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Predicting Mandarin Fruit Acceptability: From High-Field to Benchtop NMR Spectroscopy
Ignacio Migues1,2, Fernando Rivas3, Guillermo Moyna4
1Laboratorio de Farmacognosia y Productos Naturales, Departamento de Química Orgánica, Facultad de Química, Universidad de la República, Montevideo 11800, Uruguay.
Benchtop nuclear magnetic resonance (NMR) systems can accurately predict mandarin quality, matching high-field NMR results. This cost-effective method enables wider adoption by cultivators for selecting new cultivars.
Area of Science:
- Analytical Chemistry
- Agricultural Science
- Spectroscopy
Background:
- Low-field benchtop nuclear magnetic resonance (NMR) systems offer cost-effective alternatives to high-field systems for research and quality control.
- Nuclear magnetic resonance (NMR) spectroscopy is a powerful tool for chemical analysis.
Purpose of the Study:
- To adapt a predictive model for mandarin consumer acceptability, originally developed on a high-field NMR spectrometer, to a low-field benchtop NMR system.
- To evaluate the comparability of results obtained from high-field and benchtop NMR systems for analyzing mandarin quality parameters.
Main Methods:
- Adaptation of a chemometric-based method for predicting mandarin consumer acceptability.
- Utilizing a benchtop 60 MHz NMR spectrometer and comparing results with a high-field 400 MHz NMR spectrometer.
- Analysis of sugar and citric acid levels in mandarins using NMR spectroscopy.
Main Results:
- Comparable results for sugar and citric acid levels were obtained from both high-field and benchtop NMR systems.
- Virtually identical predictive linear models were developed using data from both instruments.
- The study demonstrates the feasibility of using benchtop NMR for mandarin quality assessment.
Conclusions:
- Benchtop NMR systems provide comparable analytical data to high-field systems for predicting mandarin consumer acceptability.
- The lower cost of benchtop NMR systems makes this chemometric method accessible for routine use by cultivators.
- This technology can serve as an additional tool for selecting new mandarin cultivars with desirable consumer traits.
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