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Purification and characterization of antifungal δ-dodecalactone from lactobacillus plantarum AF1 isolated from kimchi

Title
Purification and characterization of antifungal δ-dodecalactone from lactobacillus plantarum AF1 isolated from kimchi
Authors
Yang E.J.Kim Y.-S.Chang H.C.
Ewha Authors
김영석
SCOPUS Author ID
김영석scopus
Issue Date
2011
Journal Title
Journal of Food Protection
ISSN
0362-028XJCR Link
Citation
vol. 74, no. 4, pp. 651 - 657
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The aim of this study was to purify and identify an antifungal compound from Lactobacillus plantarum AF1, which was isolated from kimchi. The antifungal compound was purified by solid-phase extraction and recycling preparative high-performance liquid chromatography, and its structure was elucidated by using gas chromatography-mass spectrometry (GC-MS). The active compound from L. plantarum AF1 was confirmed to be δ-dodecalactone (molecular weight, 198.3) by comparison of its gas chromatographic retention time with the mass spectrum of standard δ-dodecalactone. The MICs of δ-dodecalactone against various fungi and bacteria ranged from 350 to 6,250 μg/ml. δ-Dodecalactone showed strong antifungal activity against molds Aspergillus flavus, A. fumigatus, A. petrakii, A. ochraceus, A. nidulans, and Penicillium roqueforti. The three tested yeast strains of Candida albicans were more resistant than the molds. Antibacterial activity was evident but less potent than the antifungal activity. δ-Dodecalactone produced pleasurable (fruity) organoleptic characteristics. The results indicate the potential of the δ-dodecalactone produced by L. plantarum AF1 as a biopreservative and flavoring compound, as well as a biosafe remedy for candidiasis. Copyright © International Association for Food Protection.
DOI
10.4315/0362-028X.JFP-10-512
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엘텍공과대학 > 식품공학전공 > Journal papers
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