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The determination of the solids content of fats and oils by nuclear magnetic resonance
Author(s) -
Bosin W. A.,
Marmor R. A.
Publication year - 1968
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02667105
Subject(s) - reproducibility , chemistry , nuclear magnetic resonance , reliability (semiconductor) , analytical chemistry (journal) , chromatography , thermodynamics , physics , power (physics)
Abstract A nuclear magnetic resonance (NMR) method was developed for the determination of the solids content of fats and oils at various temperatures. This method is more rapid, accurate, and uni‐versally applicable than the generally accepted solids fat index (SFI) by the dilatometric pro‐cedure. A standard deviation of 1.0% solids, unaffected by parameter interactions and attain‐able by inexperienced operators, indicates good reliability and reproducibility. The utilization of an NMR variable‐tempera‐ture accessory and a more precise mode of NMR tuning improves the precision and accuracy. The direct calculation of percentage of solids from the NMR signals eliminates the need for standards and compensates for the temperature variable. The results indicate that two separate labora‐tories, using somewhat different methods and modes of NMR operation, agree reasonably well.