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Baking powder is a dry chemical leavening agent, a mixture of a carbonate or bicarbonate and a weak acid. The base and acid are prevented from reacting prematurely by the inclusion of a buffer such as cornstarch. Baking powder is used to increase the volume and lighten the texture of baked goods.
It was the precursor to today's more commonly used baking powder. Originally made from ground deer horn and called hartshorn, today it is called baker's ammonia. It is prepared by the sublimation of a mixture of ammonium sulfate and calcium carbonate and occurs as a white powder or a hard, white or translucent mass. [4]
Figure 6 shows models of anthrax toxin, left (at a scale of approximately 20 Å/cm or 1:5,000,000) and green fluorescent protein, right (5 cm high, at a scale of about 4 Å/cm or 1:25,000,000) from 3D Molecular Design. Models are made of plaster or starch, using a rapid prototyping process.
Food powder (also called powdery food) is the most common format of dried solid food material that meets specific quality standards, such as moisture content, particle size, and particular morphology. [1] Common powdery food products include milk powder, tea powder, cocoa powder, coffee powder, soybean flour, wheat flour, and chili powder. [1]
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Bakewell Cream baking powder, on a store shelf in Portland, Maine, USA. Bakewell Cream is a variety of baking powder developed by Bangor, Maine chemist Byron H. Smith in response to a shortage of cream of tartar in the U.S. during World War II. It is sold throughout the U.S., but is most popular in the state of Maine. [1] [2]
Cans of Calumet Baking Powder were used as props in the larder scenes of the 1980 film, The Shining. This detail is noted early in the 2012 documentary Room 237 , as the catalyst for Bill Blakemore's theory that the film is an allegory for the mass dying of Native Americans following European colonization.