บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Interaction between toxigenic Aspergillus flavus Link and mites (tyrophagus putrescentiae Schrank) on maize grains:effects on fungal growth and aflatoxin production.

FRANZOLIN, M.R., GAMBALE, W., CUER. R.G. and CORREA, B.

Journal of Stored Products Research 35: 215-224.

1999

บทคัดย่อ

Interaction between toxigenic Aspergillus flavus Link and mites (tyrophagus putrescentiae Schrank) on maize grains:effects on fungal growth and aflatoxin production.

The ability of mites of the species Tyrophagus putrescentiae to spread toxigenic Aspergillus flavus from contaminated maize to sterile grains was studied under contrled conditions.  Maize samples were distributed among boxes, each divided into two compartments by a barrier of polystyrene and having restricted access from one compartment to the other.  The boxes were maintained at 85% relative humidity and 25 or 30 C for 30, 60 or 90 days prior to analysis.  Moisture content values varied between 15.4 and 16.9%, being greater in grain samples containing both mites and fungi.  Water activity levels ranged from 0.86 to 0.89.  The presence of A. flavus contributed to the growth of mites and these, in turn, efficiently dispersed viable fungal spores from  the inoculated compartment to the uncontaminated one.  After 30 incubation days, the fungal population in all samples exceeded the international norms and after 90 days of incubation, aflatoxin was detected at over 23.7 ug/kg.