研究目的
To validate the application of FTIR spectroscopy combined with stepwise multiple linear regression (SMLR) in quantitative analysis of sildenafil citrate in various marketed herbal aphrodisiacs.
研究成果
FTIR spectroscopy combined with SMLR can be an alternative technique for determination of adulterated sildenafil citrate in marketed herbal aphrodisiacs because it has high correlation between actual and predicted with R2 value 1.0, high accuracy and precision with RMSEC value 0.000310913 and PRESS 0.0009191.
研究不足
The study does not mention the limitations explicitly.
1：Experimental Design and Method Selection:
FTIR spectroscopy combined with multivariate calibration of Stepwise Multiple Linear Regression (SMLR) was used for quantification of sildenafil citrate in marketed herbal aphrodisiacs.
2：Sample Selection and Data Sources:
Six different herbal products, which claimed to enhance sexual activity were purchased from local pharmacies in central java and special region of Yogyakarta.
3：List of Experimental Equipment and Materials:
FTIR spectrophotometer Spectrum-Two (Perkin-Elmer, Ohio, US), equipped with deuterated triglycine sulphate (DTGS) detector and Dynascan? interferometer.
4：Experimental Procedures and Operational Workflow:
The FTIR spectra of all samples were scanned using an FTIR spectrophotometer Spectrum-Two (Perkin-Elmer, Ohio, US), equipped with deuterated triglycine sulphate (DTGS) detector and Dynascan? interferometer.
5：Data Analysis Methods:
The multivariate calibration of SMLR for the correlation between actual value of adulterated sildenafil citrate and FTIR predicted value was performed using Minitab 17.
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