Rapid Quality Control for Oils and Fats by FT-NIR Spectroscopy

Abstract

Near infrared (NIR) spectroscopy is a method for qualitative and quantitative analyses by measuring and evaluating the absorption of electromagnetic wave so called “near infrared light” by unground solids, powder and liquid samples. NIR spectroscopy has the advantages on chemical-free and rapid where simultaneously analysis can be performed for multiple components per measurement without any sample pre-treatment. Benefits of NIR analysis also include its ability to perform a measurement non-destructively/non-invasively; thus allows the technology to become important tool for quality control and process control of raw materials and final products. Additionally, NIR spectroscopy is frequently used for in-line and on-line analyses. The measurement can be done by placing a system on a conveyor belt or carrying reflected/transmitted light by optical fiber(s). In this article, the rapid analysis of fats and oils using FT-NIR (Fourier Transform Near Infrared) analysis, which is used in quality control, is introduced. The content includes review of official methods overseas.