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Starch is a complex carbohydrate which is insoluble in water. Starch (in particular cornstarch) is used in cooking for thickening sauces. In industry, it is used in the
manufacture of adhesives, paper, and
textiles
Biochemistry
In biochemistry, starch is a mix of two polymeric carbohydrates (polysaccharides) called amylose and
amylopectin, in which the monomers are glucose units joined to one another head-to-tail. The
overall structure of amylopectine is not, however, simply a linear polysaccharide chain, since occasionally, two glucose units
are joined to one, forming a branch point.
Starch is often found in the fruit, seeds, or
tubers of plants. Examples include cornstarch, which is extracted from corn,
potatoes, wheat, and rice.
Household
Clothing starch or laundry starch is a liquid that is prepared by mixing a vegetable starch
in water (earlier preparations also had to be boiled), and is used in the laundering
of clothes. During the 19th century and early 20th century, it was stylish to
stiffen the collars and sleeves of men's shirts and the ruffles of girls' petticoats by applying starch to them as the
clean clothes were being ironed.
Aside from the smooth, crisp edges it gave to clothing, it served a practical purpose as well. Dirt and sweat from a man's neck and wrists would stick to the starch rather
than fibers of the clothing, and would easily wash away along with the starch. Then, after each laundering, the starch would be
reapplied.
Livestock
Animal starch is the common name of glycogen. It is not the
same as ordinary starch.
See also
External links
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