Penicillium Blue-Green Mold

We then needed to find a way to treat the outer surface of the fruits, where most of the organisms initially propogate in their hosts. In the commercial marketplace the familiar blue-green molds produced by such spores as Penicillium digitatum are the problem. A few infected fruits within a case can ruin a shipment under normal conditions in three to four days. Obviously, deep-rooted organisms will not be controlled by the shallow electron treatment. 

Plate 20 Penicillium, the Blue Green Mold and Cladospohum, the Dark Green Mold, growing on malt agar media. 

Fruit Decay. Finally in the field of diseases are the decays of fruit in transit. Much of the Brazilian fruit is exported, giving a long period from harvest to utilization and in Argentina a slow rail transport plus the use of uninsulated metal cars adds to the problem. Stem-end rot (Diaporthe citri Wolfe and Diplodia natalen-sis Pole-Evans) plus blue and green molds (Penicillium italicum, Wehmer, and P. digitatum, Sacc.) are rampant, and while the Dowicide A (sodium orthophenyl phe-nate)-Hexamine (hexamethylenetetramine) treatment worked out in Florida is satisfactory, import difficulties stand in the way of obtaining needed materials. 

Order 3.— Plectascales, the blue and green molds. Examples Aspergillus and Penicillium. 

This compound (Formula 8.39) is particularly powerful against molds which cause the socalled blue mold rots, e. g., Penicillium italicum (blue-green-spored contact mold ) and Penicillium digitatum (green-spored mold). It is used for preserving the peels of citrus fruits and bananas. The... 

Molds are hlamentous microorganisms, that is, the cells stay attached to each other to form long hlaments. Many molds can form spores, which are generally different in colors, depending on the kind of mold. Species of Aspergillus often form black spores, while Penicillium is recognized by blue or green spores. Mold spores serve the purpose of reproduction, but they are not resistant to heat or chemicals. 

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