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Crude fat containing non glyceride components like mucilages, gums, hydrocarbons, free fatty acids, pigments, sterols along with oil are prone to rancidity. Therefore, impurities should be removed prior to storage and distribution of fats and oil. Purification steps normally involves
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.
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
Fig: Material balance diagram for bottom plate and reboiler (source: Unit Operation of chemical engineering; W.L McCabe ) Read more
Fig: Material balance diagram for top plate (a), total condenser (b) and partial condenser (c). source: Unit Operation of chemical engineering; W.L McCabe Read more
Stages are built to maximize contact between incoming vapor and incoming liquid. During contact, some of the light component in entering liquid is vaporized and leaves with vapor. At the same time, some of the heavy component in the entering vapor condenses and leaves with the liquid. Read more
Food with ingredient that are medically beneficial beyond their basic nutritional value are called functional food. It is similar in appearance to conventional food, consumed part of normal diet and has demonstrated physiological benefit and reduces the risk of chronic disease beyond basic nutritional function. Examples include tomatoes, broccoli, citrus fruits, leafy vegetables and many more. People are starting to look at food as a perception for health. Functional food in highest demand include those containing omega -3 fatty acid, glucosamine and probiotics.