Nanotechnology IN FOOD PACKAGING ( NANOCOMPOSITE)

Nanotechnology IN FOOD PACKAGING ( NANOCOMPOSITE)

1. Nanotechnology in food packaging PRESENTATION ON:- DEPARTMENT OF FOOD ENGINEERING AND TECHNOLOGY

2. HISTORY “ THERE’S PLENTY ROOMS AT THE BOTTOM” ~Richard Feynman~ Father Of Nanotechnology c 1959 1974 - “NANOTECHNOLOGY” Term use. ~ Nario Taniguchi~ 1985 - “NANOTECHNOLOGY” discovered. ~Bucky Ball~ 1986- Develop and popularized the concept molecular nanotechnology. ~K. Erick Drexler~

3. INTRODUCTION:-

4. Food packaging trend:- Nanotechnology in India Nanoscience And Technology Mission (NSTM) in 2012-2017 phase 2 , At a total cost ₹ 650 crore .

5. What is nanotechnology:-

6. TYPES OF NANOMATERIAL:-

7. TYPES OF NANOPARTICLE BASED ON DIMENSION:- ZERO DIMENSION Eg. , quantum dots, metal nano particles ONE DIMENSION Eg. , many thin coatings, nanolayer clay TWO DIMENSION Nanowires, nanotubes, nanocellulose THREE DIMENSION Metal oxide nanoparticle

8. Engineered nanomaterials in food packaging Nano silver Nano-silica Nano clay Nano sized selenium Nano-starch Nanoscaled cellulose Titanium nitrite( TiN ) Titanium dioxide(TiO2) Zinc oxide( ZnO ) Iron oxide(Fe2O3) Magnesium oxide(MgO) Carbon nanotubes(CNTs)

9. NANO SILVER Silver ion (Ag+) binds to the bacterial cell wall Blocking transport of substances in and out of the cell. Silver ions are transported into the bacterial cell , block the respiratory system Destroying energy production Silver ion interact with DNA , inhibit bacterial cell division Stopping replication Specific migration limit:- 0.5 mg/kg food

10. Nano silica Used for hydrophobic coatings- self cleaning materials. Improves:- oxygen and moisture barrier, aroma preservation, transparent, good printability and laminating machinability , eco-friendly , time invariant transparency (excellent mechanical and optical properties). Nano clay Nanoparticles of layered mineral silicates and recognized as GRAS. Act as antimicrobial against gram+ and gram- Commercial clays:- Montmorillonite(MMT), Bentonite (Altered nanoclay :- Closite 30B and Closite 20A) 1 st example → Nylon-6 MMT hybrid material….by Toyota Corp, 1986 nanoparticles of layered mineral silicates

11. Why use montmorillonite Two tetrahedral silica layer → separated by octahedral alumina layer. Degree of isomorphous →0.5-1.3 Hydrophilic Compatible with most organic polymer Easily functionalize by grafting of polymer chain.

12. Nano-sized selenium Nano-starch Starch is a natural, renewable, biodegradable , and non-toxic polysaccharide. Discrete and partially crystalline granules. Mostly composed of two glycosidic macromolecules (linear amylose, branched amylopectin) Nano selenium was incorporated into flexible PET-LDPE and performed good antioxidant activity – Retard oxidation Non migrating performance

13. Nano scaled cellulose Nano-titanium nitride (T i n) Used for food contact plastic. Eg , PET bottles, Transforming tray Used as nucleating agent or reheat additive. Accelerate crystallization rates. Usage limit:- 20mg/kg Known as nanofibers, micro fibril, cellulose nano whiskers Consist of crystalline and amorphous strings. Crystalline region makes a stable polymer. Nano-dioxide (t i o2) Thermostable, inert, non toxic, non-volatile, non flammable, insoluble. Higher UV-blocking properties. Biocidal effect. Incorporated in milk PET/HDPE bottles. Leakage indicator

14. Zinc oxide ( Z n o ) Antimicrobial activity, UV light absorber. Specific migration limit:- 5mg/kg Iron oxide (F e 2o3) As a colourant, health supplement, treatment for water, oxidation. Specific migration limit:- 48kg/mg Magnesium oxide ( m g o ) Reinforcement in PLA.

15. CARBON NANOTUBES(CNT s ) Composed into PVOH, PP, Nylon, PLA, etc. Two types:- A) single atom thick B) several concentric nanotubes Both- high elastic & high tensile strength

16. Classification based on composition:-

17. NANOCOMPOSITE:- At least one organic or inorganic filler

18. Classification of nanocomposite

19. Polymer nano-composite Polymer matrix + nanomaterials = PNCs Polymer :-1. polyolefins – PP, HDPE, LDPE, etc.. 2. polyethylene terephthalate(PET) 3. Polystyrene(PS) 4. polyvinyl chloride (PVC) 5. Polyvinylidene chloride (PVDC)

20. Nanocomposite characteristics:- -Polymer nanocomposite incorporated with nanoclay for good barrier -nanocomposite barrier against visible and UV light -the nanoclay material montmorillonite (known as bentonite)-relatively cheap and widely available -nanoscaled layered structure -retrict gas permeation - nanoclay concentration 2-5% -used for processed meats, cheese, confectionery, cereals, boil-inthe-bag foods ,co-extrusion processes for the manufacture of bottles for beer and carbonated drinks -nanoclay made of both thermoset and thermoplastic polymer

21. available clay nanocomposites:-

22. Nano-structured Coatings: -

23. Bio-based Polymers: -

24. Surface biocide:- Used in reusable containers and freezers,

25. SYNTHESIS of nanocomposite

26. Antimicrobial activity of nanoparticles

27. Active nano packaging AgNPs incorporated in to cellulose pads for use in modified atmosphere packaging of fresh beef.

28. Intelligent packaging Nanosensors :- 1. gas sensors:- nano sized TiO2 or SnO2 particles + redox-active dye (methylene blue) Sensor for moisture content:- carbon coated nanoparticles in film. CO2 sensor:- fluorophore-encapsulated polymer nano beads.

29. bioplastics PLA, Polyamides, Improvement Advantage Poor mechanical strength High permeability (gas & water) Low heat distortion temperature Poor resistance Better biodegradability, barrier gas & vapour. Mechanical quality & thermal quality Antioxidant, O2 scavenging & antimicrobial. Improved water resistance of cellulose bioplastic- by adding nanocardanol particle.(Kiuchi,2006)

30. Bio plastic preparation

31. Commercially available indicator Pathogen detector

32. Toxic effects of nano-material

33. CONCLUSION T he potential benefits, the safety and environmental impact of nanotechnology in food packaging. E nhanced barrier properties, improved mechanical strength, and increased resistance to environmental factors . Import and export is increasing.