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.pdf
Fortfahren mit
L9634
Laminarin aus Laminaria digitata
polysaccharide substrate for laminarinase
Synonym(e):
Laminaran
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Über diesen Artikel
biological source
algae (Laminaria digitata)
Quality Segment
form
powder
optical activity
[α]20/D -20 to -5 °, c = 4% (w/v) in water
color
beige
useful pH range
5
solubility
water: 10 mg/mL, clear to slightly hazy, colorless to light yellow
storage temp.
room temp
SMILES string
O1[C@@H]([C@H]([C@@H]([C@H](C1O[C@H]3[C@@H]([C@H](OC([C@@H]3O)O)CO)O)O)OC2O[C@@H]([C@H]([C@@H]([C@H]2O)O)O)CO)O)CO
InChI
1S/C18H32O16/c19-1-4-7(22)10(25)11(26)17(31-4)34-15-9(24)6(3-21)32-18(13(15)28)33-14-8(23)5(2-20)30-16(29)12(14)27/h4-29H,1-3H2/t4-,5-,6-,7-,8-,9-,10+,11-,12-,13-,14+,15+,16?,17?,18?/m1/s1
InChI key
DBTMGCOVALSLOR-VPNXCSTESA-N
General description
Application
- als Reizmittel zur Untersuchung seiner Wirkung auf den Atmungsstoß mit Hämozyten von P. vannamei
- als Kohlenstoffquelle zur Untersuchung seiner Wirkung auf die Enzymproduktion unter Verwendung von Pichia-membranifaciens-Kultur
- als Kohlenstoffquelle für Polaribacter-sp.-Kultur
Biochem/physiol Actions
Other Notes
1 of 1
Dieser Artikel | |||
|---|---|---|---|
| description polysaccharide substrate for laminarinase | description for use with Total Dietary Fiber Control Kit, TDF-C10 | description average mol wt 15,000-30,000 | description ≥98% (HPLC) |
| biological source algae (Laminaria digitata) | biological source - | biological source bacterial (Leuconostoc mesenteroides) | biological source plant |
| solubility water: 10 mg/mL, clear to slightly hazy, colorless to light yellow | solubility - | solubility water: 20 mg/mL, clear, colorless to faintly yellow | solubility water: 50 mg/mL, clear, colorless |
| Quality Level 200 | Quality Level 100 | Quality Level 200 | Quality Level 200 |
| form powder | form lyophilized powder | form powder | form powder |
| storage temp. room temp | storage temp. 2-8°C | storage temp. - | storage temp. room temp |
| useful pH range 5 | useful pH range - | useful pH range - | useful pH range - |
Lagerklasse
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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How can I determine the shelf life / expiration / retest date of this product?
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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
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ラミナリンはLPSフリーでしょうか？
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This product is isolated from the algae Laminaria digitata. LPS (Lipopolypolysaccharide) is a product of bacteria. During processing, the material is not intentionally exposed to bacteria. The expectation is that this item would have a very low LPS content. However, the product is not tested for the presence of LPS and is not guaranteed to be LPS-free.
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Could you kindly provide the molecular weight of L9634?
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The determination of the molecular weight has not been conducted. However, based on archived data, the reported molecular weight for one of the lots is 8,600. We recommend validating this data on your end as we have not conducted specific testing for it.
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Laminarin is considered a neutral polysaccharide. However, at interaction studies with a quartz crystal microbalance and the bound to particles it omitted a negative charge. Is it possible that Laminarin contains negativley charged groups?
1 answer-
The charge state of this product has not been investigated. There are publications available which claim that it is neutral, however the link below is reporting laminarin as negatively charged. Unfortunately, no further information is available.
https://www.sciencedirect.com/science/article/abs/pii/S0013935123007016Helpful?
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Pourriez-vous m'indiquer le degré de pureté du produit. Je ne l'ai pas trouvé. Merci
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Purity is not reported as a specification for this product.
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How does the storage temperature relate to shipping conditions?
1 answer-
The storage conditions that a Sigma-Aldrich catalog and label recommend for products are deliberately conservative. For many products, long-term storage at low temperatures will increase the time during which they are expected to remain in specification and therefore are labeled accordingly. Where short-term storage, shipping time frame, or exposure to conditions other than those recommended for long-term storage will not affect product quality, Sigma-Aldrich will ship at ambient temperature. The products sensitive to short-term exposure to conditions other than their recommended long-term storage are shipped on wet or dry ice. Ambient temperature shipping helps to control shipping costs for our customers. At any time, our customers can request wet- or dry-ice shipment, but the special handling is at customer expense if our product history indicates that the product is stable for regular shipment.
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What is the exact molecular weight (MW) of Product L9634, Laminarin?
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Product L9634, Laminarin, is a mixture of different carbohydrates of different MW values. One publication has done a detailed ESI-MS analysis of laminarin from Laminaria digitata. Read, S.M., et al., Analysis of the structural heterogeneity of laminarin by electrospray-ionisation-mass spectrometry. Carbohydrate Res., 281(2), 187-201 (1996).
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What is the Department of Transportation shipping information for this product?
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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.
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