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Amylose is a glucan composed of unbranched chains of D-glucopyranose residues in alpha(1->4) glycosidic linkage. The number of repeated glucose subunits (n) is usually in the range of 300 to 3000, but can be many thousands. One of the two components of starch (the other, 70-80%, being amylopectin).Cf. linear maltodextrin, in which the chain length is typically between 3 and 17 glucose units.


The naturally occurring form of glucose is d-glucose, while l-glucose is produced synthetically in comparatively small amounts and is of lesser importance. Glucose is a monosaccharide containing six carbon atoms, an aldehyde group and is therefore referred to as an aldohexose.


The D-glucose can exist in two forms alpha-D-glucose and beta-D-glucose. They differ only in the direction that -H and -OH groups point on carbon 1 (See the jmol images below). When alpha-glucose molecules are joined chemically to form a polymer starch is formed. When beta-glucose molecules are joined to form a polymer cellulose is formed. ...


Alpha and beta glucose differ only in the direction that -H and -OH groups point on carbon 1 (labelled). The description below assumes that the ring is orientated so that the movement from carbon atom C1 to C6 is in a clockwise direction.


α-D-Glucose is used: • As a reducing agent in the preparation superparamagnetic ferrous oxide (Fe 3 O 4) nanoparticles and silver nanocrystals. • As an additive for the formation of isoporous polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) diblock copolymer membranes.


$\alpha$-D-glucose $\beta$-D-glucose. Note that the structures are almost identical, except that in the $\alpha$ form, the $\ce{OH}$ group on the far right is down, and, in the $\beta$ form, the $\ce{OH}$ group on the far right is up. More specifically, they are a class of stereoisomer called an anomer. Anomers are capable of interconverting in ...


UThey’re stereoisomers, are mirror images of each other, from Epimers of Glucose > 1. The molecular formula for glucose is C6H12O6 and with molecular mass 180.16 g/mol. Each glucose units is composed of one aldehyde group with four secondary alcoh...


Glucose und Beta-Glucose ? • Sie unterscheiden sich in der spezifischen Rotation, α-D- Glucose hat [a] D 20 von 112. 2 ° und β-D- D 20 von 18,7 °. • Die Beta-Form ist stabiler als die Alpha-Form, so dass in einer Mischungsmenge von β-D- Glukose höher ist als α-D-Glukose.


What is the difference between Alpha Glucose and Beta Glucose? • They are different in specific rotation, α- D- glucose has [a]D 20 of 112.2°and β-D-glucose has [a] D 20 of 18.7°. • The beta form is more stable than the alpha form, so in a mixture amount of β-D- glucose is higher than α-D-glucose.


Alpha-glucose and beta-glucose are examples of stereoisomers. Alpha Glucose Structure. Alpha-glucose is a specific stereoisomer of glucose. In the ring form, alpha-glucose exists when the hydroxyl group on the carbon-1 atom is below the plane of the ring, and in the same plane as the hydroxyl group on carbon-2 and carbon-4.