Ultrasound applications in food processing with an emphasis on packaging materials

Nowadays, the use of ultrasound in the food industry is very important and its widespread application as a non-thermal process in heat-sensitive foods has attracted increasing attention, due to the preservation of sensory, nutritional and functional properties along with increasing shelf life and creating safety against microbial activities. The application of ultrasound in processes such as emulsification, distribution and dispersion, dissolution, and stabilization has been made possible and accelerated. The processes that play a significant role in the preparation and manufacture of films and coatings for use in the packaging industry. In other words, one of the most important applications of ultrasound is its use in the manufacture and design of various packaging materials, including natural or biodegradable packaging materials, and nano-packaging materials. Because the distribution and uniformity of the particles in the polymer matrix is very important and in fact all the expected properties of a packaging film depend on this uniformity and distribution. The use of ultrasound helps to this the film to be even and evenly distributed. In addition, since ultrasound is now used as a process aid alongside other processes for decongesting, decontamination, extraction, extrusion, extraction, wastewater treatment, etc .; this paper discusses the application of ultrasound in the food industry especially the production of food packaging films. Furthermore, the importance of the physical properties of the ultrasound device used in scientific studies is mentioned in this article.