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Absolute quantitative analysis for sorbic acid in processed foods using proton nuclear magnetic resonance spectroscopy.
MedLine Citation:
PMID:  22704472     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
An analytical method using solvent extraction and quantitative proton nuclear magnetic resonance (qHNMR) spectroscopy was applied and validated for the absolute quantification of sorbic acid (SA) in processed foods. The proposed method showed good linearity. The recoveries for samples spiked at the maximum usage level specified for food in Japan and at 0.13gkg(-1) (beverage: 0.013gkg(-1)) were larger than 80%, whereas those for samples spiked at 0.063gkg(-1) (beverage: 0.0063gkg(-1)) were between 56.9 and 83.5%. The limit of quantification was 0.063gkg(-1) for foods (and 0.0063gkg(-1) for beverages containing Lactobacillus species). Analysis of the SA content of commercial processed foods revealed quantities equal to or greater than those measured using conventional steam-distillation extraction and high-performance liquid chromatography quantification. The proposed method was rapid, simple, accurate, and precise, and provided International System of Units traceability without the need for authentic analyte standards. It could therefore be used as an alternative to the quantification of SA in processed foods using conventional method.
Authors:
Takashi Ohtsuki; Kyoko Sato; Naoki Sugimoto; Hiroshi Akiyama; Yoko Kawamura
Publication Detail:
Type:  Journal Article     Date:  2012-05-17
Journal Detail:
Title:  Analytica chimica acta     Volume:  734     ISSN:  1873-4324     ISO Abbreviation:  Anal. Chim. Acta     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-06-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370534     Medline TA:  Anal Chim Acta     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  54-61     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier B.V. All rights reserved.
Affiliation:
National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan.
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