Document Detail

Effect of ultrasonic treatment on the molecular weight of carboxymethylated chitin-glucan complex from Aspergillus niger.
MedLine Citation:
PMID:  11269957     Owner:  NLM     Status:  MEDLINE    
Different factors affecting the efficiency of the ultrasonic depolymerization of the high-molecular-weight carboxymethylated chitin-glucan prepared from the fungal mycelium of Aspergillus niger have been investigated. The influence of the following parameters was examined: concentration of the chitin-glucan complex, duration of ultrasonic irradiation, reaction temperature and volume of the ultrasonicated solution. The optimized conditions for the efficient ultrasonic depolymerization include: polysaccharide concentration--0.2 mg ml-1; volume of the sonicated solution--25 ml; duration of the sonication--10 min; and constant cooling of the sonicated sample in an ice-water bath.
E Machová; K Kvapilová; G Kogan; J Sandula
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Ultrasonics sonochemistry     Volume:  5     ISSN:  1350-4177     ISO Abbreviation:  Ultrason Sonochem     Publication Date:  1999 Jan 
Date Detail:
Created Date:  2001-03-28     Completed Date:  2001-05-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9433356     Medline TA:  Ultrason Sonochem     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  169-72     Citation Subset:  IM    
Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 842 38 Bratislava, Slovak Republic.
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MeSH Terms
Aspergillus niger / chemistry*
Chitin / chemistry*
Chromatography, High Pressure Liquid
Glucans / chemistry*
Molecular Weight
Reg. No./Substance:
0/Glucans; 1398-61-4/Chitin

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