Merck
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A0512

Sigma-Aldrich

アミロース ジャガイモ由来

used as amylase substrate

化学式:
(C6H10O5)n
CAS番号:
MDL番号:
PubChem Substance ID:
NACRES:
NA.25

品質水準

300

由来生物

potato

形態

powder

不純物

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

保管温度

room temp

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アプリケーション

アミロースは、アミロペクチンと共にデンプンを構成するポリグルコース多糖体です。 アミロペクチンのグリコシド結合は、α-1,4結合です。アミロースは、アミラーゼの同定、識別、および特徴付けに使用されます。アミロースは、増粘剤、ゲル化剤、および乳化安定剤として使用されます。アミロースは、薬剤送達に利用できる可能性のあるフィルムおよび膜の調製に使用されます。

包装

250 mg in poly bottle
1, 5, 25 g in poly bottle

基質

血清アミラ-ゼの基質。

ピクトグラム

Exclamation mark

シグナルワード

Warning

危険有害性情報

危険有害性の分類

Eye Irrit. 2

保管分類コード

11 - Combustible Solids

WGK

WGK 3

引火点(°F)

Not applicable

引火点(℃)

Not applicable

試験成績書(COA)

ロット番号を入力して試験成績書(COA)を検索してください。

原産地証明書(COO)

ロット番号を入力して原産地証明書(COO)を検索してください。

  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. What can I use to solubilize Amylose from Potato, Product A0512?

    This product is soluble in 50 mM NaOH at a concentration of 1 mg/mL. The product can also be dissolved as follows (final concentration = 1 mg/ml): Dissolve 100 mg in 1 mL ethanol. Add 10 mL water and 2 mL of 10% NaOH. Heat in boiling water bath until sample dissolves, cool to ambient temperature, then dilute to 100 mL with water.

  4. What is the blue value of Amylose from Potato, Product A0512? How is it determined?

    Prepare iodine solution and Solution A:  1. Iodine solution: 0.2% iodine in 2% potassium iodide.2. Solution A: To 100 mg of sample in 100 mL flask, add 1 mL ethanol. Add 10 mL water and 2 mL of 10% NaOH. Warm in boiling water bath until sample dissolves. After cooling, dilute to 100 mL with water.Transfer 2.5 mL of solution A to 250 mL flask. To this flask, add 50 mL water, then 2 drops of 6 N hydrochloric acid, followed by 2.5 mL of Iodine solution. Dilute to 250 mL with water. Read absorbance at 680 nm against a blank.The final solution to be read will be at a sample concentration of 10 μg per mL, and 1% of the iodine solution.This procedure is based on McCready, R. M., and Hassid, W. Z., The Separation and Quantitative Estimation of Amylose and Amyolpectin in Potato Starch. J. Am. Chem. Soc., Vol. 65, pp. 1154-1157 (1943).

  5. What is the molecular weight of Amylose from Potato, Product A0512?

    Sigma-Aldrich has not determined the molecular weight of the product. One reported range is from 40,000 to 340,000 Daltons, with chains containing 250 to 2000 anhydroglucose units. Source: WHO Food Additives Series No. 5.

  6. What is the method of preparation of Amylose from Potato, Product A0512?

    The method of preparation is given in Street and Close, Clin. Chim. Acta, 1, 256-268 (1956). Potato starch is dissolved in boiling 2% (w/v) NaCl solution, filtered while hot, then cooled. Thymol is added, and the mixture is stirred for 48 hr. Amylopectin is decanted away in the supernatant. The precipitate is washed six times with concentrated thymol solution, four times with absolute ethanol, and dried.

  7. What do the "Types" of Amylose from Potato, Product A0512, mean?

    The "Type" of the product has no significant meaning outside Sigma-Aldrich. The differences between products were designated by types before Sigma had established product numbers for specific products. The types were differentiated on several bases, including manufacturing method, source, and purity.

  8. 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.

  9. 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. 

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

    Ask a Scientist here.

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
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
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
Rachmawati Rachmawati et al.
Biomacromolecules, 14(2), 575-583 (2013-01-16)
Several methods were used to investigate the possibility of preparing inclusion complexes between amylose and polytetrahydrofurans (PTHF) via direct mixing. Potato amylose (M(v) ∼ 200 kg/mol) and synthetic amylose (M(n) 42 kg/mol) were complexed with PTHF having different molecular weights
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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