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The binary phase behavior of 1,3-dimyristoyl-2-stearoyl-sn-glycerol and 1,2-dimyristoyl-3-stearoyl-sn-glycerol

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F08%3A00021114" target="_blank" >RIV/60461373:22330/08:00021114 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    The binary phase behavior of 1,3-dimyristoyl-2-stearoyl-sn-glycerol and 1,2-dimyristoyl-3-stearoyl-sn-glycerol

  • Original language description

    The binary phase behavior of pure 1,3-dimyristoyl-2-stearoyl-sn-glycerol (MSM) and 1,2-dimyristoyl-3-stearoyl-sn-glycerol (MMS) was investigated in terms of polymorphism, melting and crystallization behavior. SFC, hardness and microstructure. Samples were crystallized at cooling rates of 3.0 and 0.1 °C/min. The asymmetric TAG demonstrated lower melting and crystallization points at both cooling rates. All samples crystallized in the ´ polymorph when cooled at 0.1 °C/min and in the polymorph when cooledat 3.0 °C/min. The experimentally determined kinetic phase diagram of MSM-MMS was monotectic for both cooling rates. This data was well described by a thermodynamic model using the Bragg-Williams approximation for non-ideality of mixing and suggested that in both the solid and liquid states, like pair interactions (MSM-MSM and MMS-MMS) were favored over MSM-MMS interaction. A strong tendency to phase separation in the solid phase was also observed. For both cooling rates, the fit of the

  • Czech name

    Fázové chování binární směsi 1,3-dimyristoyl-2-stearoyl-sn-glycerolu a 1,2-dimyristoyl-3-stearoyl-sn-glycerolu

  • Czech description

    U binární směsi čistých triacylglycerolů 1,3-dimyristoyl-2-stearoyl-sn-glycerolu (MSM) and 1,2-dimyristoyl-3-stearoyl-sn-glycerolu (MMS) byla určena krystalická modifikace, bod tání, tuhnutí, SFC, tvrdost a mikrostruktura. Vzorky byly krystalizovány rychlostí chlazení 3.0 a 0.1 °C/min. Asymetrické TAG vykazovaly nižší bod tání a tuhnutí při obou rychlostech chlazení. Všechny vzorky krystalizovaly v ´ modifikaci , pokud byly chlazeny rychlostí 0.1 °C/min a v modifikaci, pokud byly chlazeny rychlostí 3.0°C/min. Fázové diagramy MSM-MMS, které byly určeny experimentálně, byly monotektické pro oba typy chlazení. Tato data byla dobře popsána termodynamickým modelem za použití Bragg-Williamsovy aproximace pro neideální směsi a navrženo, že v pevném a kapalném stavu převažují interakce MSM-MSM a MMS-MMS nad MSM-MMS interakcemi. Byl také pozorován silný trend fázové separace v pevném stavu.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    GM - Food industry

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2008

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Chemistry and Physics of Lipids

  • ISSN

    0009-3084

  • e-ISSN

  • Volume of the periodical

  • Issue of the periodical within the volume

    154

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    12

  • Pages from-to

  • UT code for WoS article

    000257848800002

  • EID of the result in the Scopus database