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food-borne illness

Will The Food Sitting In Your Hot Car Make You Sick?

July 25, 2014 By Penny Klatell, PhD, RN Leave a Comment

Can food that stays in a hot car for a long time make you sick?
Can food that stays in a hot car for a long time make you sick?

It’s hot outside.  When you open your car door after it’s been sitting in the parking lot you’re hit with a blast of heat that seems hotter than an oven.

The Temperature Rises Quickly Inside A Closed Car

Very quickly — even when it’s only moderately warm outside.

A study found that at 9AM when the outside temperature was 82 degrees, the temperature inside a closed car was 109 degrees. At 1:30PM, when the outside temperature rose to 112 degrees, the temperature inside a closed car reached 124 degrees.

Cracking the windows helps, but only a little bit. With four windows cracked, at 10AM when the temperature was 88 degrees outside, inside the car it was 103 degrees.  At 2PM when the outside temperature rose to 110 degrees, the internal temperature rose to 123 degrees. Certainly not safe conditions for living creatures, especially kids and dogs both of whom are particularly vulnerable to extreme heat.

Hot Weather and Food-borne Illness

Hot weather and food-borne illness can be evil partners. Forty-eight million people are affected by food-borne illnesses each year which, in the US, result in an estimated 3,000 deaths. More than 250 food-borne diseases have been identified. They are common and preventable public health challenges.

Most food-borne illnesses can be prevented with proper cooking or processing, both of which destroy harmful bacteria. It’s really important to keep cold food cold and hot food hot because food that stays set out for a long time can enter “The Danger Zone,” or temperatures between 41˚F and 140˚F where bacteria multiply most rapidly.

What About The Prepared Food You Just Bought?

Extreme heat is certainly not a safe environment for fresh and prepared food, either.  Pity the poor groceries or take-out you just bought that’s sitting in extremely hot temperatures in the back of your car.  Shelf, cupboard, and boxed food may be fine, but for meat, deli, dairy, cut food like fresh fruit, and prepared foods (salad, fried chicken, Chinese take-out, pizza) it’s not a good situation.  Why?

When you give bacteria the conditions they like:  warmth, moisture, and nutrients, they’ll grow.   A single bacterium that divides every half hour can result in 17 million offspring in 12 hours.

Consequently, the food you just bought might spoil because bacteria present in the food have multiplied like rabbits in your car in the hot conditions that are ideal for food spoilage.  Perishable food can stay safely unrefrigerated only for two hours if the air temperature is under 90 degrees – and only for one hour if the temperature is 90 degrees or higher.  Follow this rule for picnics, barbecues, and buffets, too.

Take Pity on Your Food and Protect Your Family and Guests

Be aware of the type of food you’re buying.  If you have perishable items, take some of these steps:

  • Think about your route and how many errands you have to do. Stop at the cleaners or for coffee before grocery shopping — not afterward when your groceries will be baking in the car.
  • Make wise choices.  When it’s hot outside, take your perishable items straight home.  If you know you can’t go straight home take steps to keep your purchases cool – or buy food that doesn’t need refrigeration.
  • To be on the safe side, think about keeping a cooler, cold packs, or insulated bags in your car for perishable items.  Make sure the cooler hasn’t turned into a portable oven because it’s been sitting in the car for so long.
  • Buy a bag of ice if you need to for keeping cold stuff cold and frozen stuff frozen on the way home. Or, bring some frozen gel packs with you.
  • If you’re on a road trip, remember that food in your car is vulnerable.  The trip to the beach and then spreading your food out on a table or a blanket means that if it’s not in a cooler, it’s been in hot conditions for a long time. Just think — in the winter your car might be colder than your refrigerator.  Then there’s no problem stopping for coffee on the way home!

Eat Out Eat Well Magazine Issue 3Road trip: is there one in your future?

The Summer issue of Eat Out Eat Well Magazine is ready to help you eat well when you’re in the car or grabbing some food at rest stops or roadside diners.

Get it now from iTunes or the Google Play Store for $1.99 an issue or $4.99 for a yearly subscription (four seasonal issues).

Filed Under: Calorie Tips, Healthy Eating, Food Facts, Eating with Family and Friends, Shopping, Cooking, Baking, Snacking, Noshing, Tasting, Takeout, Prepared Food, Junk Food, Travel, On Vacation, In the Car Tagged With: eating on road trips, food in a hot car, food safety, food-borne illness, road trip food, shopping for food, transporting food

How Long Can Picnic and Barbecue Food Safely Stay Unrefrigerated?

June 18, 2014 By Penny Klatell, PhD, RN Leave a Comment

keep picnic and barbecue food safeThe picnic fixins’ or the take-out food that’s sitting in your car might turn out to be a big problem.  Boxed food might be fine in high temperatures, but meat, dairy, cut food like fresh fruit, salads, and prepared foods — not so good.

Perishable food may contain bacteria that can cause food-borne illnesses. Sitting in the temperature danger zone while in your car or at a picnic or campsite can cause those bad guys to multiply dramatically.

Most bacteria don’t go crazy below 40°F or above 140°F. The temperature range in between, known as the “Danger Zone,” is where they multiply rapidly and can reach harmful levels. A single bacterium that divides every half hour can result in 17 million offspring in 12 hours!

The Temperature Rises Quickly Inside A Car

The temperature rises quickly inside a closed car — even when it’s only moderately warm outside.

  • A study found that at 9AM (in some very hot place!) when the outside temperature was 82 degrees, the temperature inside a closed car was 109 degrees. At 1:30PM, it was 112 degrees outside and 124 degrees inside a closed car.
  • Cracking the windows helped, but only a little.  At 10AM, with four windows cracked, it was 88 degrees outside but 103 degrees inside the car.  At 2PM at 110 degrees outside it was 123 degrees inside the car.

Picnic Food and Temperature Control

To prevent bacteria in food from rapidly multiplying — which can lead to food borne illness — food has to be kept within a temperature range.

  • Don’t let your picnic food stay in the “Danger Zone” (between 40° F and 140° F) for more than 2 hours, or only for one hour if the outdoor temperature is higher than 90° F.
  • Perishable food can stay safely unrefrigerated for two hours if the air temperature is less than 90 degrees – and only for one hour if the temperature is 90 degrees or higher.
  • Keep hot foods hot: above 140°F.  Keep cold foods cold:  below 40°F.
  • Remember to include preparation, storage, and serving time in determining how long food has been out of the fridge or off the heat.

Transporting, Preparing, And Serving    

To prevent food-borne diseases, food safety is crucial both when you transport your food and when you prepare and serve it.

  • Think about the type of food you’re buying.  If you have perishable items do what you have to do to keep hot food hot and cold food cold.
  • What’s your route and how many errands do you have? Stop to buy beer and paper plates before you pick up the food — not after food shopping while your purchased food bakes in the car.
  • Keep a cooler, cold packs, or insulated bags in your car for perishable items.  Buy a bag of ice if necessary. Make sure the cooler hasn’t turned into a portable oven because it’s been sitting in the car for too long.
  • Be certain that raw meat and poultry are wrapped securely to prevent their juices from cross-contaminating other foods and from dripping on fruit and veggies that you’ve already washed.

At The Picnic Site

Food spoilage and cross-contamination are major issues when preparing and eating food outdoors in warm weather — especially when you’re at a remote site (like a camp or park) without a kitchen. Cross-contamination during preparation, grilling, and serving food is a prime cause of food-borne illness.

  • How will you keep things clean – not just the food, but the platters, utensils, and your hands?  Is there a source of potable (drinking) water that you can use for cooking and cleaning? You don’t want to use water that’s not safe to drink to wash your food or utensils.  If there isn’t, bring water or pack clean, wet cloths, moist towelettes, or paper towels for cleaning your hands and surfaces.
  • Wash your hands before and after handling food, and don’t use the same platter and utensils for both raw and cooked meat and poultry.
  • Keep hot food hot and cold food cold the entire picnic. The temperature spikes in direct sunlight so keep coolers in the shade.
  • Food shouldn’t be out of the cooler or off the grill for more than 2 hours (one hour when the temperature is above 90°F).
  • Keep perishable food like meat, chicken, and mayonnaise-based salads in the fridge and don’t stock the cooler until right before you leave home. Keep the cooler in the coolest part of the car while you’re traveling.
  • If you have a long trip consider freezing the food and putting it into the cooler frozen and allowing it to defrost (to a cold temperature, not warm) in transit.
  • Hot take-out food like ribs or chicken should be eaten within two hours of when it was plucked from the store. If you buy it ahead of time, first chill the food in your refrigerator and then before pack it in an insulated cooler.
  • Pack beverages in one cooler and perishable foods in another so the perishable foods won’t be repeatedly exposed to warm outdoor air temperatures as people keep opening the cooler for drinks. A full cooler will hold its cold temperature longer than one that’s partly full so pack plenty of extra ice or freezer packs to maintain a constant cold temperature.
  • Throw out any perishable foods from picnics or barbecues that have been kept out too long or not adequately chilled or heated. “If in doubt, throw it out.”

Filed Under: Calorie Tips, Healthy Eating, Food Facts, Travel, On Vacation, In the Car Tagged With: food "danger zone", food safety, food-borne illness, keeping food safe at picnics and barbecues

How To Keep Grilled Food Safe To Eat

June 13, 2013 By Penny Klatell, PhD, RN Leave a Comment

grilled-food-safe-to-eat

Ah!  Warm weather! Picnics and barbecues!  Awesome grilled food!

Whoops!  Picnics, barbecues, and grilling can create the perfect environment for the bacteria that already reside in food to rapidly multiply and become the cause of a foodborne illness.

It’s really important to follow safe food handling rules when you’re cooking perishable foods like meat, poultry, seafood, and eggs and Unfortunately, it’s way too easy to get a little lax about following food handling rules when the grill takes center stage.

 Here are some grilling guidelines:

  • Always wash your hands with soap and water before and after you handle the food.  Did you pick up the raw burger or the piece of fish or chicken with your fingers to put it on the grill?
  • When you marinate your food, let the food sit in the marinade in the refrigerator — not on the counter — or worse, out in the sun next to the grill.  Don’t use the marinade that the raw meat or poultry sat in on the cooked food. Instead, reserve part of the unused marinade to baste with or to use as a sauce.
  • Get those coals hot. Preheat the coals on your grill for 20 to 30 minutes, or until the coals are lightly coated with ash. If you’re using a gas grill, turn on the grill so it has enough time to thoroughly heat up.
  • Use a food thermometer (make sure you have one at home and one to pack for grilling at picnics) to be certain that the food reaches a safe internal temperature. The FDA recommends:
  •  Steaks and Roasts:  145 degrees F (medium rare), 160      degrees F (medium)
  • Fish:  145 degrees F
  • Pork:  145 degrees F
  • Ground beef:  160 degrees F
  • Egg dishes: 160 degrees F
  • Chicken breasts:  165 degrees F
  • Whole poultry:  165 degrees F
  • Shrimp, lobster, and crabs:  cook until pearly and opaque
  • Clams, oysters, and mussels:  cook until the shells are open
  • When the food is cooked, don’t put it on the same platter that you used to carry the raw food out to the grill, or the same tongs or spatula, either – unless they’ve been washed first in hot, soapy water.
  • Reusing without washing can spread bacteria from the raw juices to your cooked or ready-to-eat food. Better yet, bring a clean platter and utensils with you to the grill and remove the ones that the raw food has been on – it’s too easy to mistakenly reuse the raw food ones.
  • When grilled food is “ready” keep it hot until it’s served by moving it to the side of the grill rack, just away from the coals — or the burner if you’re using gas. This will keep it hot but prevent it from overcooking.
  • If you reheat food, make sure it reaches 165°F.
  • Cook only the amount of food that you think people will eat. It’s easy to cook more, but it’s a challenge to keep leftovers at a safe temperature. Throw out any leftovers that haven’t stayed within the safe temperature range.

Filed Under: Eating with Family and Friends, Entertaining, Buffets, Parties, Events, Shopping, Cooking, Baking, Takeout, Prepared Food, Junk Food, Travel, On Vacation, In the Car Tagged With: barbecue, food safety, food temperature, food-borne illness, grilled food, grilling, outdoor cooking, picnics, safe grilled food

How To Keep Your Food Safe In The Sun And Heat

June 11, 2013 By Penny Klatell, PhD, RN 1 Comment

picnic-food-safetyIt’s hot outside.  When you open your car door after it’s been sitting in the parking lot you’re hit with a blast of heat that seems hotter than an oven.

The Temperature Rises Quickly Inside A Car

The temperature rises quickly inside a closed car — even when it’s only moderately warm outside.

A study found that at 9AM (in some very hot place!) when the outside temperature was 82 degrees, the temperature inside a closed car was 109 degrees. At 1:30PM, it was 112 degrees outside and 124 degrees inside a closed car.

Cracking the windows helped, but only a little.  At 10AM, with four windows cracked, it was 88 degrees outside but 103 degrees inside the car.  At 2PM at 110 degrees outside it was 123 degrees inside.

None of these are safe conditions for living creatures, and not for keeping fresh and prepared food in your car, either.

What About The Food You’re Taking To A Picnic?

Pity the poor picnic fixins’ you just bought – or the take-out food you just picked up — sitting in extremely hot temperatures in the back of your car.  Boxed food might be fine, but meat, dairy, cut food like fresh fruit, salads, and prepared foods — not so good.

Most bacteria don’t go crazy below 40°F or above 140°F. But the temperature range in between, known as the “Danger Zone,” is where they multiply rapidly and can reach harmful levels. A single bacterium that divides every half hour can result in 17 million offspring in 12 hours!

Raw meat and poultry may contain bacteria that can cause food borne illnesses, and sitting in the temperature danger zone can cause those bad guys to multiply dramatically. Meat and poultry have to be cooked to destroy bacteria and should be kept at temperatures that are either too hot or too cold for these bacteria to grow.

Picnic Food And Temperature Control

To prevent bacteria in food from rapidly multiplying which leads to food borne illness, food has to be kept at certain temperatures to prevent the growth of food borne bacteria. The key: don’t let your picnic food stay in the “Danger Zone” (between 40° F and 140° F) for more than 2 hours, or only for one hour if the outdoor temperature is higher than 90° F.

Perishable food can stay safely unrefrigerated for two hours if the air temperature is less than 90 degrees – and only for one hour if the temperature is 90 degrees or higher.

Keep hot foods hot: above 140°F.  Keep cold foods cold:  below 40°F.

Remember to include preparation, storage, and serving time in determining how long food has been out of the fridge or off the heat.

Transporting, Preparing, And Serving

To prevent food borne diseases, food safety is crucial both when you transport your food and when you prepare and serve it.

Transporting Your Food

  • Think about the type of food you’re buying.  If you have perishable items do what you have to do to keep hot food hot and cold food cold.
  • Think about your route and how many errands you have to do. Stop to buy beer and paper plates before you pick up the food — not afterward while it’s baking in the car.
  • To be on the safe side, keep a cooler, cold packs, or insulated bags in your car for perishable items.  Make sure the cooler hasn’t turned into a portable oven because it’s been sitting in the car for so long.
  • Be certain that raw meat and poultry are wrapped securely to prevent their juices from cross-contaminating other foods and dripping on fruit and veggies that you’ve already washed.
  • Buy a bag of ice if you need to for keeping cold stuff cold and frozen stuff frozen or bring some frozen gel packs with you.

At The Picnic Site

  • Food spoilage and cross-contamination are major issues when preparing and eating food outdoors in warm weather — especially when you’re at a remote site (like a camp or park) without a kitchen.
  • How will you keep things clean – not just the food, but the platters, utensils, and your hands?  Is there a source of potable (drinking) water that you can use for cooking and cleaning? You don’t want to use water that’s not safe to drink to wash your food or utensils.  If there isn’t, bring water or pack clean, wet cloths, moist towelettes, or paper towels for cleaning your hands and surfaces. Cross-contamination during preparation, grilling, and serving food is a prime cause of food borne illness.
  • Wash your hands before and after handling food, and don’t use the same platter and utensils for both raw and cooked meat and poultry.
  • Keep hot food hot and cold food cold the entire picnic – keeping food at unsafe temperatures is a major cause of food borne illness. The temperature spikes in direct sunlight so keep coolers in the shade.
  • Food shouldn’t be out of the cooler or off the grill for more than 2 hours (one hour when the temperature is above 90°F).
  • Perishable and cooked foods like meat, chicken, and mayonnaise-based salads have to be kept cold, too. Keep cold food in the fridge and don’t stock the cooler until right before you leave home. Keep the cooler in the coolest part of the car while you’re traveling. (FYI: don’t stuff the refrigerator because cool air has to circulate to keep food safe.)
  • If you have a long trip consider freezing the food and putting it into the cooler frozen and allowing it to defrost (to a cold temperature, not warm) in transit.
  • If you bring hot take-out food like ribs or chicken, it should be eaten within two hours of when it was plucked from the store’s steam table. If you buy it ahead of time, first chill the food in your refrigerator and then before pack it in an insulated cooler.
  • Pack beverages in one cooler and perishable foods in another so the perishable foods won’t be repeatedly exposed to warm outdoor air temperatures as people keep opening the cooler for drinks. A full cooler will hold its cold temperature longer than one that’s partly full so pack plenty of extra ice or freezer packs to maintain a constant cold temperature.
  • Throw out any perishable foods from picnics or barbecues that have been kept out too long or not adequately chilled or heated. “If in doubt, throw it out.”

Filed Under: Eating with Family and Friends, Entertaining, Buffets, Parties, Events, Shopping, Cooking, Baking, Snacking, Noshing, Tasting, Takeout, Prepared Food, Junk Food, Travel, On Vacation, In the Car Tagged With: food safety, food storage, food-borne illness, perishable food, picnic food, picnics, temperature of food

Is Food In The Refrigerator And Freezer Safe To Eat After A Power Failure?

August 29, 2011 By Penny Klatell, PhD, RN Leave a Comment

The power is out all over town. Hurricane Irene has downed power lines up and down the East Coast and I’m sure many of you are wondering what to do with all that food in your fridge and freezer.

From numerous past experiences I know that one of the challenges in the aftermath of a power failure is figuring out what to do with the food in the fridge and freezer. 

The Basic Rules For Leftovers

If you cooked up a storm right before the actual storm (or whatever caused the power failure), according to the March 2010 edition of the Nutrition Action Healthletter (Center for Science in the Public Interest), you should follow these general rules:

  • The mantra is:  2 Hours–2 Inches–4 Days
  • 2 Hours from oven to refrigerator: Refrigerate or freeze your leftovers within 2 hours of cooking. Throw them away if they are out longer than that.
  • 2 Inches thick to cool it quick: Store your food at a shallow depth–about 2 inches–to speed chilling.
  • 4 Days in the refrigerator–otherwise freeze it:  use your leftovers that are stored in the fridge within 4 days. The exceptions are stuffing and gravy– which should be used within 2 days. Reheat solid leftovers to 165 degrees F and liquid leftovers to a rolling boil. Toss what you don’t finish.

Food Safety

The following food safety information is from the CDC:

  • If power is out for less than two hours food in the refrigerator and freezer will be safe to eat. While the power is out keep the refrigerator and freezer doors closed as much as possible.  This helps to keep food cold for a longer period of time.
  • The refrigerator will keep food safely cold for about four  hours if it is unopened. A full freezer will hold the temperature for approximately 48 hours (24 hours if it is half full) if the door remains closed.
  • If power is out for longer than 2 hours follow these guidelines:
    • Freezer:  “A freezer that is half full will hold food safely for up to 24 hours. A full freezer will hold food safely for 48 hours. Do not open the freezer door if you can avoid it.”
    • Refrigerator: “Pack milk, other dairy products, meat, fish, eggs, gravy, and spoilable leftovers into a cooler surrounded by ice. Inexpensive Styrofoam coolers are fine for this purpose. Use a food thermometer to check the temperature of your food right before you cook or eat it. Throw away any food that has a temperature of more than 40 degrees Fahrenheit.”

Can Thawed Or Partially Thawed Food In The Freezer Be Frozen Again?

According to the USDA:  “food may be safely refrozen if the food still contains ice crystals or is at 40 °F or below. You will have to evaluate each item separately. Be sure to discard any items in either the freezer or the refrigerator that have come into contact with raw meat juices. Partial thawing and refreezing may reduce the quality of some food, but the food will remain safe to eat. See the attached charts for specific recommendations.”

What If Flood Water Covered Food Stored On Shelves And In Cabinets? 

According to the USDA follow these guidelines for what can be kept or should be thrown out:  “Do not eat any food that may have come into contact with flood water. Discard any food that is not in a waterproof container if there is any chance that it has come into contact with flood water. Food containers that are not waterproof include those with screw-caps, snap lids, pull tops, and crimped caps. Also, discard cardboard juice/milk/baby formula boxes and home canned foods if they have come in contact with flood water, because they cannot be effectively cleaned and sanitized.”

For more specific information please visit this USDA site.

Filed Under: Calorie Tips, Healthy Eating, Food Facts, Food for Fun and Thought, Shopping, Cooking, Baking Tagged With: food, food facts, food for fun and thought, food safety, food storage, food-borne illness, frozen food, leftovers

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