Vitamins: Functions and their sources

Vitamin refer to essential dietary factor which is required by an organism in small amounts and whose absence results in deficiency diseases. Vitamins are important for their regularity and protective functions. Unlike most other nutrients, they are required in very small amounts. But it is necessary to provide these in diet because many of them cannot be synthesized in our body. Excess intake of any vitamin however is harmful. Vitamins are generally classified on the basis of their solubility.

  1. Water soluble vitamin: vitamin C, B complex
  2. Fat soluble vitamin: vitamin A, D, E and K

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Feed Plate and Various Feed Conditions

The plate where feed is administered is called feed plate. In feed plate, the liquid rate or vapor rate or both may change depending upon thermal condition of feed.

Cold feed: the entire feed stream adds to the liquid flowing down the column. In addition, some vapor condenses to heat the feed to boiling point. This makes the liquid flow even greater in stripping section and decrease flow of vapor in rectifying section. V < V̅ and L̅ > L +F. Read more