Application of Multivariate Calibration Methods in Assessment of the Components Responsible for Antimicrobial Activity of Walnut Leaf Using Liquid Chromatography-Mass Spectrometry Technique

Document Type : Research Article

Authors

1 Department of Analytical Chemistry, Faculty of Chemistry, University of Kashan, Kashan, I.R. IRAN

2 Department of Chemistry, Faculty of Science, Urmia University, Urmia, I.R. IRAN

3 Department of Cell and Molecular Biology, Faculty of Chemistry, University of Kashan, Kashan, I.R. IRAN

Abstract

Walnut leaf has good antioxidant, antifungal and antimicrobial properties. In this study, a walnut leaf from different regions of Iran was collected and then its extract was analyzed by high-performance liquid chromatography-mass spectrometry (HPLC-MS). Antimicrobial properties of walnut leaf extract were evaluated by gram-positive bacteria of Staphylococcus aureus (ATCC29737) and Bacillus subtilis (ATCC 6633), gram-negative bacteria of Escherichia coli (ATCC10536) and Candida albicans yeast (ATCC10231) and by some linear multivariate calibration techniques, the peaks potentially responsible for the antimicrobial activity were indicated. The results of these techniques were displayed as regression graphs, which peaks with negative regression coefficients cause antimicrobial properties. Independent component regression was preferred to exhibit the potential antimicrobial active compounds in samples because of simplicity, better interpretation of regression coefficients, and its high repeatability. Finally, High Performance Liquid Chromatography -Mass Spectrometry (HPLC-MS) was used to indicate the structure of chemical components, which were responsible for antimicrobial activity.

Keywords


‌[3] Martens H., Martens M., “Multivariate Analysis of Quality an Introduction”, John Wiley, Chichester (2001).
[4] Draper N.R., Smith H., “Applied Regression Analysis”, John Wiley, New York (1981).
[5] Centner V., Massart D.L., de Noord O.E., de Jong S., Vandeginste B M, Sterna C, Elimination of Uninformative Variables for Mutivariate Calibration, Anal. Chem., 68: 3851–3858 (1996).
[6] Vandeginste B.G.M., Massart D.L., Buydens L.M.C., De Jong S., Lewi P.G., Smeyers-Verbeke J., “Handbook of Chemometrics and Qualimetrics”: Part B, Elsevier, Amsterdam (1998).
[7] Geladi P., Kowalski B.R., Partial least-squares regression: a tutorial, Anal. Chim. Acta, 185: 1-17 (1986).
[8] Sjoblom J., Svensson O., Josefson M., Kullberg H., Wold S., An Evaluation of Orthogonal Signal Correction Applied to Calibration Transfer of Near Infrared Spectra, Chemom. Intell. Lab. Syst., 44: 229–244 (1998).
[9] Andersson C.A., Direct Orthogonalazation, Chemom Intell Lab Syst, 47(1): 51–63 (1999).
[10] Trygg J., Wold S., Orthogonal Projections to Latent Structures (O‐PLS), J. Chemometr., 16: 119–128 (2002).
[11] Eriksson L., Byrne T., Johansson E., Trygg J., Vikström C., "Multi- and Megavariate Data Analysis. Part I, Basic Principles and Applications", Umetrics AB, Umea, 425 (2006).
[12] Chen J., Wang X.Z., A New Approach to Near-Infrared Spectral Data Analysis Using Independent Component Analysis, J. Chem.Inf. Comput. Sci., 41: 992–1001(2001).
[13] Durbin J., Watson G.S., Testing for Serial Correlation in Least Squares Regression, Biometrika, 37: 409-428 (1950).
[14] Zhang Y., Zhang Y., Complex Process Monitoring Using Modified Partial Least Squares Method of Independent Component Regression, Chemom. Intell. Lab. Syst., 98: 143−148 (2009).
[16] Jalili A., Sadeghzade A, Comparative Phenolic Profile of Persian Walnut (Juglans Regia L.) Leaves Cultivars Grown in Iran, J. Biochem. Res., 6: 33-38 (2012).
[17] Noumi E., Snoussi M., Trabelsi N., Ksouri R., Hamdaoui G., Bouslama L., Bakhrouf A., Antioxidant Activities and Reversed Phase -High Performance Liquid Chromatography (RP-HPLC) Identification of Polyphenols in the Ethyl Acetate Extract of Tunisian Juglans Regia L.Treated Barks, J. Med. Plants Res., 6: 1468-1475 (2012).
[18] Regueiro J., Sánchez-González C., Vallverdú-Queralt A., Simal-Gándara J., Lamuela-Raventós R., Izquierdo-Pulido M., Comprehensive Identification of Walnut Polyphenols by Liquid Chromatography Coupled to Linear Ion Trap–Orbitrap Mass Spectrometry, Food Chem., 152: 340-348 (2014).
[19] Tistaert C., Dejaegher B., Nguyen Hoai N., Chataigné G., Rivière C., Nguyen Thi Hong V., ChauVanb M., Quetin-Leclercq J., Vander Heyden Y., Potential Antioxidant Compounds in Mallotusspecies Fingerprints. Part I: Indication, Using Linear Multivariate Calibration Techniques, Anal. Chim. Acta, 652: 189-197 (2009).
[20] Tistaert C., Dejaeghera B., Chataignéb G., Rivièreb C., Nguyen Hoaic N., ChauVanc M., Quetin-Leclercqb J., Vander Heyden Y., Potential Antioxidant Compounds in Mallotus Species Fingerprints. Part II: Fingerprint Alignment, Data Analysis and Peak Identification, Anal. Chim. Acta, 721: 35–43 (2012).