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Anal Chim Acta

Title:		Self-modeling curve resolution techniques applied to comparative analysis of volatile components of Iranian saffron from different regions
Author(s):		Jalali-Heravi M; Parastar H; Ebrahimi-Najafabadi H;
Address:		"Department of Chemistry, Sharif University of Technology, P.O. Box 11155-9516, Tehran, Iran. jalali@sharif.edu"
Journal Title:		Anal Chim Acta
Year:		2010
Volume:		20100118
Issue:		2
Page Number:		143 - 154
DOI:		10.1016/j.aca.2010.01.013
ISSN/ISBN:		1873-4324 (Electronic) 0003-2670 (Linking)
Abstract:		"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"
Keywords:		"Clinical Laboratory Techniques Crocus/*chemistry Cyclohexenes/*analysis Drugs, Chinese Herbal/chemistry Gas Chromatography-Mass Spectrometry/methods Iran Odorants/*analysis Plant Extracts/chemistry Proteome/analysis Spectrometry, Mass, Electrospray Ioniza;"
Notes:		"MedlineJalali-Heravi, Mehdi Parastar, Hadi Ebrahimi-Najafabadi, Heshmatollah eng Netherlands 2010/02/23 Anal Chim Acta. 2010 Mar 10; 662(2):143-54. doi: 10.1016/j.aca.2010.01.013. Epub 2010 Jan 18"