title: The sensitive fluorimetric method for the determination of curcumin using the enhancement of mixed micelle.
abstract: Curcumin (C21H20O6) is a natural antioxidant, which is considered to be a very useful compound in health matters, and is employed in the treatment of cardiovascular and arthritic illnesses. It is found that the fluorescence of curcumin is greatly enhanced by mixed micelle of sodium dodecyl benzene sulfonate (SDBS) and cetyltrimethylammonium bromide (CTAB) surfactants. Based on this, a sensitive fluorimetric method for the determination of curcumin in aqueous solution is proposed. In the HOAc-NaOAc buffer, the fluorescence intensity of curcumin is proportional to the concentration of curcumin in the range of 0.00020-0.74 microg/mL and the detection limit is 0.017 ng/mL. The synthetic and actual samples are satisfactorily determined. In addition, the interaction mechanism is also studied.
authors.affiliation: Key Laboratory of Colloid and Interface Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Ministry of Education, Jinan, 250100, PR China.
authors.forename: Feng
authors.initials: F
authors.lastname: Wang
authors.forename: Xia
authors.initials: X
authors.lastname: Wu
authors.forename: Fei
authors.initials: F
authors.lastname: Wang
authors.forename: Shufang
authors.initials: S
authors.lastname: Liu
authors.forename: Zhen
authors.initials: Z
authors.lastname: Jia
authors.forename: Jinghe
authors.initials: J
authors.lastname: Yang
mesh_terms: D000085:Acetates / Q000737:chemistry; D000975:Antioxidants / Q000032:analysis* / Q000737:chemistry*; D001557:Benzenesulfonates / Q000737:chemistry; D002021:Buffers; D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry; D003474:Curcumin / Q000032:analysis* / Q000737:chemistry*; D005470:Fluorometry / Q000379:methods; D006863:Hydrogen-Ion Concentration; D008823:Micelles; D015394:Molecular Structure; D012680:Sensitivity and Specificity; D012996:Solutions / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D013501:Surface-Active Agents / Q000737:chemistry; D014867:Water / Q000737:chemistry
chemical_list: D000085:Acetates; D000975:Antioxidants; D001557:Benzenesulfonates; D002021:Buffers; D002593:Cetrimonium Compounds; D008823:Micelles; D012996:Solutions; D013501:Surface-Active Agents; D014867:Water; C001114:dodecylbenzenesulfonic acid; D003474:Curcumin; D000077286:Cetrimonium