If the fridge is still at or below 40 °F, or the food has been above 40 °F for only 2 hours or less, it should be safe to eat.
The longer they're stored in the refrigerator, the more chance Listeria, a bacterium that causes foodborne illness, can grow, especially if the refrigerator temperature is above 40° F (4° C). Be alert for spoiled food. Anything that looks or smells suspicious should be thrown out.
The ideal refrigerator temperature is 40 degrees Fahrenheit or below in the main part of the fridge. The optimal temperature for keeping foods cold is 37 degrees Fahrenheit.
45C-55C (113F to 131F) is right in ``danger zone'', which is the most hospitable environment for food borne pathogens to grow. It's not an issue of pasteurization. It is safe food holding temperatures. So, you want to avoid storing perishable food in this temperature range for more than 2 hours.
The Department of Agriculture states bacteria multiply quickly in the "Danger Zone," which is temperatures beginning at 40°F (4.5°C). It's best to set your temperature gauge a few degrees below that. Most experts recommend that the ideal temperature setting for a refrigerator is between 35-38°F (1.6-3.3°C).
Also, remember that after this milk is opened it should be treated like regular milk and kept cool at 40° F or cooler. It's important to remember that opened milk, regardless of the type, should never be left in temperatures above 40° F for more than two hours.”
All refrigerated food should remain beneath 40 degrees Fahrenheit to prevent bacteria build up. Once the temperature exceeds this point, your food begins to run the risk of contamination. The most vulnerable food products in your fridge are those with high water content such as dairy, meat, poultry, eggs, and seafood.
Keep the refrigerator and freezer doors closed as much as possible to maintain the cold temperature. The refrigerator will keep food cold for about 4 hours if it is unopened. A full freezer will keep the temperature for approximately 48 hours (24 hours if it is half full) if the door remains closed.
How long can cheese sit out before it becomes unsafe to eat? For the best taste and quality, cheese should not be left out for longer than two hours at room temperature. Hard cheeses can be left out longer without becoming unsafe, but the quality and taste may change.
Per USDA guidelines, eggs should be stored at 40 degrees F or below to help minimize the risk of Salmonella. Eggs should be stored in their carton and placed in the coldest part of the refrigerator, not in the door.
Bacteria grow most rapidly in the range of temperatures between 40 ° and 140 °F, doubling in number in as little as 20 minutes. This range of temperatures is often called the "Danger Zone." That's why the Meat and Poultry Hotline advises consumers to never leave food out of refrigeration over 2 hours.
Safety of Specific Food Products
Hard cheese, butter and margarine: Well packaged products should remain safe; if odors or mold develops, discard the items. Milk products and mayonnaise: Discard if held above 40ºF for more than 2 hours. This category includes milk, cream, yogurt, and soft cheeses.
Use an appliance thermometer to be sure the temperature is consistently 40° F or below and the freezer temperature is 0° F or below. Refrigerate or freeze meat, poultry, eggs, seafood, and other perishables within 2 hours of cooking or purchasing.
If opened mayonnaise, tartar sauce, horseradish, commercial garlic in oil or other spreads (or any salads made with those items) have been held at 50 degrees or above for more than eight hours, discard them.
Food poisoning is an illness caused by eating contaminated food. It's not usually serious and most people get better within a few days without treatment. In most cases, food is contaminated by bacteria or a virus like: campylobacter – the most common cause of food poisoning.
Everything in your fridge typically chills at or just below 40 degrees Fahrenheit (4 degrees Celsius). Temperatures that climb above that level enter what's ominously referred to as the “Danger Zone.”
Answer From Katherine Zeratsky, R.D., L.D. Leftovers can be kept for 3 to 4 days in the refrigerator. After that, the risk of food poisoning goes up. If you don't think you'll be able to eat leftovers within four days, freeze them right away.
When storms or accidents cause the power to go out, customer-owners want to know how long they can safely keep refrigerated and frozen foods. If a power outage lasts two hours or less, you don't need to worry, but most perishable foods kept above 40 degrees for more than two hours should be discarded.
You can leave milk out of the fridge at room temperature for up to two hours, according to the USDA. “Leaving milk out too long can potentially lead to foodborne illness,” Amidor explains. “Pathogenic microorganisms like to grow in temperatures between 40 to 140 degrees.
The temperature range at which disease- causing bacteria grow best in time/temperature control for safety food (TCS) is called the temperature danger zone. Temperature danger zone is between 41°F and 135°F. TCS food must pass through the temperature danger zone as quickly as possible.
Bacteria and Mold: At 50 degrees, these nasty critters grow faster, making your food spoil quicker.
Never leave cooked eggs or egg dishes out of the refrigerator for more than 2 hours or for more than 1 hour when temperatures are above 90° F. Bacteria that can cause illness grow quickly at warm temperatures (between 40° F and 140° F).
Leaving food out too long at room temperature can cause bacteria (such as Staphylococcus aureus, Salmonella Enteritidis, Escherichia coli O157:H7, and Campylobacter) to grow to dangerous levels that can cause illness.
You may need to store the milk on its side so that it fits easily. Avoid keeping milk in one of the door's shelves. It's a tempting storage spot because it's easily accessible, but it's warmer toward the front, and temperature fluctuations caused by opening and shutting the door frequently make milk spoil faster.