NMR protocol for on-line Brix determination |
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Authors: | N. Marigheto K. Wright B. P. Hills |
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Affiliation: | 1. Institute of Food Research, Norwich Research Park, Colney, NR4 7UA, Norwich, UK
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Abstract: | Water suppression by diffusive attenuation was used to measure Brix in intact cellular tissue of apple and strawberry. Given the signal-to-noise ratio, the correlation for apple was established without repeated acquisition, so this protocol should also be useful for rapid, on-line measurements at low spectrometer frequencies. Water suppression by theT 1-Null method fails with cellular tissue because of the considerable variation in the longitudinal relaxation times of vacuolar and cytoplasmic water. |
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