Document Detail


Evolution of pH during immersion of meat protein matrices in acidic marinades.
MedLine Citation:
PMID:  22041099     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The pH value is a fundamental datum to be monitored during marination. A method is proposed for calculating the evolution of pH of turkey meat cubes during marination in an acetic acid solution. It is based on measurement of the buffering capacity by acidification using a strong acid. A calculation based on the dissociation equilibrium of acetic acid is used to estimate the mean pH reached, factoring in the acid content of the meat. For long marination times, the calculated pH is over-evaluated in relation to the experimental value. This can be explained by the significant loss of buffering substances during immersion. After 6h of immersion, the matrix's proton binding capacity may be reduced to just 20% of the initial value. Hence to improve the prediction of meat cut pH during marination, it is necessary to factor in the outgoing flow of buffering substances.
Authors:
T Goli; P Bohuon; J Ricci; A Collignan
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-10-15
Journal Detail:
Title:  Meat science     Volume:  -     ISSN:  1873-4138     ISO Abbreviation:  -     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2011-11-1     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101160862     Medline TA:  Meat Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
Affiliation:
CIRAD, UMR QualiSud, Food Process Engineering TA B-95/16, 73, rue JF Breton 34398 Montpellier cedex 5, France.
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