Spectral profiles of commercial omega-3 supplements: an exploratory analysis by ATR-FTIR and ¹H NMR.

ABSTRACT: Most of the population is dependent on supplemental products to reach the recommended level of omega-3 polyunsaturated fatty acid (ω-3 PUFA) intake. Thus, knowledge about the quality of ω-3 supplements is important for their safe consumption. In this work, attenuated total reflectance-Fourier transform infrared (ATR-FTIR) and nuclear magnetic resonance (NMR) spectroscopy were applied to assess the quality of fourteen commercial ω-3 supplements. Using ATR-FTIR data, we could identify whether ω-3 PUFA was esterified as either triacylglyceride (71%) or ethyl (29%) esters in ω-3 supplements. The type of esterification is rarely included in the product labels, although the consumer should have the right to choose which form of the supplement to consume. On the other hand, ¹H NMR spec

SUBMITTER: Lopes TIB 

PROVIDER: S-EPMC7054490 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature