Cornstarch, or cornflour, is the
starchof the maizegrain, commonly known as corn. It is also grown from the endosperm, or white heart, of the corn kernel. It has a distinctive appearance and feel when mixed raw with wateror milk, giving easily to gentle pressure but resisting sudden pressure (see Non-Newtonian fluid). It is usually included as an anti-caking agent in powdered sugar(10X or confectioner's sugar). For this reason, recipes calling for powdered sugar often call for at least light cooking to remove the raw cornstarch taste.
The composition of cornstarch varies depending upon the feedstock, but it may be considered to be approximately 25%
amyloseand 75% amylopectin. [ [http://sg.answers.yahoo.com/question/index?qid=20070129085614AAUKhdK Yahoo! Answers - What is the chemical composition of Cornstarch? ] ]
Cornstarch is often used as a binder in
puddings and similar foods. Most of the packaged pudding mixes available in grocery stores include cornstarch. Cornstarch puddings can be made at home easily by using a double boiler. The most basic such pudding is made from milk, sugar, cornstarch and a flavoring agent.
Cornstarch can be used as a thickener in many recipes. Because cornstarch tends to form lumps when mixed with warm or hot water, it is best dissolved in cold water. It is also found in many
Cornstarch also has many uses in the manufacturing of environmentally friendly products. For example, in 2004, the Japanese company Pioneer announced a
biodegradable Blu-Raydisc made out of cornstarch. [ [http://www.cdrinfo.com/Sections/News/Details.aspx?NewsId=14322 Pioneer Makes Blu-Ray Discs from Cornstarch ] ] The use for the plastic is vast, as it is a renewable plastic that has the benefits of being biodegradable, used in injection molding, in extruders, and other common milling processes. [http://www.japan-cornstarch.com/hh_13.htm]
Cornstarch has been used as a replacement for
talcin baby powder.
A mixture of 1 part water to 1.5–2 parts cornstarch is a popular classroom demonstration of a
dilatant(shear-thickening) fluid, often called Oobleck. When struck, cut with a knife, or worked vigorously in the hands, it behaves like a pliable solid, but if allowed to sit for a few seconds, it flows as a viscous liquid. It can also be used for making highly flammable and explosive jellies.
The corn is steeped for 30 to 48 hours, which ferments it a little. The germ is separated from the
endospermand those two components are ground separately (still soaked). Next the starch is removed from each by washing. It is separated from the glutenand other substances, mostly in hydrocyclones and centrifuges, and dried. (The residue from every stage is used in animal feed and other products.) Finally the starch may be modified for specific purposes. [ [http://www.starch.dk/isi/starch/tm18www-corn.htm International Starch: Production of corn starch ] ]
Amylophagiais a condition involving the compulsive consumption of excessive amounts of purified starch, often cornstarch. [ [http://archfami.ama-assn.org/cgi/content/full/9/7/649 Arch Fam Med - Amylophagia Presenting as Gestational Diabetes, July 2000, Jackson and Martin 9 (7): 649 ] ]
Other names and varieties
* Called cornflour in
New Zealand, Australia, Israeland the UK.
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Look at other dictionaries:
Cornstarch — Corn starch ( st[aum]rch ), n. Starch made from Indian corn, esp. a fine white flour used for puddings, etc. [1913 Webster] || … The Collaborative International Dictionary of English
cornstarch — ☆ cornstarch [kôrn′stärch΄ ] n. a fine, granular or powdery starch made from corn: used in cooking and to make corn sugar, corn syrup, etc … English World dictionary
cornstarch — [[t]kɔ͟ː(r)nstɑː(r)tʃ[/t]] also corn starch N UNCOUNT Cornstarch is the same as cornflour. [AM] … English dictionary
cornstarch — noun Date: 1853 starch made from corn and used in foods as a thickening agent, in making corn syrup and sugars, and in the manufacture of adhesives and sizes for paper and textiles … New Collegiate Dictionary
cornstarch — /kawrn stahrch /, n. a starch or a starchy flour made from corn and used for thickening gravies and sauces, making puddings, etc. Also called, esp. Brit., corn flour. [1850 55, Amer.; CORN1 + STARCH] * * * … Universalium
cornstarch — noun A very fine starch powder derived from corn (maize) used in cooking as a thickener, to keep things from sticking, or as an anti caking agent … Wiktionary
cornstarch — corn·starch (kornґstahrch) see starch (def. 2) … Medical dictionary
cornstarch — corn|starch [ˈko:nsta:tʃ US ˈko:rnsta:rtʃ] n [U] AmE ↑cornflour … Dictionary of contemporary English
cornstarch — corn|starch [ kɔrn,startʃ ] noun uncount AMERICAN white flour made from CORN that you use in cooking to make liquids thicker … Usage of the words and phrases in modern English
cornstarch — n. starch made from corn (used as a thickening agent) … English contemporary dictionary