Application of thin-layer chromatography image analysis technique in quantitative determination of sphingomyelin
2016
A sensitive and convenient method for sphingomyelin determination was developed based on thinlayer chromatography (TLC) and image-processing analysis. The mobile phase composition, detection and quantification conditions were systematically investigated through several trials. The molybdenum blue reaction allowed specific detection of the phospholipid with a high sensitivity and a wide linear range. Digital images of TLC plate chromatograms were captured with flatbed scanner and converted into peak chromatograms using TLSee® software and quantitative analysis was conducted. The linearity, sensitivity, accuracy and precision of the system were evaluated. The limits of detection and quantification were 0.5 and 1.7 μg/spot, respectively. Separation of the mixture consisting of sphingomyelin, phosphatidylcholine, and phosphatidylethanolamine was also carried out.
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