The result for the degree of deacetylation is provided on the certificate of analysis for each lot of this product. Unfortunately, the assay method may not be shared.
448869
Quitosano
low molecular weight
Sinónimos:
Poli(D-glucosamina), Quitina desacetilada
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About This Item
En este momento no podemos mostrarle ni los precios ni la disponibilidad
Productos recomendados
Quality Level
form
powder
mol wt
50,000-190,000 Da (based on viscosity)
viscosity
20-300 cP, 1 wt. % in 1% acetic acid(25 °C, Brookfield)(lit.)
solubility
dilute aqueous acid: soluble
SMILES string
N([C@H]1[C@@H](O[C@@H]([C@H]([C@@H]1O)O[C@@H]4O[C@@H]([C@H]([C@@H]([C@H]4N)O)O[C@@H]5O[C@@H]([C@H]([C@@H]([C@H]5N)O)O[C@@H]6O[C@@H]([C@H]([C@@H]([C@H]6N)O)O[C@@H]7O[C@@H]([C@H]([C@@H]([C@H]7N)O)O[C@@H]8O[C@@H]([C@H]([C@@H]([C@H]8N)O)O[C@@H]9O[C@@H]([C@H](
InChI
1S/C56H103N9O39/c1-87-56(86)65-28-38(84)46(19(10-74)96-55(28)104-45-18(9-73)95-49(27(64)37(45)83)97-39-12(3-67)88-47(85)20(57)31(39)77)103-54-26(63)36(82)44(17(8-72)94-54)102-53-25(62)35(81)43(16(7-71)93-53)101-52-24(61)34(80)42(15(6-70)92-52)100-51-23(60)33(79)41(14(5-69)91-51)99-50-22(59)32(78)40(13(4-68)90-50)98-48-21(58)30(76)29(75)11(2-66)89-48/h11-55,66-85H,2-10,57-64H2,1H3,(H,65,86)/t11-,12-,13-,14-,15-,16-,17-,18-,19-,20-,21-,22-,23-,24-,25-,26-,27-,28-,29-,30-,31-,32-,33-,34-,35-,36-,37-,38-,39-,40-,41-,42-,43-,44-,45-,46-,47-,48+,49+,50+,51+,52+,53+,54+,55+/m1/s1
InChI key
FLASNYPZGWUPSU-SICDJOISSA-N
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Application
El quitosano puede utilizarse como floculante, en precipitación de proteínas, como agente encapsulante y espesante acuoso.
Forma geles con aniones multivalentes. Produce disoluciones transparentes que se secan en láminas fuertes y transparentes.
Features and Benefits
Polielectrólito biocompatible, antibacteriano y ecológico con una variedad de aplicaciones entre ellas, el tratamiento del agua, la cromatografía, los aditivos para cosméticos, el tratamiento textil para actividad antimicrobiana, fibras nuevas para textiles, papeles fotográficos, películas biodegradables, productos biomédicos e implantes de microcápsulas para la liberación controlada en la administración de medicamentos.
Polielectrólito biocompatible, antibacteriano y ecológico.
Physical form
75-85% desacetilado
Storage Class
11 - Combustible Solids
wgk_germany
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
Elija entre una de las versiones más recientes:
Certificados de análisis (COA)
Lot/Batch Number
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Si necesita una versión concreta, puede buscar un certificado específico por el número de lote.
¿Ya tiene este producto?
Encuentre la documentación para los productos que ha comprado recientemente en la Biblioteca de documentos.
Ming-Hui Yang et al.
BioMed research international, 2014, 789591-789591 (2014-04-24)
Chitosan nanoparticle, a biocompatible material, was used as a potential drug delivery system widely. Our current investigation studies were the bioeffects of the chitosan nanoparticle uptake by liver cells. In this experiment, the characterizations of chitosan nanoparticles were measured by
Tsung-Lin Yang et al.
Journal of cellular and molecular medicine, 13(9A), 2853-2863 (2008-07-17)
Chitosan is a widely used biocompatible biomaterial in the tissue regeneration, but its utility and application in the tissue morphogenesis of salivary gland remains unclear. The study aimed to explore the effects of chitosan on the epithelial morphogenesis of submandibular
Ajay Vijayakumar et al.
AAPS PharmSciTech, 18(3), 875-883 (2016-07-03)
The objective of this study was to formulate and characterize properties of solid lipid nanoparticle (SLN) dispersion containing quercetin. SLN was prepared by ultrasonication method using tripalmitin and lecithin as lipid core and then the surface was coated with chitosan.
Wei-Hsuan Lo et al.
Molecules (Basel, Switzerland), 25(21) (2020-11-07)
(1) Background: Few antifungal drugs are currently available, and drug-resistant strains have rapidly emerged. Thus, the aim of this study is to evaluate the effectiveness of the antifungal activity from a combinational treatment of chitosan with a clinical antifungal drug
Jimena S Gonzalez et al.
Polymers, 11(4) (2019-04-20)
Self-assembly of natural polymers constitute a powerful route for the development of functional materials. In particular, layer-by-layer (LBL) assembly constitutes a versatile technique for the nanostructuration of biobased polymers into multilayer films. Gelatin has gained much attention for its abundance
Artículos
Carcinogenic compounds in elastomers: 1,3-butadiene and isoprene used in elastomer manufacturing, classified as carcinogenic by IARC.
Carcinogenic compounds in elastomers: 1,3-butadiene and isoprene used in elastomer manufacturing, classified as carcinogenic by IARC.
Polymers, natural or synthetic, are vital in medical advancements, contributing to device and pharmaceutical development in therapy.
Polymers, natural or synthetic, are vital in medical advancements, contributing to device and pharmaceutical development in therapy.
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Dear sir Could we get the (HNMR) and viscosity testing for the determination of the degree of deacetylated chitosan as we used the one with "(50,000–190,000 Da and degree of deacetylation equal or greater than 70%.Polymers Journal requested it.
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Can i use this Chitosan for fruit coating?
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This product is intended for research use only and is not food grade. Therefore it is not recommended for a fruit coating application.
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How can I determine the shelf life / expiration / retest date of this product?
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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/449/386/product-dating-information-mk.pdfHelpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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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We need to confirm if this Chitosan (Catalog #448869) is of animal origin (shellfish) or synthetic.
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The source information is located on the Certificate of Origin and may vary from lot to lot. Recent lot shows the source of this product is from the shells of Pandalus Borealis, Cold Water Shrimp.
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What is the molecular weight (Mw) of products 448869, 448877, or 419419?
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The molecular weight (Mw) of products 448869, 448877, and 419419 are approximately 150-250 kDa, 250-300 kDa, and 340-360 kDa, respectively. These values are calculated based on the viscosity values provided on the product data sheets and the corresponding table of viscosity vs Mw.
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What are the Mark-Houwink–Sakurada parameters (K and alpha) you use for determination of molecular weight through viscosity? Thank you!
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The Certificates of Analysis(CofA) for each lot of Product 448869, a low molecular weight Chitosan, do not report a molecular weight. However, the viscosity in 1 percent acetic acid (abbreviated HAc or HOAc) is on the CofA. Values for K and alpha for high molecular weight Chitosan have been published, which might also apply to a low molecular weight Chitosan; see Calculation of Mark–Houwink–Sakurada (MHS) equation viscometric constants for chitosan in any solvent–temperature system using experimentally reported viscometric constants data, by Mohammed R. Kasaai. Carbohydrate Polymers, 68(3), 477-488 (2007).
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Is this analytical grade?
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This product is not considered analytical grade. It is intended for general research use. Currently, no analytical grade product option is available.
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Is it research or food grade? Thanks
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This product is intended for research use only. Currently, there is no food-grade product option available
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what is the deacetylation percentage of this product?
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The minimum deacetylation percentage of this product will be 75 %. The value is lot-specific and reported on the Certificate of Analysis.
Please navigate to the bottom of the product detail page to the DOCUMENTATION section to download a sample Certificate.Helpful?
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