Effects of Emulsification of Fat on the Surface Tension of Protein Solutions and Surface Properties of the Resultant Spray-Dried Particles

Abstract

To examine the effect of protein adsorption on the fat-water interface on the surface composition of spray-dried particles, whey, hydrolyzed whey, and soy protein isolate emulsions were prepared at three different protein to fat ratios of 1:1, 1:5, and 1:10 and spray dried. Non-hydrolyzed whey protein isolate (WPI) and the more hydrolyzed whey protein solutions at 20.2% degree of hydrolysis (DH) had significantly lower surface tension values with fat than without fat. The correlation between the reduction of surface tension value of an emulsion and the increase in protein surface composition of powder particles was observed for WPI and HWP406 but was not observed for the other protein isolate types. It was clear that the spray-dried emulsions had fat as the dominant component on the surface of the powder particles and that the amount of protein on the surface became severely depressed at higher fat addition levels. In terms of its powder morphology, the unique powder structures such as the indentations and folds usually found on the surface of protein containing powders were not evident because they were compromised by the presence of high surface fat. The powder with higher surface fat had more crumpled particle structures and dimpled surfaces.

Spray‐dried microcapsules of red palm olein‐flaxseed oil blend: Development, physicochemical characterization, and evaluation of its potential applications as a fat replacer and β‐carotene fortificant in cupcakes

“…Dislike extremely 1 maltodextrin depicted similar characteristics (Xu et al, 2013). In the present study, incorporation of a combination of GA with whey protein as wall material improved the barrier properties of the wall and this is because incorporation of polysaccharides in minor quantities will improve the encapsulation efficacy of whey protein (Anandharamakrishnan & Padma Ishwarya, 2015).…”

Design and development of a biorelevant simulated human lung fluid

“…Hydrolysis of phospholipids produces two main lysoforms, with the 1-acyl lysoform being predominant [ 44 ]. Higher levels of lipids reduce the surface tension of protein-containing solutions [ 45 ] and the electrical conductivity of aqueous solutions [ 46 ].…”

Elimination of oxidative stress and genotoxicity of biosynthesized titanium dioxide nanoparticles in rats via supplementation with whey protein-coated thyme essential oil

“…These results suggested that WPI, which was used as a wall material in the encapsulation process, enhanced the coalescence of droplets (Abdel-Wahhab et al 2018). Moreover, the spherical shape of the particles indicated the presence of WPI in the wall of capsules (Eratte et al 2014;Xu et al 2013), and the negative zeta potential is also attributed to the negatively charged WPI in neutral pH which is mostly due to the carboxylate groups as the only charged functionalities present in WPI molecule (Eratte et al 2014). Generally, the surface properties and the particles size have a critical role in nanoparticles uptake by the mucus membranes and the size of 50-300 nm is the preferred size for uptake (Roger et al 2010) and affect the pharmacokinetics, tissue distribution and clearance of nanoparticles (Sadat et al 2016).…”