Development of non-dairy creamer analogs/mimics for an alternative of infant formula using egg white, yolk, and soy proteins

Effects of commercial non-dairy tea whitener consumption in comparison to milk on lipid profile, histopathology, and liver enzymes in animal model

The pandemic of obesity and other diet-related non-communicable diseases are serious threats to the wellbeing and financial prosperity around the globe. It has been documented that the consumption of processed foods with high levels of refined sugars and fats are the main cause contributing to this phenomenon. The present work was therefore conducted to assess the effects of the consumption of non-dairy tea whiteners (NDTW’s) on lipid profile, histopathology, and liver enzymes of rats for a period of three months. To this end, 30 albino Wister rats (7 weeks old, 130 ± 5 g) was divided into five groups namely control (G1), fed with whole milk (G2), and groups fed with defined dose of commercial NDTW’s (G3, G4, and G5). All rats were provided feed and water ad libitum during the experimental period. At trial completion, the rats were decapitated, and samples (blood, liver) were collected and subjected to blood chemistry (lipid profile) and liver histopathological analyses. Results indicated that as compared to milk, powder NDTW consumption increased the level of cholesterol (69%), triglycerides (98%), and LDL (84%), whereas HDL was non-significantly affected. On the other hand, liquid NDTW consumption led to the increase in triglyceride levels for all NDTW, and yielded 130% increase as compared to milk, which might have been attributed to composition of NDTW. Additionally, liver and renal functional tests yielded non-significant results. The present work concluded that the consumption of NDTW contributed towards derangement and elevation in lipid profile parameters as compared to milk, particularly if consumed for longer period of time.

Interaction research of resveratrol and phosvitin based on fluorescence spectroscopy and molecular docking analysis

Phosvitin (PV) is the main phosphoprotein in egg yolk, with the highest degree of phosphorylation known in nature. The PV and resveratrol (Res) can form a complex, thus effectively improve the solubility of Res. In this work, the interaction between Res and PV was investigated by the fluorescence spectroscopy and molecular docking. The fluorescence emission intensity of PV became weak along with a red shift when it interacted with Res and the antioxidant activity was enhanced. The quenching constants of the interaction systems were 1.12×10⁴  M^-1 and 9.40×10³  M^-1 at 25°C and 35°C, respectively, which indicated the presence of static quenching phenomena between them. The binding constant was 1.80×10⁴  M^-1 , and the number of corresponding binding sites was approximately equal to one. The thermodynamic results revealed the combination was spontaneous, and the change of enthalpy and entropy was ∆H = 53.50 kJ/mol, ∆S = 261.00 J/mol·K, respectively. It indicated that the interaction forces between Res and PV were mainly hydrophobic interaction and hydrogen bonding. Molecular docking showed the binding mode, which was consistent with the experiment results. The research on the interaction between Res and PV provided theoretical guidance for the application of Res in food. PRACTICAL APPLICATION: PV is the most highly phosphorylated protein in nature and has pro-calcium absorption effects. Res is a polyphenol with strong antioxidant and anti-inflammatory activity, but its poor solubility limits its application. In this study, the solubility of Res was considerably enhanced by compounding Res and PV, and the antioxidant activity of Res was well retained. It increases the value of Res in food and other applications and opens up new possibilities for processing and utilization of PV.