Retardation Mechanism of Crystallization of Diacylglycerols Resulting from the Addition of Polyglycerol Fatty Acid Esters
| Autor: | Koichi Yasunaga, Masao Shimizu, Ken Taguchi, Yoshihisa Katsuragi, Satoru Ueno, Katsuyoshi Saitou, Kiyotaka Sato, Rika Homma |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
chemistry.chemical_classification 030109 nutrition & dietetics Chromatography urogenital system Precipitation (chemistry) Chemistry Fatty acid General Chemistry 010402 general chemistry Condensed Matter Physics 01 natural sciences 0104 chemical sciences Supramolecular assembly law.invention 03 medical and health sciences law Saturated fatty acid Organic chemistry lipids (amino acids peptides and proteins) General Materials Science Crystallization |
| Zdroj: | Crystal Growth & Design. 17:4749-4756 |
| ISSN: | 1528-7505 1528-7483 |
| Popis: | Edible oils containing high concentrations (>80%) of diacylglycerols (DAG oil) have beneficial health effects on obesity and obesity-related diseases; however, at low temperature, undesired precipitation of high-melting fractions in DAG oil can occur. Thus, preventing the precipitation of high-melting saturated fatty acid moieties in DAG oil is crucial for its expanded use. In this study, we investigated the mechanism of retardation of crystallization of DAG oil through the addition of polyglycerol fatty acid esters (PGFEs). We observed the occurrence of birefringence under polarized crossed-Nicols conditions in the PGFE-added DAG oil. We also found that prior to the crystallization of high-melting DAG fractions, PGFE-added DAG oil showed shear-rate-dependent changes in viscosity, providing strong evidence for the existence of self-assembled structures that lead to the birefringence. Furthermore, small- and wide-angle X-ray diffraction patterns suggest the formation of a supramolecular assembly comprising... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|