The interaction of beta-cyclodextrin with etoposide studied by fluorescence spectroscopy / 药学学报
Acta Pharmaceutica Sinica
;
(12): 1416-1420, 2009.
Article
in Chinese
| WPRIM
| ID: wpr-344060
ABSTRACT
The fluorescence spectroscopy and UV spectroscopy have been used to monitor the inclusion phenomena of VP-16 with beta-cyclodextrin (beta-CD), together with studies concerning the effects of reaction time, temperature and concentration on this behavior. The results show that the fluorescence intensity increased when VP-16 and beta-CD forming a 1 1 inclusion complex, which indicate that beta-CD has fluorescence sensitizing effect on the VP-16. At 22 degrees C, the inclusion constant was 2.63 x 10(5) L x mol(-1) at pH 7.0. VP-16 has maximum emission wavelength at 316 nm under the optimum conditions. According to this, the quantitative micro-detection method of VP-16 by fluorescence spectrometry was established. The linear regression equation was y = 1.107 89 x 10(70 x + 95.898 1, with a correlation coefficient of 0.999 9. The detection limit was 2.094 x 10(-7) mol x L(-1).
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Spectrometry, Fluorescence
/
Spectrophotometry, Ultraviolet
/
Temperature
/
Linear Models
/
Chemistry
/
Beta-Cyclodextrins
/
Drug Interactions
/
Etoposide
/
Hydrogen-Ion Concentration
Language:
Chinese
Journal:
Acta Pharmaceutica Sinica
Year:
2009
Type:
Article
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