Pepperoni Roll

Until 1851, corn starch was used primarily for starching laundry and for other industrial uses.^{[citation needed]}

Uses[edit]

Although mostly used for cooking and as a household item, corn starch is used for many purposes in several industries, ranging from its use as a chemical additive for certain products, to medical therapy for certain illnesses.^{[citation needed]}

Culinary[edit]

Corn starch is used as a thickening agent in liquid-based foods (e.g., soup, sauces, gravies, custard), usually by mixing it with a lower-temperature liquid to form a paste or slurry. It is sometimes preferred over flour alone because it forms a translucent, rather than opaque mixture. As the starch is heated, the molecular chains unravel, allowing them to collide with other starch chains to form a mesh, thickening the liquid (Starch gelatinization). It is usually included as an anticaking agent in powdered sugar (icing or confectioner’s sugar).^{[citation needed]}

A common substitute is arrowroot starch, which replaces the same amount of corn starch.^[6]

Food producers reduce production costs by adding varying amounts of corn starch to foods, for example to cheese and yogurt.^[7]

Chicken nuggets with a thin outer layer of corn starch allows increased oil absorption and crispness after the latter stages of frying.^[8]

Non-culinary[edit]

Baby powder may include corn starch among its ingredients.^[9] Corn starch can be used to manufacture bioplastics and may be used in the manufacture of airbags.^{[citation needed]}

Adhesive can be made from corn starch, traditionally one of the adhesives that may be used to make paste papers. It dries with a slight sheen compared to wheat starch. It may also be used as an adhesive in book and paper conservation.^{[citation needed]}

Medical[edit]

Corn starch is the preferred anti-stick agent on medical products made from natural latex, including condoms, diaphragms, and medical gloves.^[10][11]

Corn starch has properties enabling supply of glucose to maintain blood sugar levels for people with glycogen storage disease.^[12] Corn starch can be used starting at age 6–12 months allowing glucose fluctuations to be deterred.^[13]

Manufacture[edit]

The corn is steeped for 30 to 48 hours, which ferments it slightly. The germ is separated from the endosperm and those two components are ground separately (still soaked). Next the starch is removed from each by washing. The starch is separated from the corn steep liquor, the cereal germ, the fibers and the corn gluten mostly in hydrocyclones and centrifuges, and then dried. (The residue from every stage is used in animal feed and to make corn oil or other applications.) This process is called wet milling. Finally, the starch may be modified for specific purposes.^[14]

Risks[edit]

Like many other powders, corn starch is susceptible to dust explosions. It is believed that overheating of a corn starch-based powder on 27 June 2015, initiated the Formosa Fun Coast explosion in Taiwan, despite warnings on the packaging indicating that the material is flammable.^[15]

Names and varieties[edit]

Called corn starch in the United States and Canada. The term corn flour refers to cornmeal that is very finely milled; or, to masa flour.^{[citation need}t is called cornflour in the United Kingdom,^[16] Ireland, Israel and some Commonwealth countries. Distinct in these countries from cornmeal.^{[citation needed]}