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Corn starch mixed in water. Cornflour, cornstarch, maize starch, or corn starch (American English) is the starch derived from corn grain. [2] The starch is obtained from the endosperm of the kernel. Corn starch is a common food ingredient, often used to thicken sauces or soups, and to make corn syrup and other sugars. [3]
A very high purity of starch (>99.5% db) can be recovered by wet-milling. Purity is important when the end product is high-fructose corn syrup or starch to be modified (using chemicals or enzymes) but it is not important during ethanol production. After centrifugation and washing, the starch is dried. [4]
Plants synthesize starch in two types of tissues. The first type is storage tissues, for example, cereal endosperm, and storage roots and stems such as cassava and potato. The second type is green tissue, for example, leaves, where many plant species synthesize transitory starch on a daily basis.
Maize is a grain, and the kernels are used in cooking as a vegetable or a source of starch. The kernels can be of various colors: blackish, bluish-gray, purple, green, red, white and yellow. The kernel of maize consists of a pericarp (fruit wall) fused to the seed coat. This type of fruit is typical of the grasses and is called a caryopsis.
Many islands in the West Indies, notably Jamaica, also use hominy (known as cornmeal or polenta, though different from Italian polenta) to make a sort of porridge with corn starch or flour to thicken the mixture and condensed milk, vanilla, and nutmeg. In the Philippines, hominy (Tagalog: lagkitan) is the main component of dessert binatog. [11]
The endosperm goes through screenings to separate starch and proteins from the corn fiber or bran. The remaining starch and proteins are centrifuged to separate the starch from the corn gluten meal. [2] Corn gluten meal as commonly produced contains "71.4% crude protein, 4.1% fat, 0.8% fiber, 1.2% ash, 12.4% starch, 10.1% other carbohydrates".
Cornmeal is a meal (coarse flour) ground from dried maize. It is a common staple food and is ground to coarse, medium, and fine consistencies, but it is not as fine as wheat flour can be. [ 1 ] [ 2 ] [ 3 ] In Mexico and Louisiana, very finely ground cornmeal is referred to as corn flour .
Fufu, a starch-based food from West and Central Africa, may also be made from maize meal, in which case it may be called fufu corn. In the Caribbean, similar dishes are cou-cou (Barbados), funchi (Curaçao and Aruba), and funjie (Virgin Islands). It is known as funche in Puerto Rican cuisine and mayi moulin in Haitian cuisine. [37]