79, and 0.84 mg·g^(-1) FW and micro-elements of B, Fe, Mn, Mo, Cu, and Zn were 9.91,22.31,25.73,2.51,2.91, and 5.07 μg·g^(-1) FW. Moreover, the effects of cultivation systems on growth and phytochemical composition of L.fischeri were compared. The greatest biomass was observed in the hydroponic cultivation system with continuous circulation nutrient solution compared to natural soil and Tosilee media based culture systems. The recirculated hydroponic system significantly increased the total phenol contents of the leaf, petiole, and root extracts by 17.6%, 30.60%, and 20.9% more compared to the soil grown. The recirculated hydroponic system treatment significantly increased the total antioxidant capacity of root extracts by 55.9% more compared to the soil treatment. Based on the contents of elements, total phenolic and flavonoid, it was concluded that hydroponic cultivation system is the optimal method to enhance medicinal value.展开更多
文摘Chemical investigation of L. fischeri afforded two new eremophilenolides. which were identified as 6 beta-methoxy-8 beta-hpdroxy-eremophil-7(11)-en-12,8 alpha-olide 1; 6-oxo-8 beta-hydroxy-eremophil-7(11)-en- 12.8 alpha-olide 2.
基金financially supported by State Key Laboratory of Applied Organic Chemistry,Lanzhou University, China and Natural Science Foundation of Shandong Province,China(No.Y2008D23).
文摘A novel eremophilane dimer,named fischelactone（1）,was isolated from the roots of Ligularia fischeri.Complete structural elucidation of this compound was performed by HRESIMS,IR,1D NMR and 2D NMR（;H-;H COSY,HMBC,HMQC and NOESY） data.
基金supported from the grants of the BK21 Plus program (Brain Korea 21) of the Ministry of Education, Republic of Korea
文摘A hydroponic cultivation system was established to improve the nutraceutical properties of Ligularia fischeri(Ledeb.) Turcz, during which nutrient uptake by the plant from nutrient solution was measured using inductive coupled plasma-atomic emission spectroscopy(ICP-AES).Based on the obtained data, the uptake of macro and micro elements per gram of fresh weight was calculated. The uptake of macro-elements of NH_4^+-N,NO_3^--N, K, S, P, Ca,and Mg were 1,62,4.27, 8.41,1.19, 2.59, 2,79, and 0.84 mg·g^(-1) FW and micro-elements of B, Fe, Mn, Mo, Cu, and Zn were 9.91,22.31,25.73,2.51,2.91, and 5.07 μg·g^(-1) FW. Moreover, the effects of cultivation systems on growth and phytochemical composition of L.fischeri were compared. The greatest biomass was observed in the hydroponic cultivation system with continuous circulation nutrient solution compared to natural soil and Tosilee media based culture systems. The recirculated hydroponic system significantly increased the total phenol contents of the leaf, petiole, and root extracts by 17.6%, 30.60%, and 20.9% more compared to the soil grown. The recirculated hydroponic system treatment significantly increased the total antioxidant capacity of root extracts by 55.9% more compared to the soil treatment. Based on the contents of elements, total phenolic and flavonoid, it was concluded that hydroponic cultivation system is the optimal method to enhance medicinal value.
