Effects of Phosphate Solutions on Aflatoxin Production in a Synthetic Medium and in Frankfurters†

Abstract

Mold growth, sporulation, and aflatoxin B1 and G1 production were studied in Sabouraud dextrose agar (SDA) and frankfurters inoculated with Aspergillus flavus or Aspergillus parasiticus. Each of four phosphates, sodium polyphosphate glassy (SPG), sodium acid pyrophosphate (SAPP), tetrasodium pyrophosphate (TSPP), and Brifisol 414 (a blend of SPG, SAPP, and TSPP) were incorporated into the SDA (1 or 2%) or used as dipping solutions (5%) for the frankfurters. In SDA at 30°C, significant (P < 0.05) reductions in aflatoxin B1 and G1 production by A. flavus and A. parasiticus occurred when 1% SPG, 1% TSPP, 1% Brifisol 414, and 2% SAPP were present. In frankfurters, A. flavus B1 aflatoxin production was increased with SAPP and TSPP.