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A 13 C‐NMR study of the crystal polymorphism and internal mobilities of the triglycerides, tripalmitin and tristearin
Author(s) -
Bociek S. M.,
Ablett S.,
Norton I. T.
Publication year - 1985
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/bf02541839
Subject(s) - tripalmitin , polymorphism (computer science) , magic angle spinning , chemistry , magic angle , crystallography , molecule , analytical chemistry (journal) , stereochemistry , nuclear magnetic resonance spectroscopy , organic chemistry , chromatography , biochemistry , genotype , gene
The combined NMR technique of cross‐polarization, high power decoupling and magic angle spinning (CP/MAS) has been used in the study of the polymorphic forms of the two triglycerides, tripalmitin and tristearin. Variations in the 13 C chemical shift values for the different polymorphic forms have been found and used to obtain molecular information, and to distinguish between chain orientations. Information on the relative mobilities of particular regions within the molecule for the different polymorphs also is presented.