Document Detail

Reevaluation of Monier-Williams method for determining sulfite in food.
MedLine Citation:
PMID:  3949694     Owner:  NLM     Status:  MEDLINE    
The Monier-Williams distillation procedure has a long history of successful use for determining sulfite in fruit products and wine; however, a systematic evaluation of its accuracy and precision with other food matrices has not been undertaken. We found that the Monier-Williams distillation yielded greater than 90% recovery of sulfite added to foods such as table grapes, hominy, dried mangoes, and lemon juice. Less than 85% recovery was obtained with broccoli, soda crackers, cheese-peanut butter crackers, mushrooms, and potato chips. These results may, in fact, accurately reflect the residual levels of sulfite if a portion of the sulfite undergoes irreversible reaction with some food components. Analysis of commercial food products gave sulfite levels ranging from 1400 ppm in dried apple slices to 25 ppm in cream sherry.
C R Warner; D H Daniels; F L Joe; T Fazio
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal - Association of Official Analytical Chemists     Volume:  69     ISSN:  0004-5756     ISO Abbreviation:  J Assoc Off Anal Chem     Publication Date:    1986 Jan-Feb
Date Detail:
Created Date:  1986-04-18     Completed Date:  1986-04-18     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7505559     Medline TA:  J Assoc Off Anal Chem     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  3-5     Citation Subset:  IM    
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MeSH Terms
Chemical Phenomena
Food Analysis*
Indicators and Reagents
Sulfites / analysis*
Sulfur Dioxide / analysis
Reg. No./Substance:
0/Indicators and Reagents; 0/Sulfites; 7446-09-5/Sulfur Dioxide

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