Citation: Yan Ping Li, Hao Wu, Li Ming Du. Study on the inclusion interactions of berberine hydrochloride and cucurbit[7] by spectrofluorimetry[J]. Chinese Chemical Letters, ;2009, 20(3): 322-325. doi: 10.1016/j.cclet.2008.10.045 shu

Study on the inclusion interactions of berberine hydrochloride and cucurbit[7] by spectrofluorimetry

Analytical and Testing Center, Shanxi Normal University, Linfen 041004, PR China

Received Date: 17 July 2008

Fund Project: This research was supported by the Natural Science Foundation of Shanxi (No. 2007011027).

The inclusion interaction between berberine hydrochloride (BRH) and cucurbit[7] (CB[7]) has been studied by spectrofluorimetry.The result showed that CB[7] interaction with BRH to form a stable inclusion complex with an association constant of 9.57×10⁴ L/mol and the fluorescence intensity of the complex was enhanced in 17 times higher than that of the studied drug itself.Based on the significant enhancement of fluorescence intensity of BRH in inclusion complex, a spetrofluorimetric method with high sensitivity and selectivity was developed for the determination of BRH in aqueous solution. The linear range of the method was 3.2-2×10³ ng/mL with a detection limit of 1.1 ng/mL. The proposed procedure could be applied successfully to determination of BRH remained in pharmaceutical dosage forms, spiked human plasma and urine with satisfactory results.
- Berberine hydrochloride,
- Cucurbit[7],
- Spectrofluorimetry,
- Inclusion interaction
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