Abstract
AbstractThe ability of glyceryl monomyristate (GMM), glyceryl monopalmitate (GMP) and glyceryl monostearate (GMS) to form insoluble complexes with amylopectin was studied in model systems. Amylopectin complexed to the greatest extent with GMP, followed by GMM and GMS, respectively. The degree of complex formation was statistically different (p<0.01) among monoglycerides. Iodimetric titrations of the complexes showed that the presence of GMP and GMM in the model systems significantly (p<0.01) decreased the iodine affinity of the amylopectin when compared with the control. The presence of GMS in the model systems decreased the iodine affinity of the amylopectin slightly but not with statistical significance. The decrease in iodine affinity caused by the three monoglycerides was statistically different (p<0.01) among treatments. There was a negative linear relationship between the yield of complex and the amount of monoglyceride (MG) and the iodine affinity of the complexes. No conclusion about the nature of the interaction between amylopectin and the MG could be made by doing infrared and NMR analyses of the model systems.
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