Tortillas: Check the fine print on the package, because many tortilla manufacturers recommend refrigeration after opening. “That suggestion is for the prevention of mould,” said Keith Warriner, a professor in the department of food science at the University of Guelph in Ontario, Canada. “Although they’re considered a low-moisture food, it’s possible for condensation to occur, resulting in mould growth.” But if they sit on the counter for a while, it’s probably OK. “Tortillas can vary in terms of their formulation, but, generally speaking, refrigeration is used for quality extension, not for safety,” said Donald W. Schaffner, food science department chair at Rutgers University.
Article source: https://www.huffingtonpost.co.uk/entry/food-keep-in-fridge_uk_6a049789e4b0cdaf88dca593