Perishability

Quicklime and hydrated lime are reasonably stable compounds but not nearly as stable as their limestone antecedents. Chemically, quicklime is stable at any temperature, but it is extremely vulnerable to moisture. Even moisture in the air produces a destabilizing effect by air-slaking it into a hydrate. As a result, an active high calcium quicklime is a strong desiccant (qv). Probably hydrate is more stable than quicklime. Certainly hydrated lime is less perishable chemically because water does not alter its chemical composition. However, its strong affinity for carbon dioxide causes recarbonation. Dolomitic quicklime is less sensitive to slaking than high calcium quicklime, and dead-burned forms are completely stable under moisture-saturated conditions. 

Differentiated from the quickly perishable bakery foods are the dry bakery products such as cookies, crackers, pretzels, and ice cream cones. These latter items possess a much longer shelf life and may be distributed over a wider area from typically very large manufacturing faciUties. According to the 1987 Census of Manufacturers (2), there are 380 estabUshments producing these dry-type bakery foods, and the value added by such manufacturing facihties amounts to over 4 biUion. 

Butter is used in some, usually more expensive, bakery foods, and is prized for its flavor contribution. Fats are used in some products such as pie cmst, croissants, or puff pastry, up to 60%, based on flour. StabiHty of fats and oils in perishable items such as breads, cakes, or pastries is of no consequence because shelf life is so limited that rancidity does not occur. In cookies and crackers, however, stable fats must be used in the formula since prolonged shelf life could lead to product deterioration with fats that develop rancidity. 

Yeast (compressed and cream), and other perishable ingredients, are stored under refrigeration freezers are required for frozen eggs and fmits. 

Distribution costs depend on plant location, physical state of the material (whether liquid, gas, or sohd), nature of the material (whether corrosive, explosive, flammable, perishable, or toxic), freight rates, and labor costs. Distribution costs may be affected by any of the following new methods of materials handling, safety regulations, productivity agreements, wage rates, transportation systems, storage systems, quality, losses, and seasonal effects. 

Vocuum pocking equipment for coffee and other perishable foods or chemicol products... 

Certain tools are perishable i.e. they are consumed during the process. Others are reusable after maintenance and this is where adequate controls need to be in place. The tool control system needs to cover tool selection, set-up, tool change, and tool maintenance You will need procedures for withdrawing maintainable tools from service, performing the maintenance, and then putting the tools back into service. You need to build in safeguards that prevent worn tools being used and to replenish tools when their useful life has expired. 

M. Spivak. A Comprehensive Introduction to Differential Geometry, Vol. III. Berkeley Publish or Perish, 1979. 

Verderb, m. waste decay corrosion ruin, verderben, v.t. spoil, damage ruin, corrupt. — v.t. be spoiled, spoil, decay. — verdorben, p.a. spoiled, damaged, foul, rotten, verderblich, a. perishable destructive, injurious. 

Vergangenheit,/. the past prior treatment, vergknglich, a. transient, perishable, vergarbar, a. fermentable, attenuable. VergILrbarkelt, /. fermentability. verglLren, v.t. ferment attenuate (wort). — vergoren, p.a. fermented, (Brewing) finished. 

Perishable Food (meat, fish and produce) Moderate Fast. Refrigerated transport is very expensive. Refrigerated Truck/Container or air for Fresh Fish. 

Flowers Low Fast. Flowers are perishables with a very short shelf life. Air from South and Central America to the United States. 

VACUUM PACKING EOUIPMENT FOR COFFEE AND OTHER PERISHABLE FOODS OR CHEMICAL PRODUCTS, ETC. 

The heartwood of various timber species shows a wide range of resistance to biological attack. The natural durability of heartwood) is assessed by ground contact tests and according to survival, classified into five ctegories - very durable (>25 years), durable (15-25 years) moderately durable (10-15 years) non-durable (5-10 years) and perishable, (<5 years). 

The purpose of a cold store is to provide an insulated and refrigerated enclosure suitable for the handling and storage of perishable goods, at some predetermined temperature. 

A large amount of perishable food now travels by air. Since the cargo holds of airliners are not pressurized, the problem may be one of temporary protection against low temperatures, rather than of keeping the product cold. 

The transport of perishables by air does not require mechanical refrigeration, as low temperatures prevail at the heights flown. Fresh vegetables and flowers need to be protected from freezing, and produce will usually be in insulated containers. A feature of this traffic is the prompt and speedy handling at the airports. Coldrooms are provided at some airports to store produce immediately before and after transit. Solid carbon dioxide ( dry ice ) is used for shortterm cooling of airline passenger meals. 

International Institnte of Refrigeration, Recommendations for Chilled Storage of Perishable Produce, HR, Paris, 1979... 

Quality control is usually thought of in terms of control during production, and in some industries this may be all that is required. In the food industry such control must extend into the channels of distribution. The highly perishable nature of frozen foods makes this phase extremely important. It deserves a great deal more emphasis than it has received in the past. 

Because of their highly perishable nature, frozen fruits and vegetables are very sensitive to mishandling during distribution, especially in connection with maintaining proper conditions of temperature. 

The chemical industry affects virtually all aspects of our lives. Were it to disappear suddenly, we would find ourselves living again in the early nineteenth century without cars, airplanes, television, electric fights, most of our colorful clothing, most perishable food, most drugs and medicine, plastics, and all the rest of the modern conveniences that most of us take for granted. 

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