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aleurone layer

A Dictionary of Biology | 2004 | Copyright

aleurone layer The outer layer of living cells of the endosperm of wheat and other grain species. It is a single layer of cells that synthesizes the enzyme α-amylase, which is secreted during germination into the starch-filled endosperm and breaks down the starch into maltose and glucose. Studies on the barley grain have shown that gibberellins control the synthesis of the enzyme by switching on the genes for the synthesis of the specific RNA that codes for the α-amylase protein.

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aleurone layer

A Dictionary of Food and Nutrition | 2005 | | Copyright

aleurone layer The single layer of large cells under the bran coat and outside the endosperm of cereal grains. About 3% of the weight of the grain, and rich in protein, as well as containing about 20% of the vitamin B1, 30% of the vitamin B2 and 50% of the niacin of the grain. Botanically the aleurone layer is part of the endosperm, but in milling it remains attached to the inner layer of the bran. See also flour, extraction rate.

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DAVID A. BENDER. "aleurone layer." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

DAVID A. BENDER. "aleurone layer." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O39-aleuronelayer.html

DAVID A. BENDER. "aleurone layer." A Dictionary of Food and Nutrition. 2005. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O39-aleuronelayer.html

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aleurone layer

A Dictionary of Plant Sciences | 1998 | | Copyright

aleurone layer A layer of cells below the testa of some seeds (e.g. barley), which contains hydrolytic enzymes (including amylases and proteases) for the digestion of the food stored in the endosperm. The production of enzymes is activated by gibberellins when the seed is soaked in water prior to germination.

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MICHAEL ALLABY. "aleurone layer." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "aleurone layer." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O7-aleuronelayer.html

MICHAEL ALLABY. "aleurone layer." A Dictionary of Plant Sciences. 1998. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-aleuronelayer.html

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Free newspaper and magazine articles

	Hydrogen peroxide affects abscisic acid binding to ABAP1 in barley... Magazine article from: Biochemistry and Cell Biology; 10/1/2007
	Manipulate plant cell structure to increase nutrient content. Newspaper article from: Emerging Food R&D Report; 1/1/2000
	Manipulate plant cell structure to increase nutrient content Newspaper article from: Emerging Food R&D Report; 2/1/1996