Presentation on Food Packaging Materials Presented By Md Billal Hossen Roll: Session: Faculty of Applied Science and Technology Department of Applied Nutrition and Food Technology Islamic University, Bangladesh.

Food packaging materials

Food Packaging materials An Overview o What is food packaging? o Requirements for packaging. o Principles of food packaging. o Function of food packaging. o Influence of food packaging on shelf life of food. o Major packaging materials –Paper board,Polyethene, laminated packaging materials, glass bottles, tin cans, aluminum and plastic cans, aluminum foils, bamboo, jute,wood etc. o Properties of packaging materials. o Use of packaging materials. o Primary, secondary, tertiary container. o Safety and environmental consideration of food packaging. o Losses of nutrient during and after packaging.

What is food packaging?  Packaging can be defined as a method to protect and contain the food with the aim of environmental impact of our consumption.  The Packaging Institute International(PII) defines packaging as the enclosure of products, items or packages in a pouch, bag, box, cup, can, tray, tube, bottle or other container form to perform one or more of the following functions: Containment, protection, preservation, communication, utility and performance. If the container perform one or more of the these function, it is considered as package

Food packaging requirements for fresh and processed food

principles ProtectionShelf life Recyclable Barrier to moisture Principles of food packaging

What properties should have packaging materials??

Function of food packaging

Major packaging materials Paper board Polyethylene Laminated packaging materials Glass bottles Tin cans Aluminum and plastic cans Aluminum foils Bamboo Jute Wood

Paper board

Properties of paperboard

Advantage and Disadvantage of paperboard

Polethylene Polyethylene is a polymer of ethylene(-CH2=CH2-). It is used as packaging materials popularly in Bangladesh. Polyethylene

Polyethylene consists of nonpolar, saturated, high molecular weight hydrocarbons. Polyethylene absorbs almost no water. The gas and water vapor permeability (only polar gases) is lower than for most plastics; oxygen, carbon dioxide and flavorings on the other hand can pass it easily. Chemical properties of polyethylene

Low Density Polyethylene (LDPE) e.g. Milk carton lining High Density Polyethylene (HDPE) e.g. Food packaging plastics Linear Low Density Polyethylene (LLDPE) e.g. Stretchable films Classification of polyethylene

Advantage and disadvantage of polyethylene

Laminated Packaging Materials

Glass bottles

Tin cans

Aluminum cans

Plastic cans

Aluminum foil Aluminum foil is made by rolling pure aluminum metal into very thin sheets, followed by annealing to achieve dead-folding properties (a crease or fold made in the film will stay in place), which allows it to be folded tightly.

Advantage and disadvantage of aluminum foil

Bamboo(Eco-friendly)

Jute

Wood(crates)

Advantage and disadvantage of Wood packaging

Types of Packaging

Primary, Secondary and Tertiary Container

The shelf life of a food is controlled by three factors: 1. Product characteristics, including formulation and processing parameters (intrinsic factors) 2. Environment to which the product is exposed during distribution and storage (extrinsic factors) 3. Properties of the package. 4.Packaging also increases shelf life of food. Effect of packaging on shelf life of food

Environmental consideration of food packaging If we can decompose or recycle the packaging materials, our environment will be safe from pollution…..

We can also save our planet through the use eco friendly packaging materials…

Losses of nutrient during and after packaging The main factors that affect nutrient loss include- Light, Oxygen, Moisture, PH, Heat. Nutrient loss during packaging  Packaging with heat denature proteins and destroy trypsin and amylase inhibitors in green peas and beans  Heat packaging also destroy thiaminase  Losses in protein bioavailability  Non enzymatic browning may also produce undesirable flavors and texture

Losses of nutrient after packaging  Fats of food in the presence of air also promote oxidation and rancidity  Water soluble vitamin especially vitamin-c and thiamine may be losses after packaging  Mineral matter may also decrease

References 1.“Food packaging materials introduction” ) 2.“Food packaging requirements” https// ) 3.“Properties required for food packaging materials” food-packaging-materials_fig1_ (Accessed ) food-packaging-materials_fig1_ (Accessed 4.“Functions of packaging” levels.html(Accessed ) 5.“Paperboard”[images] ) 6.“Advantage and Disadvantage of paperboard” ) 7.“polyethylene”[image] page/sunchips/sunchips-harvest-cheddar-flavored-multigrain-snacks(Accessed ) page/sunchips/sunchips-harvest-cheddar-flavored-multigrain-snacks(Accessed 8.“Advantage and disadvantage of polyethylene” _packaging_material(Accessed ) 9.“Laminated packaging materials”[image] packaging-film/(Accessed ) packaging-film/(Accessed

10. “Advantage and disadvantage of glass bottles” bottles/(Accessed ) 11. “Advantage and disadvantage of tin cans” cans(Accessed ) 12. “Advantage and disadvantage of aluminum cans” cans(Accessed ) 13. “Advantage and disadvantage of plastic cans” cans(Accessed ) 14. “Advantage and disadvantage of aluminum foil” foil(Accessed ) 15. “Advantage and disadvantage of bamboo” ) 16. “Advantage and disadvantage of wood and jute” and jute(Accessed ) 17. “types of packaging” of packaging(Accessed ) 18. “ Environmental consideration in packaging”[image] ) 19.Principles of food packaging page -479(requirement of food packaging). 20.Sivansankar B, Shuvash Dutta k, Principles of food preservation,4 th edition.