Chitin and chitosan from Brazilian Atlantic Coast: Isolation, characterization and antibacterial activity

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F15%3A39900613" target="_blank" >RIV/00216275:25310/15:39900613 - isvavai.cz</a>

Alternative codes found

RIV/00216305:26620/15:PU114525

Result on the web

<a href="http://dx.doi.org/10.1016/j.ijbiomac.2015.06.027" target="_blank" >http://dx.doi.org/10.1016/j.ijbiomac.2015.06.027</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijbiomac.2015.06.027" target="_blank" >10.1016/j.ijbiomac.2015.06.027</a>

Result language

angličtina

Original language name

Chitin and chitosan from Brazilian Atlantic Coast: Isolation, characterization and antibacterial activity

Original language description

Chitin and chitosan were obtained by chemical treatments of shrimp shells. Different particle sizes (50-1000 mu m) of the raw material were used to study their effect on size distribution, demineralization, deproteinization and deacetylation of chitin and chitosan isolation process. The particle size in the range of 800-1000 mu m was selected to isolate chitin, which was achieved by measuring nitrogen, protein, ash, and yield %. Hydrochloric acid (5%, v/v) was optimized in demineralization step to remove the minerals from the starting material. Aqueous solution of sodium hydroxide (5%, w/v) at 90 degrees C for (20h) was used in deproteinization step to remove the protein. Pure chitin was consequently impregnated into high concentration of sodium hydroxide (50%) for 3.5 h at 90 degrees C to remove the acetyl groups in order to form high pure chitosan. The degree of deacetylation (DDA) of chitosan was controlled and evaluated by different analytical tools. The chemical structure of chitin and chitosan was confirmed by elemental analysis, ATR-FTIR, H/C NMR, XRD, SEM, UV-Vis spectroscopy, TGA, and acid-base titration. The isolated chitin and chitosan from shrimp shell showed excellent antibacterial activity against Gram (-ve) bacteria (Escherichia coli) comparing with commercial biopolymers.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

FR - Pharmacology and apothecary chemistry

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

International Journal of Biological Macromolecules

ISSN

0141-8130

e-ISSN

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Volume of the periodical

80

Issue of the periodical within the volume

September 2015

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

14

Pages from-to

107-120

UT code for WoS article

000361251000013

EID of the result in the Scopus database

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