Food Preservation and Packaging

Chapter 29

Introductory Foods, 13th ed.Bennion and Scheule

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Causes of Spoilage

Microorganisms Enzymes Desiccation Bruising Oxidation

Introductory Foods, 13th ed.Bennion and Scheule

© 2010 Pearson Higher Education,Upper Saddle River, NJ 07458. • All Rights Reserved.3

Methods of Preservation

Temperature control Moisture control Preservatives Irradiation

Introductory Foods, 13th ed.Bennion and Scheule

© 2010 Pearson Higher Education,Upper Saddle River, NJ 07458. • All Rights Reserved.4

Temperature Control

Cold Refrigeration and controlled atmosphere Freezing

Thermal processing Canning

Retort packages Pasteurization

Introductory Foods, 13th ed.Bennion and Scheule

© 2010 Pearson Higher Education,Upper Saddle River, NJ 07458. • All Rights Reserved.5

Moisture Control

Drying

Freeze-drying

Introductory Foods, 13th ed.Bennion and Scheule

© 2010 Pearson Higher Education,Upper Saddle River, NJ 07458. • All Rights Reserved.6

Use of Preservatives

Acids Sugar Spices Other preservatives

Introductory Foods, 13th ed.Bennion and Scheule

© 2010 Pearson Higher Education,Upper Saddle River, NJ 07458. • All Rights Reserved.7

Irradiation

Irradiation Reduces microbial levels Destroys pathogens Extents shelf life Removes insect infestation

Approved and regulated by FDA

Introductory Foods, 13th ed.Bennion and Scheule

© 2010 Pearson Higher Education,Upper Saddle River, NJ 07458. • All Rights Reserved.8

Irradiation

50 years of research

Food irradiated by Gamma rays produced by cobalt 60 and cesium 137 Beta rays produced by electron beams X-rays

Irradiated food is NOT radioactive

Irradiated food is labeled

Introductory Foods, 13th ed.Bennion and Scheule

© 2010 Pearson Higher Education,Upper Saddle River, NJ 07458. • All Rights Reserved.9

Packaging of Food

Functions Protection Containment Marketing and Information

Regulation of packaging FDA Safety of packaging

Migration of chemicals

Introductory Foods, 13th ed.Bennion and Scheule

© 2010 Pearson Higher Education,Upper Saddle River, NJ 07458. • All Rights Reserved.10

Packaging Materials

Paper and paperboard Plastics Metals Combination of materials Edible films and coatings

Introductory Foods, 13th ed.Bennion and Scheule

© 2010 Pearson Higher Education,Upper Saddle River, NJ 07458. • All Rights Reserved.11

Methods of Packaging

Aseptic Modified atmosphere Sous vide

Introductory Foods, 13th ed.Bennion and Scheule

© 2010 Pearson Higher Education,Upper Saddle River, NJ 07458. • All Rights Reserved.12

Packaging Waste Management

Pay-as-you throw Source reduction Reuse Recycle Combustion Landfills