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Key Documents

C3646

Sigma-Aldrich

Chitosano

from shrimp shells, ≥75% (deacetylated)

Sinonimo/i:

Chitina deacetilata, Poli(D-glucosamina)

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About This Item

Numero CAS:
Numero MDL:
Codice UNSPSC:
12352201
NACRES:
NA.25

Origine biologica

shrimp shells

Saggio

≥75% (deacetylated)

Forma fisica

powder or flakes

Colore

white to beige

Punto di fusione

102.5  °C ((216.5 °F ))

Solubilità

acetic acid: water: 10 mg/mL, slightly hazy to hazy (with extensive sonication)
H2O: insoluble
organic solvents: insoluble

Densità bulk

0.15‑0.3 g/cm3

Temperatura di conservazione

room temp

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
FLASNYPZGWUPSU-SICDJOISSA-N

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Applicazioni

Forma gel con gli anioni multivalenti. Sviluppa soluzioni trasparenti che seccandosi formano pellicole forti trasparenti.
Shrimp shell derived chitosan, deacetylated chitin (poly β-1,4-D-glucosamine), may be used as a biocompatible, antibacterial and environmentally friendly polyelectrolyte biomaterial with a variety of applications including uses in water treatment, chromatography, additives for cosmetics, textile treatment for antimicrobial activity, novel fibers for textiles, photographic papers, biodegradable films, biomedical devices, and microcapsule implants for controlled release in drug delivery. It may be derivatized to further expand its uses.

Caratteristiche e vantaggi

Polielettrolita biocompatibile, antibatterico ed ecologico con svariate applicazioni tra cui: trattamento delle acque, cromatografia, additivi per cosmetici, trattamento tessile per attività antimicrobica, fibre innovative per tessili, carte fotografiche, pellicole biodegradabili, dispositivi biomedici e impianti in microcapsula per il rilascio controllato di farmaci.

Qualità

May contain foreign matter.

Nota sulla preparazione

Prepared by the alkaline deacetylation of chitin obtained from the shells of shrimp (Pandalus borealis). Chitin is manufactured industrially by crushing shrimp shells, then washing the solids with acids to remove inorganic and proteinaceous material. The purified chitin is deacetylated to chitosan by treatment with a strong base such as sodium hydroxide. The resulting chitosan may be further purified by preparation of solutions in acid followed by neutralization and precipitation.

Risultati analitici

The degree of acetylation may be determined by dye binding or titration methods.

Altre note

To gain a comprehensive understanding of our extensive range of Polysaccharides for your research, we encourage you to visit our Carbohydrates Category page.

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

nwg

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

Eyeshields, Gloves, type N95 (US)


Certificati d'analisi (COA)

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Colorimetric determination of chitosan.
R A Muzzarelli
Analytical biochemistry, 260(2), 255-257 (1998-07-11)
Koen van der Maaden et al.
Langmuir : the ACS journal of surfaces and colloids, 30(7), 1812-1819 (2014-01-30)
The aim of this work was to generate a tunable surface isoelectric point (sIEP), where the surface is modified with two molecules: a weak base (pyridine), carrying a pH dependent positive charge, and a derivative of a strong acid (sulfate)
Frederik T Larsen et al.
Vaccines, 8(2) (2020-05-21)
Infectious bronchitis virus (IBV) is a highly contagious avian coronavirus. IBV causes substantial worldwide economic losses in the poultry industry. Vaccination with live-attenuated viral vaccines, therefore, are of critical importance. Live-attenuated viral vaccines, however, exhibit the potential for reversion to
Sirong Tan et al.
Journal of agricultural and food chemistry, 62(8), 1866-1874 (2014-02-01)
Chitosan (CTS) and capsaicin (CAP) are two kinds of effective ingredients for antiobesity, which are extracted from crab shells and Capsicum annuum. However, the strong taste of CAP makes it difficult to consume, and the antiobesity ability of CTS is
Wen-Chu Hsiao et al.
Journal of the Formosan Medical Association = Taiwan yi zhi, 118(1 Pt 1), 152-161 (2018-03-04)
Cell behaviors in three-dimensional spheroids are known to be different from those in monolayer cultures; however, very few studies have compared the characteristics of cell spheroids formed through different biomaterial-induced processes. This study investigated the mechanism of melanocyte spheroid formation

Articoli

Microparticles with controlled size and morphology are of significant interest in the fields of drug delivery and biopharmaceuticals.

Enzymatic Assay of Chitosanase from Streptomyces Species

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