AskDefine | Define maltose

Dictionary Definition

maltose n : a white crystalline sugar formed during the digestion of starches [syn: malt sugar]

User Contributed Dictionary



  1. A disaccharide, C12H22O11 formed from the digestion of starch by amylase; is converted to glucose by maltase.


the disaccharide C12H22O11



  1. maltose


Extensive Definition

Maltose, or malt sugar, is a disaccharide formed from two units of glucose joined with an α(1→4) linkage. It is the second member of an important biochemical series of glucose chains. The addition of another glucose unit yields maltotriose; further additions will produce dextrins (also called maltodextrins) and eventually starch.
Maltose can be broken down into two glucose molecules by hydrolysis. In living organisms, the enzyme maltase can achieve this very rapidly. In the laboratory, heating with a strong acid for several minutes will produce the same result.
The production of maltose from germinating cereals, such as barley, is an important part of the brewing process. When barley is malted, it is brought into a condition in which the concentration of maltose-producing amylases has been maximized. Mashing is the process by which these amylases convert the cereal's starches into maltose. Metabolism of maltose by yeast during fermentation then leads to the production of ethanol and carbon dioxide.

Maltose as food

In Southern China, Taiwan, Hong Kong and Macau, maltose is an element in confectionery. The most common way for them to consume is to put a layer of maltose inside two pieces of biscuits (usually cracker).


Plain maltose has a sweet taste, about half as sweet as glucose and about one-fifth as sweet as fructose.


maltose in Arabic: مالتوز
maltose in Min Nan: Be̍h-gê-thn̂g
maltose in Czech: Maltosa
maltose in Danish: Maltose
maltose in German: Maltose
maltose in Estonian: Maltoos
maltose in Spanish: Maltosa
maltose in Esperanto: Maltozo
maltose in French: Maltose
maltose in Korean: 말토스
maltose in Italian: Maltosio
maltose in Hebrew: מלטוז
maltose in Latin: Maltosium
maltose in Luxembourgish: Maltos
maltose in Lithuanian: Maltozė
maltose in Hungarian: Maltóz
maltose in Malay (macrolanguage): Maltosa
maltose in Dutch: Maltose
maltose in Japanese: マルトース
maltose in Norwegian: Maltose
maltose in Occitan (post 1500): Maltòsa
maltose in Polish: Maltoza
maltose in Portuguese: Maltose
maltose in Russian: Мальтоза
maltose in Albanian: Maltoza
maltose in Simple English: Maltose
maltose in Slovenian: Maltoza
maltose in Serbian: Малтоза
maltose in Serbo-Croatian: Maltoza
maltose in Finnish: Maltoosi
maltose in Swedish: Maltos
maltose in Turkish: Maltoz
maltose in Chinese: 麥芽糖
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