What Is a Potentially Hazardous Food? Meaning, Examples & Safety Guidelines
Key Takeaways – Potentially Hazardous Foods (PHFs)
- PHFs are foods that support bacterial growth if not kept at safe temperatures.
- The temperature danger zone is between 5°C and 60°C.
- Common PHFs include meats, dairy, seafood, eggs, cooked rice, and ready-to-eat meals.
- High-risk groups such as children, elderly, pregnant, and immunocompromised individuals are most vulnerable.
- Australian laws require strict compliance with FSANZ food safety standards.
- Food handler training ensures compliance and prevents foodborne illness.
Definition of Potentially Hazardous Food (PHF)
Potentially hazardous food (PHF) refers to food items that require strict temperature control to prevent the growth of harmful microorganisms or the production of toxins that can lead to foodborne illnesses.
According to the NSW Food Authority, these are foods that contain:
- Moisture (favouring bacterial growth).
- Nutrients, particularly protein-rich content.
- Neutral or slightly acidic pH (above 4.6).
These conditions allow bacteria to multiply rapidly when not managed correctly.
The Role of Temperature in Food Safety
Temperature is critical in food safety. PHFs must be kept outside the temperature danger zone (5°C to 60°C), where harmful bacteria such as Salmonella, Listeria, and E. coli can multiply quickly.
Scientific Criteria for Identifying Potentially Hazardous Foods (PHFs)
The key scientific indicators for classifying PHFs are:
- Water activity (aw) above 0.85 – bacteria thrive in moist environments.
- pH level higher than 4.6 – low-acid foods are more prone to pathogens.
- Nutrient content – protein-rich foods support rapid bacterial growth.
Common Examples of Potentially Hazardous Foods
Animal-Origin Foods
- Raw or cooked meats and poultry
- Seafood (raw or cooked)
- Dairy products (milk, soft cheeses, cream)
- Eggs (especially cracked or pooled)
Plant-Based PHFs
- Cooked rice, pasta, and noodles
- Tofu and other soy products
- Cut melons and rockmelons
- Raw seed sprouts
Ready-to-Eat & Mixed Foods
- Sandwiches with meat, egg, or dairy fillings
- Salads containing cooked ingredients or dressings
- Quiches, custard tarts, and cream cakes
Foodborne Illness Risks from Potentially Hazardous Foods
Foodborne Illnesses from PHFs
Improperly handled PHFs may cause:
- Listeriosis (from soft cheeses, deli meats)
- Salmonellosis (from undercooked eggs, poultry)
- E. coli infections (from contaminated beef, salads)
- Clostridium perfringens (from poorly cooled meats)
Symptoms include diarrhoea, vomiting, fever, abdominal pain, and hospitalisation in severe cases.
High-Risk Populations and PHF Handling
- Children
- Elderly
- Pregnant women
- Immunocompromised individuals
Strict controls are critical in childcare, aged care, and healthcare facilities.
Legal and Regulatory Context in Australia
Temperature Control Regulations
Australian law requires that PHFs:
- Are stored at 5°C or below, or at 60°C or above.
- Remain outside the danger zone for no more than 2 hours (up to 4 hours before disposal).
These standards are set by Food Standards Australia New Zealand (FSANZ) and reinforced by the NSW Food Authority.
Food Handler Responsibilities Under the Law
Food handlers must:
- Keep accurate temperature control records.
- Follow strict hygiene practices (handwashing, avoiding cross-contamination).
- Complete mandatory food handling training.
Safe Handling, Storage, and Preparation of PHFs
Storage Best Practices
- Refrigerate PHFs at below 5°C.
- Use covered, clean containers.
- Apply FIFO (First In, First Out) to reduce spoilage.
Cooking & Cooling Procedures
- Cook meats to safe internal temperatures (e.g., 75°C for poultry).
- Cool cooked PHFs from 60°C to 21°C within 2 hours, then to 5°C within 4 hours.
- Reheat PHFs to at least 60°C before serving.
Personal Hygiene and Food Handler Conduct
- Wash hands before and after handling food.
- Use gloves and hairnets where appropriate.
- Report illness and avoid handling food when unwell.
Importance of Training for Food Handlers
Available Food Safety Training in Australia
- DoFoodSafely (free online training).
- Food Safety Supervisor (FSS) certification.
- Accredited food handling training.
Benefits of Ongoing Training
- Improves compliance.
- Reduces food safety risks.
- Builds a culture of safety in workplaces.
Learn more with CPR First Aid’s Food Safety Training Courses for compliance and workplace safety.
FAQs
What does potentially hazardous food mean?
Foods requiring temperature control to prevent bacterial growth or toxin formation.
What is the temperature danger zone for PHFs?
Between 5°C and 60°C.
Can cooked rice be a potentially hazardous food?
Yes, because it provides moisture and nutrients for bacterial growth.
Why is raw chicken considered hazardous?
It can carry Salmonella and other pathogens if not cooked or stored correctly.
How do I know if a food is a PHF?
If it is moist, low-acid, and nutrient-rich, requiring refrigeration or heating.
What are the storage rules for potentially hazardous food?
Store at ≤5°C or ≥60°C; limit time outside these temperatures.
Is tofu a potentially hazardous food?
Yes, tofu is moist and protein-rich, making it prone to contamination.
What food safety course should I take in Australia?
Consider accredited food handling or Food Safety Supervisor (FSS) training.
What are the legal responsibilities for PHFs in the workplace?
Temperature control, accurate records, hygiene, and compliance with food safety laws.
How can I prevent food poisoning when handling PHFs?
Follow safe storage, cooking, cooling, and hygiene practices.
TL;DR
Potentially hazardous foods (PHFs) are nutrient-rich, moist, low-acid foods that require strict temperature control. Keep them outside the 5°C–60°C danger zone, follow FSANZ standards, and ensure food handler training to protect public health and comply with Australian law.
