Bøger af Day

This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.

This is an EXACT reproduction of a book published before 1923. This IS NOT an OCR'd book with strange characters, introduced typographical errors, and jumbled words. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.

1 Introduction.- 1.1 Historical background.- 1.2 Definitions, terminology and abbreviations.- 1.2.1 Modified atmosphere packaging (MAP).- 1.2.2 Controlled atmosphere packaging (CAP).- 1.2.3 Gas packaging.- 1.2.4 Vacuum packaging (VP).- 1.2.5 Gas cocktail.- 1.2.6 Controlled atmosphere storage (CAS).- 1.2.7 Hypobaric storage.- 1.3 Methods of atmosphere modification in packaged foods.- 1.3.1 Vacuum packaging.- 1.3.2 Gas packaging.- 1.4 Gases used in MAP.- 1.4.1 Oxygen (O2).- 1.4.2 Carbon dioxide (CO2).- 1.4.3 Nitrogen (N2).- 1.4.4 Carbon monoxide (CO).- 1.4.5 Other gases.- 1.4.6 Gas mixtures.- 1.4.7 Sources of gases.- 1.5 Microbiology of MAP.- 1.5.1 Effects on spoilage microorganisms.- 1.5.2 Effects on pathogenic microorganisms.- 1.5.3 Storage temperatures.- 1.6 Advantages and disadvantages of MAP.- 1.6.1 Advantages of MAP.- 1.6.2 Disadvantages of MAP.- References.- 2 The market.- 2.1 Introduction.- 2.2 History of controlled atmosphere/modified atmosphere/vacuum packaging.- 2.3 Europe.- 2.3.1 Fresh meats.- 2.3.2 Fresh vegetables.- 2.3.3 Prepared foods.- 2.4 United States/Canada.- 2.4.1 Red meat.- 2.4.2 Poultry.- 2.4.3 Fruit and vegetables.- 2.4.4 Soft bakery goods.- 2.4.5 Pasta.- 2.4.6 Pizza.- 2.4.7 Salads.- 2.4.8 Other products.- 2.5 Conclusion.- Further reading.- 3 Packaging machinery.- 3.1 Historical development.- 3.2 Gases.- 3.3 Packaging material.- 3.4 Packaging machines.- 3.5 Chamber machines.- 3.5.1 Thermoforming system.- 3.5.2 Preformed container machines.- 3.6 Flexible pillow wrapping machines.- 3.6.1 Horizontal form-fill-seal machine systems.- 3.6.2 Inverted horizontal form-fill-seal machine systems.- 3.6.3 Vertical form-fill-seal systems.- 3.7 Fail-safe assurance.- 3.8 Automatic product feeding systems.- 3.9 Conclusion.- Appendix-Packaging systems for MAP.- 4 Films for MAP of foods.- 4.1 Introduction.- 4.2 Plastic films commonly used in MAP.- 4.2.1 Low density polyethylene (LDPE).- 4.2.2 Linear low density polyethylene (LLDPE).- 4.2.3 High density polyethylene (HDPE).- 4.2.4 Polypropylene (PP).- 4.2.5 Ionomers.- 4.2.6 Ethylene vinyl acetate copolymer (EVA).- 4.2.7 Polyvinyl chloride (PVC).- 4.2.8 Polyvinylidene chloride (PVdC) copolymer.- 4.2.9 Polystyrene (PS).- 4.2.10 High impact polystyrene (HIPS).- 4.2.11 Barex.- 4.2.12 Polyamides.- 4.2.13 Polyethylene terephthalate (polyester or PET).- 4.2.14 Ethylene vinyl alcohol (EVOH) - trade name EVAL.- 4.2.15 Coextruded orientated polypropylene (COPP).- 4.2.16 Other films.- 4.3 Combinations of films.- 4.3.1 Laminates, coextrusion and extrusion coating.- 4.3.2 Specifications.- 4.4 Typical specifications for MAP use.- 4.4.1 Horizontal and vertical form-fill-seal systems.- 4.4.2 Bulk gas packaging (BGP).- 4.4.3 Microwavable packs.- 4.4.4 Technical problems.- 4.5 Seal system and quality.- 4.5.1 Peelable seals.- 4.5.2 Antifog (AF) properties.- 4.5.3 Printing and labelling.- 4.5.4 Specifications.- 4.6 Legislation and the environment.- 4.7 Oil use and energy.- Appendices.- Appendix I Antifogging properties.- Appendix II Draft specification for CAP reels.- Appendix III Recommended storage conditions for CAP materials.- Appendix IV Calculations.- Reference.- 5 Quality control of MAP products.- 5.1 Introduction.- 5.2 Safety and quality of MAP foods.- 5.3 Applications of hazard analysis critical control point (HACCP) to MAP foods.- 5.4 Total quality control and quality of MAP foods.- 5.5 Combining hazard analysis critical control point and total quality control.- 5.6 Quality control testing.- 5.6.1 Film faults.- 5.6.2 Headspace gas analysis.- 5.6.3 Seal strength.- 5.6.4 Temperature checks.- 5.7 Regulatory aspects of MAP foods.- 5.8 Summary.- References.- 6 Fruit and vegetables.- 6.1 Introduction.- 6.1.1 Controlled atmosphere storage vs. MAP.- 6.1.2 Advantages and disadvantages of MAP.- 6.1.3 Methods of creating modified atmosphere conditions.- 6.1.4 Optimal equilibrium gas levels.- 6.2 Background information.- 6.2.1 Factors affecting shelf-life.- 6.2.2 Intrinsic properties of fresh ...

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