ChemicalBook CAS DataBase List 9005-82-7

9005-82-7

Name	AMYLOSE
CAS	9005-82-7
EINECS(EC#)	232-685-9
Molecular Formula	C18H30O16X2
MDL Number	MFCD00134652
Molecular Weight	502.42
MOL File	9005-82-7.mol

Chemical Properties

density	1.6 g/cm3
refractive index	145 ° (C=2, 1mol/L NaOH)
storage temp.	room temp
solubility	0.05 M NaOH: 1 mg/mL, slightly turbid, colorless
form	A solid
Merck	8798
Stability:	Hygroscopic
EPA Substance Registry System	Amylose(9005-82-7)

Safety Data

Hazard Codes	Xi
Risk Statements	36-41 less more
Safety Statements	26-36/39-39 less more
WGK Germany	1
HS Code	35051000

Raw materials And Preparation Products

Hazard Information

Uses

Amylose is a polyglucose polysaccharide which together with amylopectin makes starch(s). The glucosidic bonds of amylopectin are α-1,4 linkages. Amylose is used to identify, differentiate and characterize amylase(s). Amylose is used as a thickening agent, a gelling agent and emulsion stabilizer. Amylose is used in the preparation of films and membranes with potential use in drug delivery.

Definition

A polymer of GLUCOSE, a polysaccharide sugar that is found in starch.

Definition

amylose: A polysaccharide consistingof linear chains of between 100and 1000 linked glucose molecules.Amylose is a constituent of starch.In water, amylose reacts with iodineto give a characteristic blue colour.

Definition

The inner, relatively soluble portion of starch granules. Amylose is a hexosan, a polymer of glucose, and consists of long, straight chains of glucose units joined by a 1,4-glycosidic linkage. It stains blue with iodine. Microcrystalline amylose is available chiefly as a food ingredient and dietary energy source.

Agricultural Uses

Amylose is a type of polysaccharide and is a constituent of starch. Amylose is made up of linear links of several hundred glucose molecules. A water-amylose mixture turns blue when iodine is added to it.

Purification Methods

Amylopectin is removed from impure amylose by dispersing in aqueous 15% pyridine at 80-90o (concentration 0.6-0.7%) and allowing the solution to stand at 44-45o for 7days. The precipitate is re-dispersed and recrystallises during 5days. After a further dispersion in 15% pyridine, it is cooled to 45o, allowed to stand at this temperature for 12hours, then cooled to 25o and left for a further 10hours. The combined precipitates are dispersed in warm water, precipitated with EtOH, washed with absolute EtOH, and dried in vacuo [Foster & Paschall J Am Chem Soc 75 1181 1953].

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