| Grant number: | 12/20247-8 |
| Support Opportunities: | Regular Research Grants |
| Start date: | February 01, 2013 |
| End date: | April 30, 2015 |
| Field of knowledge: | Physical Sciences and Mathematics - Chemistry - Analytical Chemistry |
| Principal Investigator: | Luiz Alberto Colnago |
| Grantee: | Luiz Alberto Colnago |
| Host Institution: | Embrapa Instrumentação Agropecuária. Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA). São Carlos , SP, Brazil |
| City of the host institution: | São Carlos |
Abstract
The demand for food quality control and certification has led to the proposal and development of non-destructive and non-invasive analytical methods. The goal of these methods is that traders and even the consumers can known the food composition, not by the average of a sample from a batch, but rather, the quality of all the products they are buying. Among the various methods studied the time domain nuclear nuclear magnetic resonance (TD-NMR) has been one of the most used. The great advantage of this technique is the high degree of penetration of radio frequency radiation in nonconductive materials, allowing its use in fresh and processed food, even when they are packed (except metal packaging). Over the past 15 years our research group has been developing low cost TD-NMR instrumentation and methods for food analysis. Among these methods stand out the continuous wave free precession (CWFP) and Carr-Purcell-Meiboom-Gill (CPMG) pulse sequences applied to online analysis. These methods were developed for high-speed analysis required in industry. In this project the goal is the development and validation of benchtop, low cost and easy to operate TD- NMR spectrometers, for use by small businesses and even by consumers at supermarkets. (AU)
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