| چکیده انگلیسی مقاله |
Olive oil is associated with healthy food due to its high content of Vitamin E, antioxidants, and mono-unsaturated fatty acids (1). Olive oils are available in different qualities such as extra virgin, virgin, olive oil, and others. One of the most important problems is grade definition of olive oils in industry. Internationally, most countries use the International Olive Oil Council (IOOC) standards(2). The IOOC has a United Nations charter to develop criteria for olive oil quality and purity standards. There are different classical methods which they are used to define the grade of olive oils. However none of these method is sufficient individually and proposing an economic, comprehensive and easy method for grade definition of olive oil is very important (1). Metabolomics is the study and systematic quantification of small molecules in biological samples (cells, tissues, organs, biofluids, or whole organisms), and thus complements efforts from other high throughput omics platforms such as genomics, transcriptomics, and proteomics as an indispensable platform. Gas and liquid chromatography or capillary electrophoresis linked to mass spectrometry (GC-MS, LC-MS, and CE-MS) are common platforms for generating metabolomics data. In particular, polar primary metabolites (such as sugars, amino acids, amines, sugar phosphates, or sugar alcohols) and fatty acids are well-suited to gas chromatography mass spectrometry (GC-MS), which has excellent chromatographic resolution and thus lends itself to routine quantitative metabolomic applications (3). In this study PLS-DA, a multivariate based classification method, is suggested for grade definition of commercial olive oils in Iran. It has been shown that this method can be applied as a comprehensive method for grade definition of olive oils successfully. This method is easy and economic in grade definition of olive oils in industry. |
