Food testing is a very important activity carried out in the food industry; this is done for various reasons, such as testing the physical properties of food, shelf life of the product, identification of the chemical components of the food (Food Chemistry Testing). Furthermore, it comes down to testing the quality of food served to consumers to know whether the food is safe for them or not. Recently, nanotechnology has been introduced into the food market where many scientists warn of its serious risks to humans and the environment due to the concept of manipulating matter at the scale of atoms and molecules (Miller , G. (2007). Nanoparticles are introduced into foods to change the texture, flavor and color of foods, in addition to providing food safety benefits and improving performance. health benefits of food. The texture, taste and color of foods are changed by applying modifications on the nanoscale; the proteins are assembled in order to change the texture of the food as in yogurt where the protein undergoes denaturation then a reassembly of the components which will form larger structures, these large structures will assemble and form networks of gel which are the texture of the product (Nanotechnology in food products, 2009). Some foods, for example chocolate shake, are coated with cocoa particles in order to change their taste to creamy chocolate. Our body needs many nutrients in order to maintain good health and a healthy immune system; some of these nutrients are introduced into foods via nanotechnology. There are nano-sized capsules designed to contain omega-3 fatty acids, antioxidants, enzymes and provide solubility of certain vitamins used in foods...... middle of paper ...... healthier ') On the other hand, nanotechnology presents disadvantages and risks to the life of human beings. Some doctors say nanoparticles are very small and therefore can easily cross the blood-brain barrier, the membrane that protects the brain from harmful and toxic chemicals in the blood, where larger molecules cannot pass. After crossing the blood-brain barrier, the particles will pass to organs such as the kidneys and liver (R. Smithers, The Guardian, 2010). For example, nanomaterials present in food packaging would migrate from the packaging to the inside of the food which could contain chemicals or molecules that could be harmful (C. Ortiz, 2014). Although some risks are discussed, this does not apply to all nanomaterials and does not reflect the risk of nanotechnology itself as it depends on many different parameters..