Document Detail

Gas chromatographic determination of glucono-delta-lactone in foods.
MedLine Citation:
PMID:  6643369     Owner:  NLM     Status:  MEDLINE    
A method is described for the gas chromatographic (GC) determination of glucono-delta-lactone in foods. A sample was homogenized with 60-70 degrees C water and filtered. The filtrate was buffered with NH4OH-NH4Cl pH 10 solution, and was passed through a QAE-Sephadex A25 column. The column was washed with water and glucono-delta-lactone was eluted with 0.1N HCl. An aliquot of the eluate was evaporated to dryness and derivatized with pyridine, N,O-bis(trimethylsilyl)trifluoroacetamide, and trimethylchlorosilane at room temperature. GC separation of glucono-delta-lactone as the TMS derivative was performed on a 2% OV-17 column at 180 degrees C. Recoveries from bread, jelly, soybean curd, and other foods fortified with 0.1% glucono-delta-lactone ranged from 92 to 106%, with standard deviations from 2.2 to 9.8%. The detection limit was approximately 0.025%.
T Tsuda; H Nakanishi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal - Association of Official Analytical Chemists     Volume:  66     ISSN:  0004-5756     ISO Abbreviation:  J Assoc Off Anal Chem     Publication Date:  1983 Nov 
Date Detail:
Created Date:  1984-01-27     Completed Date:  1984-01-27     Revised Date:  2000-12-18    
Medline Journal Info:
Nlm Unique ID:  7505559     Medline TA:  J Assoc Off Anal Chem     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1532-4     Citation Subset:  IM    
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MeSH Terms
Chromatography, Gas
Food Analysis*
Gluconates / analysis*
Reg. No./Substance:
0/Gluconates; 90-80-2/beta-glucono-1,5-lactone

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