Abstract
AbstractIn recent years, the importance of nanomaterials in food science, medicine, etc. has been increasing quickly. Herein, organic and inorganic red selenium nanoparticles synthesised by the reduction of sodium selenite with chemical and biological reducing agents. Grey hexagonal form in aqueous and powder was assembled at a high temperature of 85 °C for 10 min. Also, selenium enriched yogurt powder was made that contained about 2,000 mg kg−1 selenium, 93.8% of which is in nano form with a size of 50–500 nm. The synthesised nanoparticles were characterised by Dynamic Light Scattering Particle Size Analyzer (DLS), X-ray Diffraction Analysis (XRD), Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM). The prepared SeNPs could be promising additive for a wide range of applications.
Highlights
Selenium is an efficient element in various biochemical pathways and physiological functions
The synthesised nanoparticles were characterised by Dynamic Light Scattering Particle Size Analyzer (DLS), X-ray Diffraction Analysis (XRD), Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM)
An aqueous solution of selenium nanoparticles was prepared by the reaction of 500 mg dmÀ3 sodium selenite and 10 g dmÀ3 ascorbic acid solutions
Summary
Selenium is an efficient element in various biochemical pathways and physiological functions. A regulation (EC) No 1925/2006 of the European Parliament and of the Council (EC, 2006a) included that selenium (sodium selenate, sodium hydrogen selenite and sodium selenite) may be added to foods. Health benefits of selenium including maintenance of normal hair, maintenance of normal nails, protection against heavy metals, maintenance of normal joints, maintenance of normal thyroid function, protection of DNA, proteins and lipids from oxidative damage and maintenance of the normal function of the immune system are authorised by the European Food Safety Authority (Regulation (EC) No 1924/2006) (EC, 2006b) and EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA), 2010. The recommended daily dose (RDA) for adults is from 55 to 70 mg/ person per day, and the maximum level of selenium is 300 mg/person per day according to the regulation (EFSA Panel on Dietetic Products, Nutrition and Allergies, 2014). Selenium exposure can result in either acute or chronic health problems
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