title: Rapid detection of Aspergillus flavus contamination in peanut with novel delayed luminescence spectra.
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 x 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.
authors.affiliation: College of Life Science, South China Normal University, Guangzhou 510631, China.
authors.forename: WenLi
authors.initials: W
authors.lastname: Chen
authors.forename: Da
authors.initials: D
authors.lastname: Xing
authors.forename: WeiGui
authors.initials: W
authors.lastname: Chen
mesh_terms: D016604:Aflatoxin B1 / Q000032:analysis*; D010367:Arachis / Q000382:microbiology*; D001231:Aspergillus flavus / Q000254:growth & development*; D008163:Luminescent Measurements / Q000379:methods*; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence / Q000379:methods; D013997:Time Factors
chemical_list: D016604:Aflatoxin B1