Análise de Alimentos e produtos agrícolas por ressonância magnética, quimiometria & AI

Time-domain nuclear magnetic resonance combined with Chemometrics tools as non-destructive and non-invasive food analytical methods

Time-domain nuclear magnetic resonance (TD-NMR) signals spectrometers have been studied as non-destructive and non-invasive analytical methods for food quality control. The general profiles of the signals are exponential decays in function of time and they have been utilized to construct multivariate models to predict important food quality parameters. The method is rapid and has been used to replace time consuming and laborious wet chemical methods. The differences of the amplitude and time constant of these signals can be directly related to moisture, fat content, color, total solid soluble content in fresh fruits, nut, seeds, meat, mayonnaises, wine, among other food products.

Moraes, T.B.; Colnago, L.A.; Noninvasive Analyses of Food Products Using Low-field Time-domain NMR: A Review of Relaxometry Methods, Brazilian Journal of Physics, v. 52, 43 (2022).
https://link.springer.com/article/10.1007/s13538-022-01055-1   


Consolo, N.R.B., et al.; Using TD-NMR relaxometry to assess the effects of diet type and stocking rate on the incidence and degree of severity of myopathies in broilers, Microchemical Journal, v. 181, 107745, 2022.
https://doi.org/10.1016/j.microc.2022.107745 


Machado, G.O., et al.; Non-Invasive Method to Predict the Composition of Requeijão Cremoso Directly in Commercial Packages Using Time Domain NMR Relaxometry and Chemometrics, Molecules, v. 27(14), 4434, 2022.
https://doi.org/10.3390/molecules27144434 

Consolo, N.R.B., et al.; Using TD-NMR relaxometry and 1D 1H NMR spectroscopy to evaluate aging of Nellore beef, Meat Science, v. 181, 108606, 2021.
https://doi.org/10.1016/j.meatsci.2021.108606 


Consolo, N.R.B., et al.; Characterization of chicken muscle disorders through metabolomics, pathway analysis, and water relaxometry: a pilot study, Poultry Science, 99, 11, 6247-6257, 2020.
https://www.sciencedirect.com/science/article/pii/S0032579120304491 


Bizzani, M., et al.; Non-invasive detection of internal flesh breakdown in intact Palmer mangoes using time-domain nuclear magnetic resonance relaxometry,  Microchemical Journal, 158, 105208, 2020.
https://www.sciencedirect.com/science/article/abs/pii/S0026265X20317136 


Rocha, G., et al.; Determination of Biodiesel Content in Diesel Fuel by Time-Domain Nuclear Magnetic Resonance (TD-NMR) Spectroscopy , Energy Fuels, 31, 5120−5125, 2017.
https://pubs.acs.org/doi/abs/10.1021/acs.energyfuels.6b03508 

Curso de Tecnologia de Pós-Colheita - Embrapa

MÓDULO 5 – ANÁLISE NÃO DESTRUTIVA DA QUALIDADE DE FRUTAS E HORTALIÇAS
TÓPICO 1 – Análises não-destrutivas
TÓPICO 2 – Análises por Ressonância Magnética Nuclear (RMN)
TÓPICO 3 – Análise por e spectroscopias na região do infravermelho (NIR)
TÓPICO 4 – Aplicações da espectroscopia NIR e relaxometria por RMN 

Coordenadores:
Marcos David Ferreira – Embrapa Instrumentação
Luiz Alberto Colnago – Embrapa Instrumentação
Colaboradores:
Tiago Bueno de Moraes – Instituto de Ciências Exatas - UFMG
Douglas William Menezes Flores – Spectral Solution Comercio e Serviços LTDA
Marília Bizzani - Doutoranda ESALQ-USP