Natural co-occurrence of aflatoxin B1, fumonisin B1 and ochratoxin A in barley and corn foods from Korea

J. W. Park, E. K. Kim, D. H. Shon, Y. B. Kim

Research output: Contribution to journalArticle

87 Citations (Scopus)

Abstract

A survey for aflatoxin B1 (AFB1), fumonisin B1 and ochratoxin A (OTA) was conducted on 127 samples that included 30 food-grade barley, 32 barley foods, 18 food-grade corn and 47 corn foods, randomly collected during 1998-99 in Seoul, Korea. The presence of mycotoxins was analysed by direct competitive enzyme-linked immunosorbent assay (ELISA), and most of the positive samples from ELISA were confirmed using high-performance liquid chromatography (HPLC). Recoveries of AFB1 and OTA spiked at 10 ng g-1 and FB1 spiked at 50 ng g-1 were 106, 87 and 105% by ELISA, whereas those by HPLC were 80, 79 and 84%, respectively. Detection limits by ELISA for AFB1, FB1 and OTA were 1, 5 and 5 ng g-1 and those by HPLC were 0.6, 35 and 1 ng g -1. Naturally occurring AFB1, FB1 and OTA were found in 4/32 (12%), 2/32(6%) and 4/32 (12%) samples of barley, foods with an average of 26, 16 and 9 ng g-1, respectively. AFB1 and FB1 in corn foods were detected in 4/47 (8%) and 9/47 (19%) samples with the average being 20 and 74 ng g-1, while no OTA was found in any corn foods samples. No AFB1, FB1 or OTA was detected in any of food-grade barley and corn samples. This is the first report on the natural co-occurrence of AFB1 and FB1 in barley and corn foods as well as on surveillance of OTA in Korea.

Original languageEnglish
Pages (from-to)1073-1080
Number of pages8
JournalFood Additives and Contaminants
Volume19
Issue number11
DOIs
Publication statusPublished - 2002 Nov 1

Keywords

  • Aflatoxin B (AFB)
  • Barley and corn foods
  • Enzyme-linked immunosorbent assay (ELISA)
  • Fumonisin B (FB)
  • High-performance liquid chromatography (HPLC)
  • Mycotoxins
  • Ochratoxin A (OTA)

ASJC Scopus subject areas

  • Food Science
  • Chemistry (miscellaneous)
  • Chemistry(all)
  • Toxicology
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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