The Analysis of Edible Oils Using ATR FTIR
6 Sept 2017Edible oils are a series of related natural compounds differing in their degree of unsaturation and chain length. Chemically, these compounds are esters of various fatty acids with a single trifunctional alcohol (glycerol), and are hence called triglycerides. The degree of unsaturation of an edible oil is considered an important factor in its suitability as a food product and this application note - involving six different types of natural oil - shows how infrared spectroscopy can be complementary to traditional techniques for analyzing such oils. It is comparatively easy to identify absorbance bands that can be assigned to C-H vibrations in both saturated and unsaturated compounds. Peak height or area measurements allow the degree of unsaturation to be measured.
Related Products
Request Quote for All Products
Gateway HATR multiple reflection ATR
Specac LtdSpecac’s Gateway™ ATR Accessory Kit is an economical multi-reflection horizontal ZnSe ATR accessory. With high-performance transfer optics and anti-reflection coated ZnSe crystals as standard, high optical throughput is achieved to facilitate an excellent standard of FTIR ATR spectral data. The Gateway™ ATR Accessory Kit consists of: an optical unit; a trough top-plate with a 45° angle ZnSe crystal; a flat top-plate with a 45° angle ZnSe crystal; and, a clamp assembly. The trough top-plate is used for liquids and pastes analysis, and the flat top-plate and clamp assembly are used for solids and powders analysis. This accessory is simple to install and use in a wide range of spectrometer systems. A wide range of interchangeable crystal ATR top-plates and sampling accessories can be used on the Gateway™ ATR Accessory optical unit to provide unrivaled multi-reflection ATR sampling versatility. These allow the Gateway™ ATR Accessory to be configured for the analysis of all types of samples (for example: solids, films, pastes, liquids) under a range of conditions (for example: static or flow conditions, and heating applications up to 200°C). All of the accessories are factory aligned. All top-plates are fitted as standard with a 6 reflection ZnSe ATR crystal with a 45° angle of incidence, but other crystal materials and incident angles are available on request. The Gateway™ ATR Accessory is a Benchmark™ baseplate compatible accessory. Features and Benefits: • High optical throughput • Easy alignment • Purgeable optics • Extensive range of optional top-plates • Replaceable crystals