Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Nanotechnology_2013

422 views

Published on

Part of a series of educational presentations. This presentation is Phase 4: Nanotechnology

Published in: Food
  • Be the first to comment

Nanotechnology_2013

  1. 1. © CommNet 2013 Nanotechnology
  2. 2. © CommNet 2013 Objec&ves: To define nanotechnology. To understand the basic scien=fic principles of nanotechnology.
  3. 3. © CommNet 2013 A nanometer (nm) is one-billionth of a metre, smaller than the wavelength of visible light and a hundred-thousandth the width of a human hair. What is nanotechnology? Nanotechnology deals with anything measuring between 1 and 100 nm. Nanotechnology is the ability to create and manipulate atoms and molecules on the smallest of scales. ‘Nano’ comes from the Greek word for dwarf.
  4. 4. © CommNet 2013 There are a number of products available that are already benefi=ng from nanotechnology. Using sunscreen as an example, many of them contain nanopar=cles of zinc oxide or =tanium oxide. Older sunscreen formulas use larger par=cles, which is what gives most sunscreens their whi=sh color. Smaller par=cles are less visible, so when the sunscreen is rubbed into the skin, it doesn't leave a whi=sh =nge.
  5. 5. © CommNet 2013 Others include: •  mobile phone touch screens; •  cosme=cs; •  tennis rackets; •  bicycles; •  fabric; •  computer technology.
  6. 6. © CommNet 2013 Nanotechnology offers a wide range of opportuni=es for the development of innova=ve products and applica=ons for food packaging. Nanotechnology and nanomaterials are a natural part of food processing and conven=onal foods, because the characteris=c proper=es of many foods rely on nanometer sized components (such as nanoemulsions and foams).
  7. 7. © CommNet 2013 ‘Nano’ foods now All foods contain nanopar=cles. Examples of foods that contain nanopar=cles include milk and meat. Milk contains caseins, a form of milk protein present at the nanoscale. Meat is made up of protein filaments that are much less than 100nm thin. The organisa=on and change to the structures of these affects the texture and proper=es of the milk or meat.
  8. 8. © CommNet 2013 Uses for nanotechnology in food •  nanocarrier systems for delivery of nutrients and supplements; •  organic nano-sized addi=ves for food, supplements and animal feed; Nanotechnologies are being developed all the =me. Here are some examples that are being used:
  9. 9. © CommNet 2013 •  food packaging applica=ons e.g. plas=c polymers containing or coated with nanomaterials for improved mechanical or func=onal proper=es; •  nanocoa=ngs on food contact surfaces for barrier or an=microbial proper=es; •  nano-sized agrochemicals (a chemical used in agriculture, such as a pes=cide or a fer=lizer.); •  nanosensors for food labelling.
  10. 10. © CommNet 2013 Nanopar=cles are being used to deliver vitamins or other nutrients in food and drinks without affec=ng the taste or appearance. These nanopar=cles encapsulate the nutrients and carry them through the stomach into the bloodstream. Food examples Nanopar=cle emulsions are being used in ice cream and various spreads to improve the texture and uniformity.
  11. 11. © CommNet 2013 New developments in nanoscience and nanotechnology will allow more control and have the poten=al of increased benefits. These include: •  healthier foods (e.g. lower fat, lower salt) with desirable sensory proper=es; •  ingredients with improved proper=es; •  poten=al for removal of certain addi=ves without loss of stability; •  smart-aids for processing foods to remove allergens such as peanut protein. Food examples
  12. 12. © CommNet 2013 Packaging examples Researches have produced smart packages that can tell consumers about the freshness of milk or meat. When oxida=on occurs in the package, nanopar=cles indicates the colour change and the consumer can see if the product is fresh or not. Incorpora=on of nanopar=cles in packaging can increase the barrier to oxygen and slow down degrada=on of food during storage.
  13. 13. © CommNet 2013 Bo[les made with nanocomposites minimise the leakage of carbon dioxide out of the bo[le. This increases the shelf life of fizzy drinks without having to use heavier glass bo[les or more expensive cans. Food storage bins have silver nanopar=cles embedded in the plas=c. The silver nanopar=cles kill bacteria from any food previously stored in the bins, minimising harmful bacteria. Packaging examples
  14. 14. © CommNet 2013 Gecko feet are covered with nano-size hairs that use intermolecular forces, allowing the lizards to s=ck firmly to surfaces. By replica=ng this scien=sts have developed an adhesive that can seal wounds or patch a hole caused by a stomach ulcer. The adhesive is elas=c, waterproof and made of material that breaks down as the injury heals. Nano in nature
  15. 15. © CommNet 2013 The contribu=on of nanoscience research in agriculture and food will be in the following areas: •  food safety and biosecurity; •  material science; •  food processing and product development.
  16. 16. © CommNet 2013 Applica&ons of nanotechnology Agriculture Processing Products Nutri&on New pes=cides Microencapsula=on of flavours/aromas UV protec=on Neutraceu=cals Gene=c engineering Gela=on agents An=microbials Nutrient delivery Iden=ty preserva=on Nano emulsions Condi=on and abuse monitors Mineral/vitamin for=fica=on Sensors to measure soil condi=ons An=-caking High barrier plas=cs Drinking water purifica=on Sanita=on of equipment Security/an= counterfei=ng Sensory characteris=cs of supplements Contaminant sensors
  17. 17. © CommNet 2013 The future of nanotechnology Research is being carried out to develop nanocapsules containing nutrients that would be released when nanosensors detect a deficiency in your body. Nanomaterials are being developed to improve the taste, colour, and texture of foods. For example “interac=ve” foods are being developed that would allow you to choose which flavour and colour a food has!
  18. 18. © CommNet 2013 Modern biotechnologies involve making useful products from whole organisms or parts of organisms, such as molecules, cells, =ssues and organs. Recent developments in biotechnology include gene=cally modified plants and animals, cell therapies and nanotechnology. These products are not in everyday use but may be of benefit to us in the future. Conclusion
  19. 19. © CommNet 2013 Education Phase 4 Nanotechnology
  20. 20. Asian Food Regulation Information Service is a resource for the food industry. We have the largest database of Asian food regulations in the world – and it’s FREE to use. We publish a range of communication services (free and paid), list a very large number of food events and online educational webinars and continue to grow our Digital Library. Feel free to contact us anytime to talk about your specific requirements, offer comments, complaints or to compliment us. We look forward to hearing from you soon! www.asianfoodreg.com admin@asianfoodreg.com

×