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Food Safety

October 30, 2024. Changes for migration to IWP.
NOTE: Research is ongoing - recommendations may change. Please refer to the United States Department of Agriculture (USDA) Food Safety and Inspection Service (FSIS) for the most current recommendations:  FSIS.USDA.gov and FoodSafety.gov

This food safety page is about preventing foodborne illnesses. The science behind food safety is understanding which microorganisms are associated with food; which of those can cause illness (pathogens); how they spread; and what conditions affect their growth rate. Food handling guidelines seek to minimize the spread and limit growth of bacteria that are associated with foodborne illness.

Excerpts from FSIS.USDA.gov How Temperatures Affect Food

Bacteria exist everywhere in nature. They are in the soil, air, water and the foods we eat. When bacteria have nutrients (food), moisture, time and favorable temperatures, they grow rapidly, increasing in numbers to the point where some can cause illness.

Bacteria grow most rapidly in the range of temperatures between 40°F and 140°F, doubling in number in as little as 20 minutes. This range of temperatures is often called the "Danger Zone."

If raw meats have been mishandled (left in the "Danger Zone" too long), bacteria may grow and produce toxins which can cause foodborne illness. Those toxins that are heat resistant are not destroyed by cooking. Therefore, even though cooked, meat and poultry mishandled in the raw state may not be safe to eat even after proper preparation.

What can you do to keep your family's food safe from harmful bacteria?

Safe Handling of Fruits & Vegetables [UCANR #21590]
Avoid Unsafe Food and Water

  • Don't eat food if you question its safety. 
    See FDA.gov Safety Recalls, Market Withdrawls and Safety Alerts.
    Beware of food contaminated by pantry pests through body parts and their by-products. Pantry pests might even introduce microbes into the food that could produce mycotoxins.
  • Treat water if in a questionable area or if a disaster hits and water pipes may be broken.
  • If you grow food at home, read Food Safety in Your Home Vegetable Garden (UCANR Publication #8366) for ways to reduce the risk of contaminating your home-grown food.
  • Wash fruits and vegetables, but not meat and poultry. Read "Safe Handling" [UCANR #21590] for steps to follow when selecting and storing fruits and vegetables to be sure they are not contaminated with harmful bacteria.

Note: Infants, the elderly, pregnant women and anyone with a compromised immune system is at greater risk.

Follow Food Handling Guidelines

from USDA FSIS Food Safety Education: BeFoodSafe tips and Food Safety Basics

Safe steps in food handling, cooking, and storage are essential in preventing foodborne illness. You can't see, smell, or taste harmful bacteria that may cause illness. In every step of food preparation, follow the four guidelines to keep food safe. Take a look at our food safety tip sheet, here, and the USDA BeFoodSafe Tips shown below. More information when you select a safe food handling icon or name:

CLEAN
CLEAN kitchen and personal hygiene.

Bacteria can spread throughout the kitchen and get on hands, cutting boards, knives, and countertops. Frequent cleaning can keep that from happening.

Wash hands with soap and warm water for 20 seconds before and after handling food.

Run cutting boards and utensils through the dishwasher or wash them in hot soapy water after each use.

Keep countertops clean by washing with hot soapy water after preparing food.

SEPARATE
SEPARATE
to avoid cross-contamination.

Cross-contamination is how bacteria spread. Keep raw meat, poultry, and seafood and their juices away from read-to-eat food.

Use one cutting board for raw meat, poultry, and seafood and another for salads and ready-to-eat food.

Keep raw meat, poultry, and seafood and their juices apart from other food items in your grocery cart.

Store raw meat, poultry, and seafood in a container or on a plate so juices can't drip on other foods.

COOK
COOK and reheat foods adequately.

Even for experienced cooks, the improper heating and preparation of food means bacteria can survive.

Use a food thermometer - you can't tell food is cooked safely by how it looks.  Keep food hot (140°F or above) after cooking.

Stir, rotate the dish, and cover food when microwaving to prevent cold spots where bacteria can survive. Microwave food thoroughly (165°F or above). 

Bring sauces, soups and gravies to a rolling boil when reheating.

CHILL
CHILL to keep foods at safe temperatures.

Bacteria spreads fastest at temperatures between 40°F - 140°F, so chilling food properly is one of the most effective ways to reduce the risk of foodborne illness. 

Cool the fridge to 40°F or below, and use an appliance thermometer to check the temperature. Set the freezer temperature to 0°F or below.

Chill leftovers and takeout foods within 2 hours, and divide food into shallow containers for rapid cooling.

Thaw or marinate meat, poultry, and seafood in the fridge, not on the counter, and don't overstuff the fridge. Know when to throw it out.

More on Food Safety

Download this Handy Quick Reference Brochure (printable trifold):

Recommended Reading:

Reference Collections:

Reference Websites:

Have a food safety question for the USDA?

  • Call the USDA Meat and Poultry Hotline toll free at 1-888-MPHotline (1-888-674-6854) for questions about meat, poultry, or egg products.
    The Hotline is open year-round Monday through Friday from 10 a.m. to 6 p.m. ET (English or Spanish).
  • AskUSDA! (replaces AskKaren) - supports call, email and chat
      (Spanish) Pregúntele a Karen