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Rapid Detection of Aspergillus flavus Contamination in Peanut with Novel Delayed Luminescence Spectra
Author(s) -
Chen WenLi,
Xing Da,
Chen WeiGui
Publication year - 2005
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1562/2005-05-23-rc-538
Subject(s) - aspergillus flavus , contamination , luminescence , aflatoxin , chemistry , aspergillus , analytical chemistry (journal) , chromatography , food science , materials science , microbiology and biotechnology , biology , optoelectronics , ecology
Employing a luminescence spectrometer the usefulness of light‐induced delayed luminescence (DL) for the detection of aflatoxinB1 (AfB1) contamination in whole peanut was studied. Peanut was artificially contaminated with Aspergillus flavus (7.5 × 10 5 conidia/mL) and incubated for 0–72 h. The DL and fluorescence spectra of contaminated peanut were obtained by a luminescence spectrometer. The correlation between the spectra and contamination levels was established. The DL and fluorescence intensity has a negative correlation with the AfB1 concentration. Our results suggested that the DL technique might be useful for the rapid and noninvasive evaluation of AfB1 contamination levels in whole peanut.