Analysis of trans fatty acids production and squalene variation during amaranth oil extraction

作者：Ariza Ortega Jose A; Martinez Zavala Arturo; Cano Hernandez Maribel; Diaz Reyes Joel

来源：Central European Journal of Chemistry, 2012, 10(6): 1773-1778.

DOI：10.2478/s11532-012-0104-4

• Amaranth oil
• Trans fatty acid
• Fourier-transform infrared spectroscopy
• Gas chromatography
• Squalene

The purpose of this study was to evaluate the decay of squalene and the formation of trans fatty acids (TFAs) in the amaranth oil extracted with hexane with and without heat. Oils were analyzed by determining their chemical values, and the fatty acids were identified and quantified by using Fourier-transform infrared (FTIR) spectroscopy, in the mid-region of 400-4000 cm(-1), and gas chromatography. The FTIR analysis shows that two oil extracts (with and without heat) present a well-defined peak at 968 cm(-1), which represents the trans double bonds. The quantified TFAs are %26lt; 0.5 g per 100 g of oil, which is considered as TFAs-free. The squalene content in the oil extracted without and with heat are 6.98 +/- 1.1% and 7.12 +/- 1.3%, respectively. Our data suggest that the TFAs formation is directly promoted by thermal processing and that squalene content is not affected by the application of heat during the oil extraction process in amaranth.

• 出版日期2012-12