Low-molecular-weight chitosans: Preparation and characterization
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F11%3A00361593" target="_blank" >RIV/61389013:_____/11:00361593 - isvavai.cz</a>
Alternative codes found
RIV/67985904:_____/11:00361593
Result on the web
<a href="http://dx.doi.org/10.1016/j.carbpol.2011.04.073" target="_blank" >http://dx.doi.org/10.1016/j.carbpol.2011.04.073</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.carbpol.2011.04.073" target="_blank" >10.1016/j.carbpol.2011.04.073</a>
Alternative languages
Result language
angličtina
Original language name
Low-molecular-weight chitosans: Preparation and characterization
Original language description
The chitosan depolymerization products prepared by enzymatic hydrolysis, oxidative reaction or microwave irradiation were characterized by FT-IR, MALDI TOF MS, solid state 13C CP/MAS NMR and GPC. Enzymatic hydrolysis resulted in two fractions of low-molecular-weight (LMW) chitosans with Mw 34 kDa (3.9 wt%) and 14.6 kDa (8.5 wt%). In the oxidative reaction at the hydrogen peroxide and acetic acid molar ratio equal to 1.7, two LMW chitosans with Mw 9 and 10 kDa (the deacetylation degree 69% and 94%, respectively) were isolated with the total yield 86 wt%. In microwave irradiation, the Mw of chitosan (175.5 kDa) decreased at most in two times. Two chitosan fractions with Mw 80 and 120 kDa (total yield 70 wt%) were obtained. In all cases, LMW chitosans served as fortifiers for chitosan oligomers, which were retained with the former through multiple hydrogen bonds. Their content in LMW chitosans was roughly 20?30 wt%.
Czech name
—
Czech description
—
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
ED - Physiology
OECD FORD branch
—
Result continuities
Project
<a href="/en/project/GA525%2F08%2F0803" target="_blank" >GA525/08/0803: The effect of chitooligosaccharides in the human bowel</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Carbohydrate Polymers
ISSN
0144-8617
e-ISSN
—
Volume of the periodical
86
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
5
Pages from-to
1077-1081
UT code for WoS article
000294187400094
EID of the result in the Scopus database
—