381 kcal (1595 kJ) | |||||||
| |||||||
Other information | density 0.54 g/ml [1] | ||||||
Cornflour, cornstarch, maize starch, or corn starch (American English) is the starch derived from corn (maize) 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] Corn starch is versatile, easily modified, and finds many uses in industry such as adhesives, in paper products, as an anti-sticking agent, and textile manufacturing. [4] It has medical uses as well, such as to supply glucose for people with glycogen storage disease. [5]
Like many products in dust form, it can be hazardous in large quantities due to its flammability—see dust explosion. When mixed with a fluid, corn starch can rearrange itself into a non-Newtonian fluid. For example, adding water transforms corn starch into a material commonly known as oobleck while adding oil transforms corn starch into an electrorheological (ER) fluid. The concept can be explained through the mixture termed "cornflour slime". [6]
Until 1851, corn starch was used primarily for starching laundry and for other industrial uses.[ citation needed ] A method to produce pure culinary starch from maize was patented by John Polson of Brown & Polson, in Paisley, Scotland in 1854. [7] [8] This was sold as "Patented Corn Flour". Brown & Polson were muslin manufacturers who had been producing laundry starch for the Paisley shawl industry and would become the largest starch producers in the UK.
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.
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 over 203 °F (95 °C), the molecular chains unravel, allowing them to collide with other starch chains to form a mesh, thickening the liquid (Starch gelatinization). However, continued boiling breaks up the molecules and thins the liquid. [9]
Cornstarch 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. [10]
Food producers reduce production costs by adding varying amounts of corn starch to foods, for example to cheese and yogurt. [11]
Chicken nuggets with a thin outer layer of corn starch allows increased oil absorption and crispness after the latter stages of frying. [12]
Baby powder may include corn starch among its ingredients. [13] Corn starch can be used to manufacture bioplastics (like PLA used for 3D printing) [14] 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 ]
Corn starch is the preferred anti-stick agent on medical products made from natural latex, including condoms, diaphragms, and medical gloves. [15] [16]
Corn starch has properties enabling supply of glucose to maintain blood sugar levels for people with glycogen storage disease. [17] Corn starch can be used starting at age 6–12 months allowing glucose fluctuations to be deterred. [18]
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. [19]
Like many other powders, corn starch is susceptible to dust explosions. It is believed that overheating of a corn starch-based powder—despite warnings on the packaging indicating that the material is flammable—initiated the Formosa Fun Coast explosion in Taiwan on 27 June 2015. [20]
Dessert is a course that concludes a meal. The course consists of sweet foods, such as cake, biscuit, ice cream and possibly a beverage such as dessert wine and liqueur. Some cultures sweeten foods that are more commonly savory to create desserts. In some parts of the world there is no tradition of a dessert course to conclude a meal.
Starch or amylum is a polymeric carbohydrate consisting of numerous glucose units joined by glycosidic bonds. This polysaccharide is produced by most green plants for energy storage. Worldwide, it is the most common carbohydrate in human diets, and is contained in large amounts in staple foods such as wheat, potatoes, maize (corn), rice, and cassava (manioc).
Custard is a variety of culinary preparations based on sweetened milk, cheese, or cream cooked with egg or egg yolk to thicken it, and sometimes also flour, corn starch, or gelatin. Depending on the recipe, custard may vary in consistency from a thin pouring sauce to the thick pastry cream used to fill éclairs. The most common custards are used in custard desserts or dessert sauces and typically include sugar and vanilla; however, savory custards are also found, e.g., in quiche.
Corn syrup is a food syrup which is made from the starch of corn/maize and contains varying amounts of sugars: glucose, maltose and higher oligosaccharides, depending on the grade. Corn syrup is used in foods to soften texture, add volume, prevent crystallization of sugar, and enhance flavor. It can be processed into high-fructose corn syrup (HFCS) by using the enzyme D-xylose isomerase to convert a large proportion of its glucose into sweeter fructose.
Porridge is a food made by heating or boiling ground, crushed or chopped starchy plants, typically grain, in milk or water. It is often cooked or served with added flavourings such as sugar, honey, fruit, or syrup to make a sweet cereal, or it can be mixed with spices, meat, or vegetables to make a savoury dish. It is usually served hot in a bowl, depending on its consistency. Oat porridge, or oatmeal, is one of the most common types of porridge. Gruel is a thinner version of porridge and congee is a savoury variation of porridge of Asian origin.
Gravy is a sauce made from the juices of meats and vegetables that run naturally during cooking and often thickened with thickeners for added texture. The gravy may be further coloured and flavoured with gravy salt or gravy browning or bouillon cubes. Powders can be used as a substitute for natural meat or vegetable extracts. Canned and instant gravies are also available. Gravy is commonly served with roasts, meatloaf, rice, noodles, fries (chips), mashed potatoes, or biscuits.
Sweet corn, also called sweetcorn, sugar corn and pole corn, is a variety of maize grown for human consumption with a high sugar content. Sweet corn is the result of a naturally occurring recessive mutation in the genes which control conversion of sugar to starch inside the endosperm of the corn kernel. Sweet corn is picked when still immature and prepared and eaten as a vegetable, unlike field corn, which is harvested when the kernels are dry and mature. Since the process of maturation involves converting sugar to starch, sweet corn stores poorly and must be eaten fresh, canned, or frozen, before the kernels become tough and starchy.
Pudding is a type of food which can either be a dessert served after the main meal or a savoury dish, served as part of the main meal.
Bird's Custard is the brand name for the original powdered, egg-free imitation custard powder, now owned by Premier Foods. Custard powder and instant custard powder are the generic product names for similar and competing products. The product is a powder, based on cornflour, which thickens to form a custard-like sauce when mixed with milk and heated.
In cooking, reduction is the process of thickening and intensifying the flavor of a liquid mixture, such as a soup, sauce, wine or juice, by simmering or boiling.
Beurre manié is a paste, consisting of equal parts by volume of soft butter and flour, used to thicken soups and sauces. By kneading the flour and butter together, the flour particles are coated in butter. When the beurre manié is whisked into a hot or warm liquid, the butter melts, releasing the flour particles without creating lumps.
Chocolate puddings are a class of desserts in the pudding family with chocolate flavors. There are two main types: a boiled then chilled dessert, texturally a custard set with starch, commonly eaten in the U.S., Canada, Germany, Sweden, Poland, and East and South East Asia; and a steamed/baked version, texturally similar to cake, popular in the UK, Ireland, Australia, Germany and New Zealand.
A thickening agent or thickener is a substance which can increase the viscosity of a liquid without substantially changing its other properties. Edible thickeners are commonly used to thicken sauces, soups, and puddings without altering their taste; thickeners are also used in paints, inks, explosives, and cosmetics.
In West Africa, garri is the flour of the fresh starchy cassava root.
Deglazing is a cooking technique for removing and dissolving browned food residue from a pan to flavor sauces, soups, and gravies.
Mazamorra or masamorra is the name for numerous traditional dishes from the Iberian Peninsula and Hispanic America.
Arrowroot is a starch obtained from the rhizomes (rootstock) of several tropical plants, traditionally Maranta arundinacea, but also Florida arrowroot from Zamia integrifolia, and tapioca from cassava, which is often labeled arrowroot. Polynesian arrowroot or pia, from Palawan-Philippines arrowroot ("uraro/araro"), Guyana arrowroot and Japanese arrowroot, also called kudzu, Purple arrowroot Canna indica are used in similar ways. In Odisha, India, it is called ପାଳୁଅ (Paḷua).
Oyster sauce describes a number of sauces made by cooking oysters. The most common in modern use is a viscous dark brown condiment made from oyster extracts, sugar, salt and water, thickened with corn starch.
{{cite book}}
: CS1 maint: others (link)