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Effect of the post‐dry heat treatment temperature on the recovery of ascospores of Neosartorya fischeri
Author(s) -
Gomez M. M.,
Busta F. F.,
Pflug I. J.
Publication year - 1989
Publication title -
letters in applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.698
H-Index - 110
eISSN - 1472-765X
pISSN - 0266-8254
DOI - 10.1111/j.1472-765x.1989.tb00223.x
Subject(s) - relative humidity , biology , maximum temperature , humidity , botany , microbiology and biotechnology , physics , thermodynamics
Neosartorya fischeri ascospores were subjected to a dry heat treatment at 95°C, 50% relative humidity for 30 and 60 min. The effect of the temperature of the recovery buffer (0–02% v/v Tween 80 in Butterfield's Buffer) was evaluated. As the temperature of the buffer increased, there was an exponential increase in the number of survivors, followed by a levelling off and, in some cases, a decrease. This behaviour may indicate temperature activation of dormant ascospores or reactivation of ascospores rendered dormant by the dry heat treatment. The results also suggest that the rehydration process is affected by temperature.