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S2004

Sigma-Aldrich

Starch from potato

Soluble

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About This Item

Linear Formula:
(C6H10O5)n
CAS Number:
9005-25-8
EC Number:
232-679-6
MDL number:
MFCD00082026
UNSPSC Code:
12352201
PubChem Substance ID:
24899505
NACRES:
NA.21

biological source

potato

Quality Level

200

form

powder

color

white

useful pH range

5.0-7.5 (2% in water)

storage temp.

room temp

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General description

Starch is a carbohydrate reserve in plants and a major source of energy for humans. In plants, starch is found in chloroplasts of leaf and in the amyloplasts of tuber and seeds. Structurally, starch consists of two major polysaccharides, namely amylose and amylopectin. Both consists of chains of -(1,4)-linked D-glucose residues interconnected through -(1,6)-glycosidic linkages. Potato starch is superior to others, functionally, because of its low lipid level. Nutritional composition of starch comprises of rapidly digestible starch, slowly digestible starch, and resistant starch (RS). Amylases are the starch degrading enzymes. Starch digestibility affects the blood glucose levels and is controlled by factors like carbohydrate contents of foods, nutritional composition of starch and cooking foods. Inhibition of pancreatic amylase is of therapeutic importance for delaying starch digestion, to prevent postprandial hyperglycemia. Food industries use starch as thickening agent.

Application

Starch from potato has been used as a substrate for α-amylase inhibition assay, by use of raw and cooked food samples and aerial parts of Trichosanthes cucumerina Linn, as a substrate to determine SusG activity, in animal gut microbiota activity using DNSA assay.

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.

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

监管及禁止进口产品

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Certificates of Analysis (COA)

Lot/Batch Number
0000382983
0000358502
0000194726
0000343695
0000343694

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. Is Product S2004, soluble starch, suitable for alpha-Amylase detection?

    We have not found S2004 to be suitable for this application.

  6. What concentration of Product S2004, soluble starch, would I use for a 50 % inhibition with α mannoside?

    50% inhibition is observed at 10 - 25 ng/ml per Australian Journal of Chemistry v. 32, 2257 (1979).

  7. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Amylases: Characteristics and industrial applications
Saini R, et al.
Journal of Pharmacognosy and Phytochemistry, 6(4), 1865-1871 (2017)
Starch Hydrolysis, Polyphenol Contents, and In Vitro Alpha Amylase Inhibitory Properties of Some Nigerian Foods As Affected by Cooking
Saidu S, et al.
Frontiers in nutrition, 4, 60-60 (2017)
SusG: a unique cell-membrane-associated alpha-amylase from a prominent human gut symbiont targets complex starch molecules
Koropatkin NM and Smith TJ
Structure, 18(2), 200-215 (2010)
Understanding starch structure: Recent progress
Bertoft E
Agronomy, 7(3), 56-56 (2017)
Extraction and Optimization of Potato Starch and Its Application as a Stabilizer in Yogurt Manufacturing
Altemimin AB
Foods (Basel, Switzerland), 7(2), 14-14 (2018)
View All Related Papers

Protocols

Enzymatic Assay of Pectinase

To measure pectinase activity, a titrimetric stop reaction assay is used. One unit of pectinase will liberate 1 μmol of galacturonic acid from poly-galacturonic acid per hour at pH 4.0 at 25 °C.

Enzymatic Assay of Amyloglucosidase (EC 3.2.1.3)

This procedure may be used for the determination of Amyloglucosidase activity using starch as the substrate.

Enzymatic Assay of α-Amylase (EC 3.2.1.1)

Follow our procedure for the determination of alpha-Amylase activity. This enzymatic assay of a-Amylase guides you through the entire process and necessary calculations.

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