PPT-FREEZING FOODS

Why freeze food Freezing preserves foods by preventing harmful bacteria from growing If frozen correctly foods will keep most of their nutrients color texture and flavor Hints for freezing Cool ingredients. Fr eezing preserves food by either stopping microbes bacteria fungi etc from multiplying or halting the foods own enzyme activity that would otherwise cause the food to rot This fact sheet outlines some safety recommendations about handling and thaw Help Desk: 800-442-4614. Phone in to today’s program. Toll:  630-424-2356. Toll Free:  855-947-8255. Passcode. :  6774570#. Program will be archived:. http://fyi.uwex.edu/safepreserving/. . Home Freezing of Foods. Refrigeration and freezing: these are the most popular ways. Refrigeration slows bacteria to a crawl to prevent spoiling. Freezing stops bacteria action completely. It can be used on all foods with little effect to the taste, except for fruit. . The use of low temperatures to preserve foods is based on the fact that the activities of microorganisms can be slowed at temperatures above freezing and generally stopped at subfreezing temperatures.. supercooled. water. Exponential . dependence arises from energy term. T dependence from this term. Evaluating “threshold” conditions. if we have a certain volume . V. d. . of . supercooled. water, say that of a cloud droplet or a raindrop, at what temperature should we expect it to freeze? . Principles of Food Processing. Prepared by:. TA/ Mohamed Ibrahim Younis. Moisture Content. Food. Bound . Water. Free . Water. Freezing. Freezing is the process of converting the free water inside the food material to ice crystals. http://nchfp.uga.edu. This slide show is a photographic description of steps in freezing . applesauce at . home. . Additional information . on freezing . fruits and fruit products . at home can be found in So Easy to Preserve, . http://nchfp.uga.edu. This slide show is a photographic description of steps in freezing . applesauce at . home. . Additional information . on freezing . fruits and fruit products . at home can be found in So Easy to Preserve, . Help Desk: 800-442-4614. Phone in to today’s program. Toll:  630-424-2356. Toll Free:  855-947-8255. Passcode. :  6774570#. Program will be archived:. http://fyi.uwex.edu/safepreserving/. . Home Freezing of Foods. Freezing . Fruits and Vegetables. Empowerment Through Education. Today’s Topics. Basics of freezing fruits and vegetables. Preventing fruits from discoloring. Blanching vegetables. Packaging frozen fruits and vegetables. Ch. 28. Objectives:. Describe the effect of freezing on foods. Identify and describe commercial freezing methods. Demonstrate how to choose and package foods for freezing at home. Explain the role of sublimation in freeze-drying. Drying. Irradiation. Chemical preservation. Food Preservation. Food preservation involves the action taken to maintain foods with the desired properties or nature for as long as possible.. The main reasons for food preservation are to overcome inappropriate planning in agriculture, produce value-added products, and provide variation in diet.. Cause of spoilage:. Spoilage may be due to one or more of the following:. 1. Growth and activity of microorganisms. 2. Insects. 3. Action of the enzymes of the plant or animal food.. 4. Purely chemical reactions i.e., those not . To understand why food is processed or preserved. To state the aims of preserving foods. To outline the different methods of preserving foods . To develop a set of guidelines for home freezing . Processed Foods.