Define the fluidized dryers, Biology

Define the Fluidized Dryers?

Fluidization occurs when a flow of fluid upwards through a bed of particles (ranging from fine powders to particulate foods such as diced carrots) reaches sufficient velocity to support the particles without carrying them away in the fluid stream. The bed of particles then assumes the characteristics of a boiling liquid, hence the term fluidization. The fluid responsible for fluidization may be a gas or air the choice of which will confer different properties on the fluidizing system.

Fluidized bed dryers can be used for either of the following situations:

a) Finish or final drying of products partially dried by other techniques; for example, blueberries dried osmotically are then dried at 170°C for 4 minutes in a high temperature fluidized bed.

b) Drying foods completely - examples of this include the drying of grains, soybeans, peas, beans and vegetables.

The complete drying of foods in fluidized beds may be carried out either by the use of a "high temperature short time" process or by a more gradual process at a lower temperature. Delicate fruits such as blueberries are dried by the HTST process (170°C for 8 minutes), whereas oil seeds are dried over a longer period of time (55-65°C for 4 hours). This longer, cooler process is required so that the quality of the oil and the germination characteristics of the grain are not affected.

Posted Date: 7/2/2013 3:13:26 AM | Location : United States

Related Discussions:- Define the fluidized dryers, Assignment Help, Ask Question on Define the fluidized dryers, Get Answer, Expert's Help, Define the fluidized dryers Discussions

Write discussion on Define the fluidized dryers
Your posts are moderated
Related Questions
E m u l s io n products Ground meat products such as sausages, patties and luncheon meats are emulsion based products and their quality depends upon the ability of lean m

Who is Aristotle - the Stagirite? The ptodigious activity of Aristotle (384-323 B.C.) marks the climax of the Golden Age of Greece. The very existence of his works proves not s

Q. What do you mean by Polyphagia? Increased Hunger (Polyphagia): As patient is losing more sugar in the urine, he feels hungry very soon and tends to take more food. It is cal

Q. List some points to keep in mind while counselling? 1. Judgment Do not be judgemental. Be a patient listener. Assess and make decision. 2. Patience and Acceptance

Congenital disorders Poor fertilizing quality of semen could be due to impaired spermatogenesis. When such a condition is due to genetic congenital causes the treatment is not

Occurrence of vitamin B 12 Vitamin B 12 is one of the cobalamin, a group of active principles widely occurring in nature. Vitamin B 12 is present especially in liver, kidney

Q. Define Clostridium perfringens-associated gastroenteritis? Clostridium perfringens-associated gastroenteritis is a food borne disease which is frequently reported and is

EXCRETIO N IN COCKROACH- Animal is uricotelic. Excretory organs are malphighian tubules. 60-150 in 6-8 groups. In each group 10-15. Yellow coloured, blind tube, open in gut

Ink prints of leaves Place a small quantity of printer's ink on a sheet of glass or a tile. Roll the ink into a thin yet layer with a rubber roller. Place a leaf, vein side up,

Explain some Advantages of Most Probable Number? 1. It is simple and method of choice for determining fecal coliform densities. 2. Results of different laboratories are comp