固體培地에서 Aflatoxin生成에 미치는 Temperature Cycli ng 의 影響

Influence of Temperature Cycling on the Production of Aflatoxin in Solid Media

This study was designed to observe the effect of temperature cycling on the production of aflatoxin by Aspergillus parasiticus R-716 in rice, barley, peanut and soybean. In those media, temperature cycling resulted in more total aflatoxin production by the strain of R-716 than constant incubation at 28°C and natural condition did. Especially, high level of total aflatoxin (1826μg/30g) in rice medium at temperature cycling was produced. The intensity of yellow color of chloroform extracts correlated with the concentration of aflatoxin, and the ratio of aflatoxin B₁ to aflatoxin B₂, G₁, G₂ is lower at temperature cycling condition than at 28°C.