Is the presence of harmful substances not originally present in food?
Containing harmful substances not originally present in food. A potentially dangerous food condition due to contamination, growth of pathogens, survival of pathogens, or presence of toxins.
What is the presence of pathogenic microorganisms or harmful substances in food?
Contamination
What is an example of food contamination?
Chemical contamination can lead to acute poisoning or long-term diseases, such as cancer. Foodborne diseases may lead to long-lasting disability and death. Examples of unsafe food include uncooked foods of animal origin, fruits and vegetables contaminated with faeces, and raw shellfish containing marine biotoxins.
Are bacteria in food always harmful?
Bacteria, viruses and parasites are the sources of many food poisoning cases, usually due to improper food handling. Some bacteria, in small amounts, are not harmful to most healthy adults because the human body is equipped to fight them off.
What are the 2 types of bacteria harmful to food?
Other important bacteria and viruses that cause foodborne illness include:
- Bacillus cereus.
- Botulism.
- Hepatitis A.
- Shigella.
- Staphylococcus aureus (Staphylococcal [Staph] Food Poisoning)
- Vibrio Species Causing Vibriosis.
What foods grow bacteria?
Bacteria enjoy foods that are neutral to slightly acidic. They will not grow in highly acidic foods like lemons and vinegars, but will grow well in vegetables, meat and some fruits. Temperature needs to be considered for bacterial growth.
Do bacteria require oxygen to grow?
Whereas essentially all eukaryotic organisms require oxygen to thrive, many species of bacteria can grow under anaerobic conditions. Bacteria that require oxygen to grow are called obligate aerobic bacteria.
What causes bacteria to grow?
Moisture – Bacteria need moisture in order to grow. Food – Food provides energy and nutrients for bacteria to grow. High risk foods particularly protein foods such as chicken and dairy products are rich in nutrients and moisture and so promote bacterial growth.
What are the 3 conditions needed for bacterial growth?
The three fundamental requirements related to bacterial life are temperature, oxygen and food.
Where do bacteria grow best?
Bacteria can live in hotter and colder temperatures than humans, but they do best in a warm, moist, protein-rich environment that is pH neutral or slightly acidic. There are exceptions, however. Some bacteria thrive in extreme heat or cold, while others can survive under highly acidic or extremely salty conditions.
Does bacteria grow better in light or dark?
In the light, both strains of bacteria take in more organic carbon, including sugars, metabolize them faster. In the dark, those functions are reduced, and the bacteria increase protein production and repair, making and fixing the machinery needed to grow and divide.
What is the best temperature for bacteria to grow?
between 40°F and 140°F
At what temp does bacteria stop growing?
Bacteria are all around us, including those that can cause food poisoning. Food poisoning bacteria grow best at temperatures between 5°C and 60°C. This is called the Temperature Danger Zone. Keeping potentially hazardous foods cold (below 5°C) or hot (above 60°C) stops the bacteria from growing.