Document Detail


Shelf life extension of pre-baked buns by an ACTIVE PACKAGING ethanol emitter.
MedLine Citation:
PMID:  11834079     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The paper reports the influence of an ethanol emitter (Ethicap) on the microbiological condition and the shelf life extension of a bakery product. Pre-baked buns, with a water activity of 0.95, were packaged with different amounts of Ethicap and stored at room temperature. Yeasts and moulds remained largely absent from the core of the pre-baked bun (< 10(2) cfu g(-1)) during storage, independent of the presence of ethanol. The total mesophilic count was low at the beginning of the storage experiment (< 10(2) cfu g(-1)), but increased without ethanol within 1 week to an unacceptable level. In the presence of ethanol, the total mesophilic count stabilizes at a consumable level of 10(5)-10(6) cfu g(-1). The increase of total mesophilic count was caused by growth of a Bacillus spp., probably B. subtilis. Mould growth on the outer surface is limiting for shelf life extension. On the pre-baked buns, the following moulds were present: Penicillium solitum, P. commune, P. corylophilum, Cladosporium sphaerospermum and C. herbarum. These started to grow within 4-6 days. Mould growth can be delayed for 13 days by adding Ethicap. The ethanol probably has to be absorbed by the pre-baked bun to be effective in growth suppression of the Bacillus spp. the moulds. The pre-baked buns absorb most of the ethanol from the package headspace, and the ethanol content of the products is approximately 0.8 weight% after 21 days. This largely exceeds the overall migration limit of 60 mg kg(-1) food (0.006 weight%).
Authors:
I Franke; E Wijma; K Bouma
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Food additives and contaminants     Volume:  19     ISSN:  0265-203X     ISO Abbreviation:  Food Addit Contam     Publication Date:  2002 Mar 
Date Detail:
Created Date:  2002-02-08     Completed Date:  2002-02-27     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8500474     Medline TA:  Food Addit Contam     Country:  England    
Other Details:
Languages:  eng     Pagination:  314-22     Citation Subset:  IM    
Affiliation:
Inspectorate for Health Protection and Veterinary Public Health, Groningen, The Netherlands.
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MeSH Terms
Descriptor/Qualifier:
Bacillus / drug effects,  growth & development
Ethanol / pharmacology*
Food Microbiology*
Food Packaging / methods*
Food Preservation / methods*
Humans
Penicillium / drug effects,  growth & development
Time Factors
Yeasts / drug effects,  growth & development,  isolation & purification
Chemical
Reg. No./Substance:
64-17-5/Ethanol

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


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