Experiments on DHA Transport Stability of Pneumatic Homogenizer under Different Homogenization Conditions
Homogenization is an indispensable process in the production of dairy products, beverages, cosmetics, pharmaceuticals, and other products. The pneumatic homogenizer is special equipment for homogenizing and refining liquid materials and conveying under high pressure. When the material passes through the homogenizer, it will be subject to high-speed shearing, high-frequency oscillation, cavitation and convection impact, and other mechanical effects and corresponding thermal effects. As a result, the physical, chemical and structural properties of materials will change and eventually achieve homogeneous emulsification effect. Fruit.
Different homogenization conditions will have a significant impact on the stability and shelf life of later products.
The stability and microstructure of DHA algal oil emulsion prepared by sodium caseinate-glucose MRPs under different homogeneous conditions were studied by stability analyzer, oxidation degree of the emulsion during storage and laser confocal microscopy. The DHA algal oil emulsion prepared by sodium caseinate alone under the same conditions was studied. As a contrast, the excellent emulsifying and antioxidant properties of sodium caseinate-glucose MRPs were further confirmed. The optimum technological conditions for preparing DHA algal oil emulsion by sodium caseinate-glucose MRPs were determined as homogenization pressure 95 MPa and homogenization times 3 times. At this time, the scanning results of Turbiscan stability analyzer for 24 hours showed that the homogenization pressure was 95 MPa. The stability of DHA algae oil emulsion was better than that of other groups, BS changed slightly, only slight fat floatation and bottom clarification; the total oxidation value was at a low level during 28 days storage at room temperature, and the oil droplets in the emulsion were smaller under laser confocal microscopy, mainly distributed between 0.47 and 0.59 microns, with complete and comparative morphology. For homogeneity.
Sodium caseinate-glucose MRPs were prepared by using small UHT equipment. The disadvantages of water bath and oil bath test methods were avoided and the production efficiency was improved. At the same time, the experimental data needed for industrial production were obtained, and the laboratory results were accelerated and promoted to industrialized production.
This application experiment of pneumatic homogenizer will also provide technical support for the preparation of DHA and other sensitive and oxidizable functional factor delivery system and its application in infant formula milk powder and other foods.