This product has not been specifically evaluated for autoclavability. However, starch solutions are typically autoclaved at 121°C for 15 - 20 minutes. Please note that autoclaving has been reported to change some characteristics of starches. Please see the link below to review a publication that may be of interest:
Babu, A. S., & Parimalavalli, R. (2014). Effect of Autoclaving on Functional, Chemical, Pasting and Morphological Properties of. JOURNAL OF ROOT CROPS, 39(1), 78–83. Retrieved from https://www.journal.isrc.in/index.php/jrc/article/view/187
1.01252
Amidon
soluble GR for analysis ISO
Synonyme(s) :
Amidon, Amylum, fécule de pomme de terre pour la détermination de la diastase
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A propos de cet article
Formule linéaire :
(C6H10O5)n
UNSPSC Code:
12352201
EC Index Number:
232-686-4
NACRES:
NA.79
MDL number:
Le tarif et la disponibilité ne sont pas disponibles actuellement.
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reag. ISO
Quality Segment
form
solid
pH
6.0-7.5 (25 °C, 20 g/L in H2O)
solubility
50 g/L
bulk density
300 kg/m3
storage temp.
no temp limit
SMILES string
O1[C@@H]([C@@H]([C@H]([C@@H]([C@H]1CO)O)O)O)O[C@@H]2[C@H](O[C@@H]([C@@H]([C@H]2O)O)O)CO
InChI
1S/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5-,6+,7-,8-,9-,10-,11+,12-/m1/s1
InChI key
GUBGYTABKSRVRQ-ASMJPISFSA-N
General description
Glucide
L'amidon est généralement composé de deux types de molécules : l'amylose et l'amylopectine. L'amidon et les amidons modifiés sont d′importants excipients. Ils servent de liants/charges.
L'amidon est généralement composé de deux types de molécules : l'amylose et l'amylopectine. L'amidon et les amidons modifiés sont d′importants excipients. Ils servent de liants/charges.
Application
Starch has been used:
- as a component in modified Columbia agar (MCA) to culture and isolate bacterial colonies[1]
- in validation studies for determining molar substitution of hydroxyethylstarches (HES) by 1H nuclear magnetic resonance (1H NMR) spectroscopy
- as a substrate in anaerobic batch experiments to study the effect of carbohydrates on protein hydrolysis[2]
Analysis Note
Apparence (couleur) : blanc
Apparence (description) : poudre fine
pH (2 %, eau) : 6,0 - 7,5
Sensibilité : test réussi
Matières réductrices (sous forme de maltose) : max. 0,7
Cendres sulfatées : max. 0,4
Perte au séchage (105 °C, 2 h) : max. 10
Utilisable comme substrat d′enzyme (pour les amylases) : test réussi
Réactif ISO
Apparence (description) : poudre fine
pH (2 %, eau) : 6,0 - 7,5
Sensibilité : test réussi
Matières réductrices (sous forme de maltose) : max. 0,7
Cendres sulfatées : max. 0,4
Perte au séchage (105 °C, 2 h) : max. 10
Utilisable comme substrat d′enzyme (pour les amylases) : test réussi
Réactif ISO
1 of 1
Cet article | |||
|---|---|---|---|
| Quality Level 100 | Quality Level 200 | Quality Level 200 | Quality Level 100 |
| solubility 50 g/L | solubility - | solubility - | solubility - |
| form solid | form powder | form solid | form - |
| storage temp. no temp limit | storage temp. room temp | storage temp. room temp | storage temp. 2-8°C |
| pH 6.0-7.5 (25 °C, 20 g/L in H2O) | pH 6.0-7.5 | pH 5.0-8.0 | pH - |
| agency reag. ISO | agency USP/NF, reag. ISO, reag. Ph. Eur. | agency tested according to Ph. Eur. | agency - |
Classe de stockage
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificats d'analyse (COA)
Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".
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After preparing a stock 2% solution by preparing the paste of 2.0 g of the sample with a little cold water and add to it with stirring 100 mL of boiling water, as suggested before, can the solution be autoclaved?
1 answer-
Helpful?
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdfHelpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
Helpful?
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What is the molecular weight and solubility of the product Starch 1.01252?
1 answer-
The molecular weight of this product is not determined. It is described as a soluble starch, meaning that it is soluble in hot water. Note that the description of being a soluble starch is based on the method of preparation for the product; there is no specification for solubility:
https://www.sigmaaldrich.com/specification-sheet/SPEC/MDA/CHEM/1.01252/1012520100The recommendation is to follow the method of preparing a 2 percent solution as found in the book Reagent Chemicals, published by the American Chemical Society:
Prepare a paste of 2.0 g of the sample with a little cold water and add to it with stirring 100 mL of boiling water. The solution should be no more than opalescent, and on cooling it should remain liquid and not increase in opalescence.Helpful?
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