Document Detail


Production and stability of 3-hydroxypropionaldehyde in Lactobacillus reuteri.
MedLine Citation:
PMID:  12382044     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
3-Hydroxypropionaldehyde (3-HPA) is considered as a potent antimicrobial substance. Exploration of its application as a food preservative or as a therapeutic auxiliary agent has been documented in the literature. In the present work, factors that may impact on 3-HPA accumulation by Lactobacillus reuteri and on the stability of 3-HPA were investigated. Three media - H(2)O, milk and MRS broth - were chosen as test systems. Data indicated that 3-HPA accumulation in resting cells of L. reuteri in a two-step fermentation is greatly affected by temperature, pH, cell age and biomass as well as components in the test system. Within 2 h of incubation, 170 mM 3-HPA could be produced with a cell dry weight of 30 g/l, representing 85% of the glycerol supplied (200 mM) in H(2)O. The presence of glycerol during cell growth increased the productivity of 3-HPA by resting cells. In general, 3-HPA is much more stable in H(2)O than in milk and MRS. Factors that enhanced accumulation of 3-HPA did not simply show the same positive impact on the stability of 3-HPA. Thus, for defined applications, factors affecting production and stability of 3-HPA should be evaluated separately.
Authors:
Q Lüthi-Peng; S Schärer; Z Puhan
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Publication Detail:
Type:  Journal Article     Date:  2002-08-23
Journal Detail:
Title:  Applied microbiology and biotechnology     Volume:  60     ISSN:  0175-7598     ISO Abbreviation:  Appl. Microbiol. Biotechnol.     Publication Date:  2002 Oct 
Date Detail:
Created Date:  2002-10-16     Completed Date:  2003-04-17     Revised Date:  2005-11-17    
Medline Journal Info:
Nlm Unique ID:  8406612     Medline TA:  Appl Microbiol Biotechnol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  73-80     Citation Subset:  IM    
Affiliation:
Laboratory of Dairy Science, Institute of Food Science and Nutrition, Swiss Federal Institute of Technology, 8092 Zurich, Switzerland. qiaoqian.luethi-peng@ilw.agrl.ethz.ch
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MeSH Terms
Descriptor/Qualifier:
Aldehydes
Fermentation
Glyceraldehyde / analogs & derivatives*,  metabolism*
Glycerol / metabolism*
Lactobacillus / enzymology,  growth & development,  metabolism*
Microbial Sensitivity Tests
Propane
Chemical
Reg. No./Substance:
0/Aldehydes; 2134-29-4/3-hydroxypropionaldehyde; 367-47-5/Glyceraldehyde; 56-81-5/Glycerol; 74-98-6/Propane

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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