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Presentation 14 2-15

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Presentation 14 2-15

  2. 2. INTRODUCTION • Nanotechnology- – National Nanotechnology Initiative (NNI) definition I. Research and technology development at the atomic, molecular, or macromolecular levels (1-100nm) II. creating and using structures, devices, and systems that have novel properties and functions because of their size III. The ability to control or manipulate on the atomic scale
  3. 3. APPLICATIONS OF NANOMATERIALS Biomedical Optical Electronic Mechanical Consumer goods  Foods  Cosmetics
  4. 4. Potential Uses of Nanomaterials in Foods • Dietary supplements – Nanosized mineral supplements which have dramatically increased absorption – Nanoemulsions that increase absorption of botanical ingredients • Enhance flavor and color
  5. 5. Potential Uses of Nanomaterials in Foods • Decrease microbial contamination in food and improve packaging – Nanocomposite minimize the leakage of carbon dioxide – Kill microbes directly- Silver Nanoparticals
  6. 6. – Sensor to alert consumers or retailers of potential spoilage – Tracer to identify the source of contamination
  7. 7. • Titanium nitride was approved as a nanosized recycling aide for polyethylene terephthalate (PET) used as food contact material
  8. 8. Uses of Nanomaterials in Cosmetic Products • Nanodispersed Systems – Liposomes (nanosomes) – Nanoemulsions – Solid lipid nanoparticles • Other Nanoparticles – Metal Oxide Nanoparticles
  9. 9. Nanodispersed Systems  Liposomes – lipid bilayer  Nanoemulsion and lipid nanoparticles – lipid monolayer  Core can be hydrophilic or hydrophobic depending on the number of phospholipid layers  Deliver water or lipid soluble ingredients
  10. 10. Cosmetic Nanoemulsions • Nanoencapsulation of ingredients • May be found in skin and hair care preparations  Useful in typical cosmetic formulations  Light or oxygen sensitive actives can be protected  Vitamin A and Vitamin E
  11. 11. Potential Lipid Nanoparticle Advantages • Improved stability of ingredients • Controlled release of ingredients • Improved skin hydration • Incorporation of lipophilic ingredients • No or low carrier biotoxicity
  12. 12. Solid Hydrophobic Nanospheres • Highly cationic charge density of surface layer leads to strong interaction with skin/hair • Solid hydrophobic core protects water soluble and volatile ingredients • Found in fragrances, vitamins
  13. 13. Metal Oxide Nanoparticles • Metal oxides, such as TiO2 and ZnO, are found in many commercial applications
  14. 14. Potential Advantage of Metal Oxides • Small crystal size and controlled particle size give excellent dispersibility, make skin feel attractive, and is transparent on the skin • May increase protection against both UVA and UVB rays
  15. 15. REFERENCES • Application of Nanotechnology in Cosmetics, Li Mu & Robert L. Sprando • Nanotechnology In Cosmetics, By Will Soutter • Applications of nanotechnology: Cosmetics & food Finnish Cosmetic, Toiletry and Detergent Association, Sari Karjomaa • Application of Nanotechnology to Cosmetics and Foods , Robert L. Bronaugh