Self-modeling curve resolution techniques applied to comparative analysis of volatile components of Iranian saffron from different regions

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• 作者：Mehdi Jalali-Heravi ; Hadi Parastar ; Heshmatollah Ebrahimi-Najafabadi
• 关键词：Self-modeling curve resolution ; Saffron ; Ultrasonic solvent extraction ; Objective function minimization ; Alternating least square ; Gas chromatography– ; mass spectrometry
• 刊名：Analytica Chimica Acta
• 出版年：2010
• 出版时间：10 March 2010
• 年：2010
• 卷：662
• 期：2
• 页码：143-154
• 全文大小：1044 K

文摘

Volatile components of saffron from different regions of Iran were extracted by ultrasonic-assisted solvent extraction (USE) and were analyzed by gas chromatography–mass spectrometry (GC–MS). Self-modeling curve resolution (SMCR) was proposed for resolving the co-eluted GC–MS peak clusters into pure chromatograms and mass spectra. Multivariate curve resolution-objective function minimization (MCR-FMIN) and multivariate curve resolution-alternating least square (MCR-ALS) were successfully used for this purpose. The accuracy of the qualitative and quantitative results was improved considerably using SMCR techniques. Comparison of the results of saffron from different regions of Iran showed that their volatile components are different from chemical components and relative percentages points of view. Safranal is the main component of all samples. In addition, 4-hydroxy-2,6,6-trimethyl-1-cyclohexene-1-carboxaldehyde (HTCC), 2(5H)-furanone, 2,4,4-trimethyl-3-carboxaldehyde-5-hydroxy-2,5-cyclohexadien-1-one and 2(3H)-furanone, dihydro-4-hydroxy were common in all samples with high percentages. The results proved that combining of SMCR techniques with USE-GC–MS produces a powerful tool for the analysis of the complex samples.