Parslow, ST ORCID: https://orcid.org/0000-0003-0861-6347, Almazrouei, NK, Newton, MI ORCID: https://orcid.org/0000-0003-4231-1002, Dye, ER ORCID: https://orcid.org/0000-0001-5425-619X and Morris, RH ORCID: https://orcid.org/0000-0001-5511-3457, 2019. A preliminary study of milk powder hydration using TEDSpiL continuous wave NMR. Magnetic Resonance in Chemistry, 57 (9), pp. 695-699. ISSN 0749-1581
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Abstract
Moisture content of foodstuffs are typically assessed by Titration or Near Infrared Spectroscopy which are labour intensive as a manual measurement or costly when automated. Magnetic Resonance offers a method for moisture evaluation but is also normally costly. In this work we revisit Look and Locker’s “Tone Burst” experiment with a marginal oscillator to evaluate moisture content of powdered skimmed milk subjected to increased humidity. We refer to this technique as the Transient Effect Determination of Spin-Lattice (TEDSpiL) relaxation times. Moisture content in the samples ranged from 0-12% as determined from the weight gained by the dry powder when re-suspended in water to reach a concentration of 40% w/v. The relaxation properties of re-hydrated samples were measured with a CW NMR sensor. Solutions made up from powders with a higher retained moisture content provided lower measured relaxation values providing a method of measuring the moisture content of the powder. This technique provides a moisture measurement in under 5 seconds compared to several minutes for the equivalent pulsed method using low field hardware.
Item Type: | Journal article |
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Description: | In special issue. |
Publication Title: | Magnetic Resonance in Chemistry |
Creators: | Parslow, S.T., Almazrouei, N.K., Newton, M.I., Dye, E.R. and Morris, R.H. |
Publisher: | John Wiley & Sons Ltd. |
Date: | September 2019 |
Volume: | 57 |
Number: | 9 |
ISSN: | 0749-1581 |
Identifiers: | Number Type 10.1002/mrc.4845 DOI 912861 Other |
Divisions: | Schools > School of Science and Technology |
Record created by: | Jill Tomkinson |
Date Added: | 04 Apr 2019 11:08 |
Last Modified: | 25 Jun 2021 13:48 |
URI: | https://irep.ntu.ac.uk/id/eprint/36179 |
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