New Improved Method for Evaluation of Growth by Food Related Fungi on Biologically Derived Materials
2002
Bergenholtz, K.P. | Nielsen, P.V.
Biologically derived materials, obtained as commercial and raw materials (Polylactate (PLA), Polyhydroxybutyrate (PHB), potato, wheat and corn starch) were tested for their ability to support fungal growth using a modified ASTM G21-96 (American Society for Testing and Materials) standard as well as a new method where 10 μl of a spore suspension is placed in a spot on the test sample. The new method gave additional information about fungal growth on biologically derived materials, revealing a clear difference between survival and growth. PHB and PLA turned out to be most suitable for food packaging application as no significant growth was seen within 28 d of incubation at 30°C.
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