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Infrared Detection of Aspergillus parasiticus Growth of Moist Sorghum Grain 1
Author(s) -
Banks J. C.,
Lynd J. Q.
Publication year - 1971
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1971.00021962006300020047x
Subject(s) - aspergillus parasiticus , sorghum , aflatoxin , aspergillus , inoculation , mycotoxin , horticulture , agronomy , infrared , mycelium , biology , food science , chemistry , botany , optics , physics
A method is presented for detecting Aspergillus parasiticus , Speare, growth on sterile moist sorghum grain using a dual lens infrared source and an IR scope with Type 413 IR Polaroid film recordings. Yellow to pale green “halo” patterns on inoculated whole grain were apparent with the IR scope 12 to 24 hr before visible mycelial development and aflatoxin formation. Highest B 1 and G 1 aflatoxin levels occurred with 120 to 144 hr incubations at 30 C in saturated humidity.