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A0512

Sigma-Aldrich

Amylose from potato

used as amylase substrate

Synonym(s):

α-Amylose

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About This Item

Linear Formula:
(C6H10O5)n
CAS Number:
9005-82-7
MDL number:
MFCD00134652
UNSPSC Code:
12352201
PubChem Substance ID:
24890430
NACRES:
NA.25

biological source

potato

Quality Level

300

form

powder

impurities

amylopectin, essentially free
≤10% ethanol
≤2% butanol

color

white to off-white

solubility

0.05 M NaOH: 1 mg/mL, clear to slightly hazy, colorless

storage temp.

room temp

InChI

1S/C18H32O16/c19-1-4-7(22)8(23)12(27)17(31-4)34-15-6(3-21)32-18(13(28)10(15)25)33-14-5(2-20)30-16(29)11(26)9(14)24/h4-29H,1-3H2/t4-,5-,6-,7-,8+,9-,10-,11-,12-,13-,14-,15-,16+,17-,18-/m1/s1

InChI key

FYGDTMLNYKFZSV-PXXRMHSHSA-N

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General description

Amylose, a ubiquitous carbohydrate polymer in starch, is made up of a long α-1,4-linked linear chain with rare α-1,6-linked branch points. It is usually seen in the amorphous regions of the granule. It has a left-handed α-helical structure with one turn of the helix consisting of six to eight anhydroglucose units.

Application

Amylose from potatoes has been used as a standard to determine the apparent amylose content (AAC) of rice starch by the iodine-binding colorimetric method.

Biochem/physiol Actions

Amylose is a polyglucose polysaccharide that makes starch(s) together with amylopectin. 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 and gelling agent, and emulsion stabilizer. Amylose is used to prepare films and membranes with potential use in drug delivery.

Substrates

A substrate for serum amylase.

Other Notes

To gain a comprehensive understanding of our extensive range of Polysaccharides for your research, we encourage you to visit our Carbohydrates Category page.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H319

Hazard Classifications

Eye Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
0000276528
0000276837
0000280246
0000276837
0000276528

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Shujun Wang et al.
Scientific reports, 6, 28271-28271 (2016-06-21)
A thorough understanding of starch gelatinization is extremely important for precise control of starch functional properties for food processing and human nutrition. Here we reveal the molecular mechanism of starch gelatinization by differential scanning calorimetry (DSC) in conjunction with a
Shujun Wang et al.
Scientific reports, 6, 20965-20965 (2016-02-11)
Starch retrogradation is a term used to define the process in which gelatinized starch undergoes a disorder-to-order transition. A thorough understanding of starch retrogradation behavior plays an important role in maintaining the quality of starchy foods during storage. By means
Fernanda M Carbinatto et al.
International journal of pharmaceutics, 423(2), 281-288 (2011-12-20)
Pectin-high amylose starch mixtures (1:4; 1:1; 4:1) were cross-linked at different degrees and characterized by rheological, thermal, X-ray diffraction and NMR analyses. For comparison, samples without cross-linker addition were also prepared and characterized. Although all samples behaved as gels, the
Caili Li et al.
Carbohydrate polymers, 245, 116557-116557 (2020-07-29)
High-amylose wheat starch (HAWS) and flour (HAWF) have the potential to deliver food products with enhanced nutritional functionality, but structure/function relationships are not well understood. We report the structural bases for differences in water absorption and pasting properties for HAWS
Ling Yan et al.
Journal of the American Chemical Society, 135(10), 3748-3751 (2013-01-24)
Portable devices with the advantages of rapid, on-site, user-friendly, and cost-effective assessment are widely applied in daily life. However, only a limited number of quantitative portable devices are commercially available, among which the personal glucose meter (PGM) is the most
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