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The effect of water activity and temperature on growth of Alternaria arborescens was studied.
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The shortest germination time occurred at 0.995 aw, 25 °C and 30 °C.
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The highest growth rate (7.21 mm/day) was observed at 0.995 aw and 30 °C.
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A. arborescens was able to grow at refrigeration temperature (5 °C) even at low aw levels (0.950).