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.
L9634
Laminarin from Laminaria digitata
polysaccharide substrate for laminarinase
Synonym(s):
Laminaran
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About This Item
CAS Number:
EC Number:
MDL number:
UNSPSC Code:
12352201
PubChem Substance ID:
NACRES:
NA.25
Pricing and availability is not currently available.
Recommended Products
biological source
algae (Laminaria digitata)
Quality Level
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
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General description
Application
Biochem/physiol Actions
Laminarin is a biologically active compound effective against inflammation. It serves as an antioxidant and anticoagulant. Laminarin also inhibits apoptosis and tumor development.[1] It acts as a predominant source of carbon among aquatic prokaryotes.[2]
Laminarin is a polysaccharide of glucose found in brown algae and utilized as a food reserve.
Other Notes
Polysaccharide; primarily poly(β-Glc-[1→3]) with some β-(1→6) interstrand linkages and branch points.
To gain a comprehensive understanding of our extensive range of Polysaccharides for your research, we encourage you to visit our Carbohydrates Category page.
Substrates
Substrate for laminarinase.
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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A seaweed extract containing laminarin (L) and fucoidan (F) (L/F) was manufactured from brown seaweed (Laminaria digitata) in spray-dried (L/F-SD) and wet (L/F-WS) forms. The effect of supplementation of pig diets with L/F-SD and L/F-WS (L, 500 mg/kg feed; F
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The objective of this study was to subject mannitol, either as a sole carbon source or in combination with glucose, and aqueous extracts of the kelp Saccharina spp., containing mannitol and laminarin, to acetone-butanol fermentation by Clostridium acetobutylicum (ATCC 824).
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Callose deposition is induced in plants by various stress factors such as when plants are attacked by herbivores and pathogens. In the case of aphids, callose plugging of aphid-damaged phloem sieve tubes is expected to reduce aphid access to the
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ラミナリンはLPSフリーでしょうか？
1 answer-
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Could you kindly provide the molecular weight of L9634?
1 answer-
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
1 answer-
Purity is not reported as a specification for this product.
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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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What is the exact molecular weight (MW) of Product L9634, Laminarin?
1 answer-
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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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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