Journal of Chemical Science and Chemical Engineering Open Access http://www.journalofchemistry.net 19 Volume 2 | Issue 1 Research Article A Review: Metal Nanoparticles and their Safety Processing in Functional Foods Loutfy H. Madkour Chemistry Department, Faculty of Science Tanta University, 31527, Tanta, Egypt Received Date: April 07, 2021; Accepted Date: April 23, 2021; Published Date: April 27, 2021 Abstract A Safety of nanotechnology in food industries has been discussed. Different nanomaterials (NMs) such as nanopowders, nanotubes, nano-fibers, quantum dots, and metal and metal-oxide nanoparticles are globally produced in large quantities due to their broad applicability in food-related industries. We present some uses of nanoparticles in food and related industries and their possible side effects. The various aspects of nanoparticles and their impact on human exposure, safety, and environmental concerns have been discussed. ZnO NPs are listed as a kind of safe substance by the FDA. The safety of nanostructured synthetic amorphous silica (SAS) as a food additive (E 551) has been discussed. and has always been produced by the same two production methods. Bioavailability increases for iron of nanometer size. The characteristics of broad spectrum of activity against food pathogens of silver nanostructures gives an insight for their potential applicability in incorporation of food packaging materials and antimicrobials for stored fruits and foods. Keywords: Food-processing industry; Food safety; Nanostructured; Silicon dioxide; Silver nanostructures; ZnO NPs; Antimicrobial activity *Corresponding author: Loutfy H. Madkour, Chemistry Department, Faculty of Science Tanta University, 31527, Tanta, Egypt, Email: Citation: Loutfy H. Madkour (2021) A Review: Metal Nanoparticles and their Safety Processing in Functional Foods. J Chem Sci Chem Engg 2(1): 19-37. Introduction To make full use of nanotechnology in the food and related industries, we must have a thorough understanding of nanoparticles. Overall, this chapter indicates that nanotechnology has great potential for delivering herbal drugs and nutraceuticals, and in light of the comprehensive health problems, its utilization for effective disease prevention and health promotion is necessary and to be anticipated. Even though nanotechnology offers promisingapproaches in herbal drug delivery and nutraceutical applications, additional innovative research is needed to address the cost effective and long-term safety of the nanoparticles. The arrival of nanotechnology in various industries has been so rapid and widespread because of its wide-ranging applications in our daily lives. Nutrition and food service is one of the biggest industries to be affected by nanotechnology in all areas, changing even the nature of food itself. Whether it’s farming, food packaging, or the prevention of microbial contamination the major food industries have seen dramatic changes because of nanotechnology. Different nanomaterials such as nanopowders, nanotubes, nanofibers, quantum dots, and metal and metal-oxide nanoparticles are globally produced in large quantities due to their broad applicability in food-related industries. Because of the unique properties of nanostructures and nanomaterials – such as a large surface area, high activity, and small size, there is some concern about the potential for harmful adverse effects of used nanomaterials on health or the environment. However, because of tremendousadvances in different industries, this concern may be unnecessary. New nanomaterials make them more suitable for different applications in different industries. However, these materials may create threats of environment pollution or even harmful effects on human health [1-3]. Our knowledge regarding the safety of used nanomaterials in food and nutrition industries is low. Also, note that some nanomaterials enter the human body.