Rapid Detection of Aspergillus flavus Contamination in Peanut with Novel Delayed Luminescence Spectra

WenLi Chen; Da Xing; WeiGui Chen

doi:10.1562/2005-05-23-RC-538

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WenLi Chen,¹ Da Xing,^2,* WeiGui Chen¹

¹aCollege of Life Science, South China Normal University, Guangzhou 510631, China
²bLaser Life Science Institute, South China Normal University, Guangzhou 510631, China

^** To whom correspondence should be addressed: Laser Life Science Institute, South China Normal University, Guangzhou 510631, China, Fax: +86-20-85216052; xingda@scnu.edu.cn

Abstract

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 × 10⁵conidia/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.

Citation Download Citation

WenLi Chen, Da Xing, and WeiGui Chen "Rapid Detection of Aspergillus flavus Contamination in Peanut with Novel Delayed Luminescence Spectra," Photochemistry and Photobiology 81(6), 1361-1365, (1 November 2005). https://doi.org/10.1562/2005-05-23-RC-538

Received: 23 May 2005; Accepted: 1 June 2005; Published: 1 November 2005

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