Research topic:dextrin

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dextrin

From: The Columbia Encyclopedia, Sixth Edition | Date: 2008 | Copyright information

dextrin any one of a number of carbohydrates having the same general formula as starch but a smaller and less complex molecule. They are polysaccharides and are produced as intermediate products in the hydrolysis of starch by heat, by acids, and by enzymes. Their nature and their chemical behavior depend to a great extent on the kind of starch from which they are derived. For example, some react with iodine to give a reddish-brown color, others a blue, and still others yield no color at all. For commerical use dextrin is prepared by heating dry starch or starch treated with acids to produce a colorless or yellowish, tasteless, odorless powder which, when mixed with water, forms a strongly adhesive paste. It is used widely in adhesives, e.g., for postage stamps, envelopes, and wallpapers, and for sizing paper and textiles.

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dextrin
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limit dextrin
Book article from: A Dictionary of Food and Nutrition limit dextrin When a branched polysaccharide such as glycogen or amylopectin is hydrolysed enzymically...branch point is reached. The hydrolysis then stops, leaving what is termed a limit dextrin; further hydrolysis requires a different enzyme. Read more
dextrins
Book article from: A Dictionary of Food and Nutrition dextrins A mixture of soluble compounds formed by the partial breakdown of starch by heat, acid or enzymes ( amylases ). Formed when bread is toasted, and nutritionally equivalent to starch. Read more
dextrin, limit
Book article from: A Dictionary of Food and Nutrition dextrin, limit See limit dextrin . Read more
dextrin
Book article from: A Dictionary of Nursing dextrin ( deks -trin) n. a carbohydrate formed as an intermediate product in the digestion of starch by the enzyme amylase. Dextrin is used in the preparation of pharmaceutical products and surgical dressings. Read more

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