Week Name Description
Page Course outline
18 February - 24 February Page Expected learning outcome
Page 1.1.Introduction to Canning
Page 1.2.Definition of canning
Page 1.3.Steps involved in canning
Page 1.4.Advantages of canning
File Animation - Canning
25 February - 3 March Page Expected learning outcome
Page 2.1.Historical developments in canning technology
Page 2.2.Landmarks in the development of can manufacture
Page 2.3.Progress in thermal processing
Page 2.4.Developments in fish canning industry
4 March - 10 March Page Expected learning outcome
Page 3.1.What is unit operation?
File Tin Can Making
Tin can making
File Canning Operation
Canning operation
File Canning of mackerel-Animation
UNIT 3 - Unit operations in canning
Page 3.1.1.Raw materials and other ingredients for canning
Page 3.1.2.Desirable characteristics of marine products for canning
Page 3.1.3.Portions of fish used for canning
Page 3.1.4.Ingredients for canning
Page 3.1.4.1.Salt
Page 3.1.4.2.Vegetable oils
Page 3.1.4.3.Other ingredients
Page 3.2.1.1.Preparation of raw material for canning
Page 3.2.1.2.Washing
Page 3.2.1.3.Dressing
Page 3.2.1.4.Brining
Page 3.2.1.5.Precooking
Page 3.2.2.1.Filling of cans
Page 3.2.2.2.Methods of filling
Page 3.2.2.3.Precautions to be taken during filling
Page 3.2.2.4.Problems caused by over filling of cans
Page 3.2.2.4.1.Head space in cans
Page 3.2.2.4.1.1.Importance of maintaining the desired head space
Page 3.2.3.1.Exhausting of filled cans
Page 3.2.3.2.Definition for Exhausting
Page 3.2.3.3.Vacuum inside the can and its measurement
Page 3.2.3.4.Methods available for measurement of can vacuum
Page 3.2.3.5.Air inside food cans
Page 3.2.3.6.Purpose (or objectives) of exhausting
Page 3.2.3.7.Methods of Exhausting
Page 3.2.3.7.1. Heat /thermal exhausting
Page 3.2.3.7.2. Mechanical Exhausting
Page 3.2.3.7.2.1.Advantages
Page 3.2.3.7.1.2.Disadvantages
Page 3.2.3.7.3. Steam injection method of exhausting
Page 3.2.3.7.3.1.Advantages of steam injection method
Page 3.2.3.7.3.2.Ideal vacuum inside the can
Page 3.2.4.Can closing or seaming of cans
Page 3.2.4.1.Purpose of can closing /seaming
Page 3.2.4.2.Double seamers
Page 3.2.4.2.1.Inner construction/structure of completed a double seam
Page 3.2.4.2.2.Seam dimensions
Page 3.2.4.2.3.Factors affecting quality of double seam
Page 3.2.4.2.4.Testing of quality of a double seam
Page 3.2.4.2.5.Steps involved in Examination of double seam
Page 3.2.4.3.Other seam testing methods
Page 3.2.4.4.Seam defects
Page 3.2.5. Heat processing or retorting of cans
Page 3.2.5.1.Horizontal and Vertical retorting
Page 3.2.5.2.Precautions to be taken during heat processing
Page 3.2.5.3.Important objectives of retorting
Page 3.2.5.4.Factors which influence thermal process for cans
Page 3.2.5.5.Continuous type retorts
Page 3.2.5.5.1.Important advantages of continuous retorts/ sterilizers
Page 3.2.5.5.1.1.Hydrostatic sterilizer
Page 3.2.6.Can cooling, labelling and storage
Page 3.2.6.1.Defects arising due to improper cooling
Page 3.2.6.2.Mediums used for can cooling and the limits
Page 3.2.6.3.Methods of Cooling
Page 3.2.6.4.Quality of water in can cooling
Page 3.2.6.5.Labelling
Page 3.2.6.6.Storage of cans
File Can making machineries
UNIT 3 - Unit operations in canning

Can making machineries
11 March - 17 March Page Expected learning outcome
Page 4.1.Thermal Processing
Page 4.2.Classification of acidity foods
Page 4.3.Severity of thermal process
Page 4.3.1.Pasteurization
Page 4.3.2.Sterilization
Page 4.4.Relationship between acidity and severity of the process
Page 4.5.Heat Resistance of Microorganisms
Page 4.5.1.Measures of Heat resistance of Microorganisms
Page 4.5.2.Decimal reduction time
Page 4.5.3.Decimal reduction times (D values) of bacteria
Page 4.6.Time temperature relationship in bacterial destruction and “thermal death time” of bacteria
Page 4.6.1.Thermal Death Time (TDT)
Page 4.6.2.Thermal Death Time (TDT) curve on a semilog paper
Page 4.6.2.1.F. value of the organism
Page 4.6.2.2.F0 Value
Page 4.7.Heat penetration in canned foods
Page 4.7.1.Cold spot
Page 4.7.2.Typical heating and cooling curves of convection and conduction heating foods at the cold spot
Page 4.7.3.Equipments for the determination of heat penetration
Page 4.7.4.Method of determining heat penetration in the can
Page 4.8.General method of process calculation
Page 4.8.1.Calculation of Fo value
Page 4.8.2.Lethality of heat during heating and cooling
Page 4.8.3.Calculation of Fo Value
Page 4.9.High Temperature Short Time (HTST) Processing
Page 4.9.1.Two methods of applying HTST technique
Page 4.10.Aseptic Packaging
Page 4.10.1.Product sterilization
Page 4.10.1.1. Indirect heat exchangers
Page 4.10.1.2.Direct heat exchangers
Page 4.10.2.Sterilization of the packaging
Page 4.10.3.Maintaining sterile conditions during plant operation
18 March - 24 March Page Expected learning outcome
Page 5.1.Changes in canned foods and spoilage
Page 5.1.1.Changes taking place during processing
Page 5.1.1.1.Desirable changes
Page 5.1.1.2.Undesirable changes
Page 5.1.2.Changes during storage of processed cans
Page 5.2.Spoilage in canned foods
Page 5.2.1.Bulged (swollen) cans
Page 5.2.1.1. Flipper
Page 5.2.1.2. Springer
Page 5.2.1.3. Soft swell
Page 5.2.1.4. Hard swell
Page 5.2.2.Causes of spoilage in canned foods
Page 5.2.2.1.Physical causes
Page 5.2.2.2.Chemical causes
Page 5.2.2.3. Microbial causes
Page 5.2.2.3.1.Under-processing
Page 5.2.2.3.2.Post-processing spoilage
Page 5.2.2.4.Other causes of spoilage
Page 5.2.2.5.Problems (spoilages) in canned marine products
Page 5.2.2.5.1. Sulphide blackening or iron sulphide blackening
Page 5.2.2.5.2. Curd or adhesion
Page 5.2.2.5.3. Blue discolouration
Page 5.2.2.5.4. Honey combing
Page 5.2.2.5.5. Struvite formation
Page 5.2.2.5.6. Retort burn
Page 5.2.2.5.7. Case hardening
25 March - 31 March Page Expected learning outcome
Page 6.1.Canning of commercially important fishes
Page 6.1.1.General principles and methods followed in canning
Page 6.1.2.Fish canning
Page 6.2.Canning of individual category to fish
Page 6.2.1.Salmon and Salmon like fishes
Page 6.2.1.1.Specific problems encountered in salmon canning
Page 6.2.2.Tuna and tuna like fish
Page 6.2.2.1.Classification of tuna meat based on colour
Page 6.2.2.2.Changes taking place by precooking and cooling
Page 6.2.2.3.Various styles of packing of tuna meat in cans
Page 6.2.3.Canning of sardine and sardine like fish
Page 6.2.3.1.Canning of Shrimp
Page 6.2.3.2.Canning of Crab
Page 6.2.4.Canning of Molluscs
Page 6.2.5.Canning of Cephalopods
File Canning of mackerel-video
File Canning of shrimps in brine
1 April - 7 April Page Expected learning outcome
Page 7.1.Introduction to Packaging
Page 7.2.Early Packaging
Page 7.3.Functions of Packaging
Page 7.3.1.Protection and preservation
Page 7.4.Presentation of the product
Page 7.4.1.Labeling
Page 7.4.1.1.Name of Food
Page 7.4.1.2.Minimum durability
Page 7.4.1.3.Quantity
Page 7.4.1.4.Ingredients list
Page 7.4.1.5.Name and address of manufacturer
Page 7.4.1.6.Country of origin
Page 7.4.1.7.Character size
Page 7.4.1.8.Bar coding
Page 7.5.Levels of Packaging
Page 7.6.Packaging Materials
8 April - 14 April Page Expected learning outcome
Page 8.1.Metal Containers
Page 8.1.1.Advantages of metal containers
Page 8.1.2.Base plates and Tin plates
Page 8.1.3.Electrolytic chromium coated steel (ECCS)
Page 8.1.4.Advantages and disadvantages of ECCS over tin plate
Page 8.1.5.Aluminium
Page 8.1.5.1.Advantages of Aluminium as a food can
Page 8.1.5.2.Disadvantages
Page 8.1.6.Lacquers used in cans
Page 8.1.6.1.Three piece cans
Page 8.1.6.2.Two piece cans
Page 8.1.6.3.DRD Cans
15 April - 21 April Page Expected learning outcome
Page 9.1.Plastics for packaging
Page 9.2.1.Low Density Poly Ethylene (LDPE)
Page 9.2.1.1.Limitations of LDPE
Page 9.2.2. Ethylene vinyl acetate
Page 9.2.3.Linear Low density polyethylene (LLDPE)
Page 9.2.4. High density Polyethylene (HDPE)
Page 9.2.5.Ethylene propylene copolymers
Page 9.2.6.Polypropylene (PP)
Page 9.3. Vinyl Plastics
Page 9.3.1.Polyvinyl chloride (PVC)
Page 9.3.2.Polyvinylidene chloride (PVDC)
Page 9.3.3.Ethylene Vinyl alcohol Copolymer (EVOH)
Page 9.3.4.Polystyrene
Page 9.3.5.Expanded polystyrene (EPS)
Page 9.3.6.Polyester or Polyethylene terephthatate (PET)
Page 9.3.7.Polyamides or Nylons
Page 9.3.7.1.Important properties of Nylon
Page 9.3.8.Regenerated cellulose film
Page 9.3.9.Each film designated using codes
22 April - 28 April Page Expected learning outcome
Page 10.1.Manufacture of plastic packages
Page 10.1.1.Making of containers and bottles from plastics
Page 10.1.1.1.Extrusion
Page 10.1.1.1.1.Extruding the sheet
Page 10.1.1.1.2.Co-extruding the sheet
Page 10.1.1.2.Thermoforming
Page 10.1.1.3.Injection Moulding
Page 10.1.1.4.Blow moulding
Page 10.1.2.Flexible packaging from plastics
Page 10.1.2.1.Film blowing
Page 10.1.2.2.Solvent casting
Page 10.1.2.3.Calendaring
Page 10.1.2.4.Coating of plastics
Page 10.1.2.5.Vacuum metalizing
Page 10.1.2.6.Dispersion and lacquer coating
Page 10.1.2.7.Extrusion coating
Page 10.1.2.8.Lamination
Page 10.1.2.8.1.Extrusion laminating
Page 10.1.2.9.Co-extrusion
29 April - 5 May Page Expected learning outcome
Page 11.1.Heat sealing
Page 11.1.1.1. Hot plate/hot bar/continuously heated hot jaw sealing
Page 11.1.1.2.Hot wire sealing
Page 11.1.1.3.Impulse sealing
Page 11.1.1.4.High frequency heat sealing
Page 11.1.2.Type of heat seals
Page 11.1.3.Criteria for proper heat sealing and to produce a reliable seal
Page 11.1.4.Crimping in heat seals
Page 11.1.5.Cold Seal
6 May - 12 May Page Expected learning outcome
Page 12.1.Additives in Plastics
Page 12.1.1.Anti block agents
Page 12.1.2.Antioxidants
Page 12.1.3.Anti-static additives
Page 12.1.4.Brightness
Page 12.1.5.Colourants
Page 12.1.6.Fillers
Page 12.1.7.Flame retardants
Page 12.1.8.Foaming agents
Page 12.1.9.Heat stabilizers
Page 12.1.10.Plasticizers
Page 12.1.11.Slip additives
Page 12.1.12.U.V. Scrumming agent
Page 12.1.13.U.V. Stabilizers
Page 12.1.14.Compounding
13 May - 19 May Page Expected learning outcome
Page 13.1.Paper and Board
Page 13.1.1.History of paper
Page 13.1.2.Raw materials for paper and board
Page 13.1.3.Methods of producing wood pulp
Page 13.1.4.Coatings used in paper and carton boards
Page 13.1.5.Boards for food packaging
Page 13.1.5.1.Carton board and carton making
Page 13.1.5.1.1.Definition of carton
Page 13.1.5.1.2.Carton making
Page 13.1.5.1.2.1.Creasing and cutting operation on cartons
Page 13.1.5.1.2.2.Creasing conditions
Page 13.1.5.1.3.Types of cartons
Page 13.1.5.1.3.1.Tray type construction
Page 13.1.5.1.3.2.Tube style
Page 13.1.5.2.Corrugated Fibre Board Boxes
Page 13.1.5.2.1.Wall boards
Page 13.1.5.2.2.Type of papers used as liners
Page 13.1.5.2.3.Types of flutes
Page 13.1.5.2.3.1.Mechanical strength characteristics of flute types
Page 13.1.5.2.4.Principle operations in board and box making
Page 13.1.5.2.3.Strength of the corrugated fibreboard box
Page 13.1.5.2.4.Selection criteria of corrugated fibre board containers
Page 13.1.5.2.5.Selection of style and shape
Page 13.1.5.2.6.Advantages of corrugated fibre board containers
Page 13.1.5.2.7.Disadvantages
20 May - 26 May Page Expected learning outcome
Page 14.1.Glass containers
Page 14.1.1.Definition of Glass
Page 14.1.2.Chemical composition of Glass
Page 14.1.3.Raw materials for the manufacture of glass
Page 14.1.4.Colouring compounds
Page 14.1.5.Manufacture of glass
Page 14.1.6.Flaws or defects
Page 14.1.7.Container types made out of glass
Page 14.1.8.Physical properties of Glass Bottles
Page 14.1.9.Advantages of using glass in food packaging
Page 14.1.10.Disadvantages
Page 14.1.11.Closures for Glass Containers
Page 14.1.12.Functions of closures
Page 14.1.13.1.Screw cap
Page 14.1.13.2.Roll-on closures
Page 14.1.13.3.Lug cap
Page 14.1.13.3.1.Main advantages of lug cap
Page 14.1.13.4.Crown cap or crown cork
Page 14.1.13.5.Snap-on-cap
Page 14.1.13.6.Centre pressure caps
Page 14.1.13.7.Crimp on type
Page 14.1.13.8.Bottle closing operation
Page 14.1.13.9.Factors to be considered while designing a closure
27 May - 2 June File 1. Canning Machineries and Equipments
File 2. Retorts and its operation
File 3. Examination of can double seam
File 4. Study of the relationship between can closing temperature and resultant vacuum
File 5. Study of relationship between head space and resultant vacuum
File 6. Cut-out tests for Canned Fishery products
File 7. Study of heat penetration in canned fish
File 8. Canning of Mackerel in natural style (Salmon style)
File 9. Canning of oil sardine in oil / brine
File 10. Canning of Seer fish in oil / tomato sauce
File 11. Canning of shrimps (dry pack)
File 12. Canning of shrimps in brine (wet pack)
File 13. Canning of clams in brine / oil
File 14. Canning of green mussel in Masala / oil / brine
File 15. Canning of crab meat
File 16. Canning of fish in curry
File 17. Canning of Indian mackerel in brine or oil
File 18. Canning of Mackerel in tomato sauce
File 19. Canning of fried sardines in tomato sauce and oil
File 20. Canning of pomfrets in oil / tomato sauce
File 21. Canning of mrigala (Indian major carps) fillets
3 June - 9 June Page References