FOOD 2010 Lecture Notes - Lecture 8: Liquid Nitrogen, Heat Sealer, Fiberboard

• School: University of Guelph
• Department: Food Science
• Course: FOOD 2010
• Professor: Massimo Marcone

Document Summary

Identity, quantity, ingredient content, usage, storage information: opportunity for marketing as well. Metal: tin cans, aluminum cans, tin foil, corrosion from exposure to acidic foods is a major disadvantage, problem solved by providing a coating on the inside of foil and cans, metals aren"t suited to microwave. Glass: transparency and inert to chemical reactions with food (widely compatible, potential for shattering, heavy weight higher costs. Paper and fiberboard: commonly used for outer wrappings, boxes and bags, when used as primary containers, coatings on paper must be non-toxic and non-reactive (food grade) Plastics: composed of polymers which can be formed into trays, rims and a variety of shapes, very versatile but gas permeability, migration of plastic into food, and temperature exposure limits are weaknesses. Glass: glass is used today primarily for home canning, chemically inert, non-corrosive and recyclable material, but glass breaks and is heavier than other materials.