0 Morty Asked: July 10, 2019In: Biology Does yogurt need to be stored in the refrigerator? 0 I regularly buy yogurt from the store and leave it at room temperature for days 35celsius+ (it has an expiration date of 30 days) because I hate yogurt when it’s cold. In: Biology Share Facebook 3 Answers Voted Gnonthgol Added an answer on July 10, 2019 at 9:25 pm The expiration date is assuming reasonable storage conditions. Often this does include refrigerated storage as the cool conditions slows down any chemical or biological reaction in the food. So depending on the storage conditions and a lot of luck the food can stay good for much longer then the expiration date or not last as long. Different foods can go bad in different ways. Yogurt is already milk that have gone sour but using safe bacteria that improves the taste. So it will rarely go bad through bacterial infection again. However it can become infected by mold. And this will become visible before it becomes unhealthy to eat. Yogurt and a lot of other foods goes bad in a “safe” way. That is to say that when it goes bad you will see, smell or taste it very easy. Storing these in room temperature or with a broken seal will reduce its shelf time but there is little chance of getting ill from it as you would want to throw it away before it starts getting bad for you. Similarly if the milk in the refrigerator is a week past the expiration date but still looks, smells and tastes normal it is fine to drink. 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp jaksblaks Added an answer on July 10, 2019 at 9:11 pm no it doesn’t, but storing it in the fridge prevents it from spoiling faster. you might get only less than a day before mold starts forming if you leave it out especially if exposed to air. 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp JudgeHoltman Added an answer on July 10, 2019 at 9:27 pm It’s outside of design parameters but not inherently bad if you’re not expecting the yogurt company to honor the expiration date when you didn’t refrigerate it. Bad Bacteria needs temperature and air to grow. It’s air supply is limited by the packaging, so leaving it in warm temperatures means it can only grow so much. However, the packaging isn’t perfect. Air can still leach through the plastic, and little imperfections may exist within the lid and in the seal between lid and cup. Anything that lets air in will allow bacteria to grow exponentially faster. The packaging is designed to be in a refrigerator to accommodate for these imperfections. If the yogurt is cold, the bacteria may be able to breathe, but the lower temperature means it’s not really willing to reproduce. If you’ve been leaving it out at room temperature and haven’t been burned yet, it’s been mostly luck. When yogurt goes bad it’s VERY readily apparent. You clearly know the risks, so the only real risk is you wasting money on food that spoiled, or wasting a day on the shitter because you ate it anyway. 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Leave an answerLeave an answerCancel reply Attachment Select file Browse Featured image Select file Browse What is the capital of UK? ( London ) Save my name, email, and website in this browser for the next time I comment.