Influence of fat crystallization in W/O emulsions on the water droplet size determination by NMR diffusometry was written by Nelis, Veronique;De Neve, Lorenz;Balcaen, Mathieu;Dewettinck, Koen;Courtin, Timothee;Martins, Jose C.;Van der Meeren, Paul. And the article was included in Journal of Colloid and Interface Science in 2021.Reference of 75-57-0 The following contents are mentioned in the article:
It is expected that low resolution (LR) NMR diffusometry enables (more) accurate water droplet size determination for solid-fat based water-in-oil (W/O) emulsions with (sub)-micron size water droplets in comparison to liquid-oil based W/O emulsions due to hindered extra-droplet water diffusion. W/O emulsions with a volume-weighed mean diameter of about 1μm and a solid fat content (SFC) ranging from 0% to 74% were produced. The aqueous phase contained the ionic marker tetraphenylphosphonium chloride (TPPCl). The water droplet size was estimated using LR and high resolution (HR) NMR diffusometry. HR-NMR diffusometry showed that the diffusion behavior of water and TPPCl was different, indicating water diffusion beyond the droplet’s interfacial boundaries. From a certain SFC onwards, a slower echo decay was observed for the water mols., thus decreasing the overestimation of the water droplet size in (sub)micron W/O emulsions. For those emulsions, the solid fat matrix is believed to hinder extra-droplet water diffusion, which is most likely to be related to the increased tortuosity of the diffusive path in the porous fat crystal network. Using LR-NMR, it can be verified whether the water echo attenuation is mono-exponential or bi-exponential by increasing the gradient pulse duration for the maximum gradient strength, which is more convenient for routine anal. compared to HR-NMR. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Reference of 75-57-0).
Tetramethylammonium chloride (cas: 75-57-0) belongs to organic chlorides. Organochlorines are organic compounds having multiple chlorine atoms. They were the first synthetic pesticides that were used in agriculture. They are resistant to most microbial and chemical degradations. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Reference of 75-57-0
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics