Rapid analyses of oil and fat content in agri-food products using continuous wave free precession time domain NMR

L A Colnago; R B V Azeredo; A Marchi Netto; F D Andrade; T Venâncio

doi:10.1002/mrc.2841

Rapid analyses of oil and fat content in agri-food products using continuous wave free precession time domain NMR

Magn Reson Chem. 2011 Dec:49 Suppl 1:S113-20. doi: 10.1002/mrc.2841.

Authors

L A Colnago¹, R B V Azeredo, A Marchi Netto, F D Andrade, T Venâncio

Affiliation

¹ Embrapa Instrumentação, São Carlos, São Paulo, Brazil. colnago@cnpdia.embrapa.br

PMID: 22290701
DOI: 10.1002/mrc.2841

Abstract

Time-domain nuclear magnetic resonance (TD-NMR) is one of the most popular solutions for quality control in the food industry. Despite the recognized success of TD-NMR in quality control and quality assurance, the speed by which samples can be characterized by TD-NMR techniques is still a concern, primarily when considering online or high-throughput applications. Therefore, to enhance the speed of TD-NMR analysis, we developed rapid methods based on steady-state free precession of nuclear spins, which we denoted continuous wave free precession (CWFP). CWFP substantially increases the sensitivity of TD-NMR compared with free induction decay or spin-echo detection, which are traditionally used. The objective of this paper was to present the physical background of CWFP and review its recent developments and applications in fat and oil quantifications in agri-food products.

Publication types

Research Support, Non-U.S. Gov't
Review

MeSH terms

Crops, Agricultural / standards*
Fats / chemistry*
Food Industry / standards
Food Technology / methods*
Magnetic Resonance Spectroscopy*
Oils / chemistry*
Time Factors

Substances

Fats
Oils