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Improvement of distillation and extraction conditions for analysis of propionic acid in bakery products

Title
Improvement of distillation and extraction conditions for analysis of propionic acid in bakery products
Authors
Chung, HJJang, YJLee, MSOh, S
Ewha Authors
오상석
SCOPUS Author ID
오상석scopus
Issue Date
2003
Journal Title
FOOD SCIENCE AND BIOTECHNOLOGY
ISSN
1226-7708JCR Link2092-6456JCR Link
Citation
vol. 12, no. 4, pp. 337 - 341
Keywords
propionic acidgas chromatographyrecoveryextractiondistillation
Publisher
KOREAN SOCIETY FOOD SCIENCE & TECHNOLOGY-KOSFOST
Indexed
SCIE; SCOPUS; KCI WOS
Abstract
Propionates including propionic acid, sodium propionate and calcium propionate have been permitted in Korea to prevent rope and growth of mold in bakery products. Steam distillation, ion exchange chromatography and successive gas chromatography have been taken as an official method to analyze propionic acid in foods. Recovery of propionate in bakery products has been reported as 50-60%, which is relatively low. In this study, less effective ion exchange chromatography was omitted. Better recovery of propionic acid was achieved by adjusting distillation conditions using 20% of phosphoric acid and 300 mL distillate volume. Well defined extraction conditions with salt resulted in 80-90% of propionic acid recovery in bakery products. The improved analytical method gave consistent recovery (80-90%) of propionic acid when various bakery products were analyzed.
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엘텍공과대학 > 식품공학전공 > Journal papers
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