salmonella
In the US, the Food and Drug Administration department recommends a minimum temperature of 135 º F (57 º C). The danger zone is 41º F - 135º F. Potentially hazardous foods exposed to this temperature range for a cumulative total of more than 4 hours are not safe to eat. Pasta and rice dishes should be cooled to below 41ºF as quickly as possible to prevent the growth of Bacillus cereus that can produce a toxin, especially in foods that are cooled slowly. Because this toxin is heat-resistant, it's not destroyed by reheating to any temperature.
The food poisoning bacteria that produce a heat-stable toxin are Staphylococcus aureus. This bacterium can contaminate food and, when ingested, its toxin can cause gastrointestinal symptoms. Even thorough cooking may not eliminate the toxin, making it particularly dangerous in improperly stored or handled foods. Common sources include dairy products, meats, and salads that have been left out at room temperature.
Clostridium botulinum is commonly found in soil and aquatic environments. It can also be present in improperly processed canned foods, particularly low-acid foods with anaerobic conditions that allow the bacteria to grow and produce deadly botulinum toxin.
Unless you have a precise temperature history of the thawed swordfish, refreezing it would not be recommended. The vacuum packaging could promote the growth of C. boutlinum along with the formation of the toxin if it got above 38 degrees F. Swordfish can also produce histamines when temperature-abused which could result in Scombroid poisoning.
The botulinum toxin is formed when the bacteria, Clostridium botulinum, grows under anaerobic conditions. Improperly processed canned foods provide the ideal conditions for this kind of food poisoning. Canning will kill off vegetative cells, but C. bot. also produces a protected cell - called a spore - that can survive standard heat treatment.Botulism toxin has been found in the middle of improperly processed sausages, in packages of fresh mushrooms (that is why you see the hole punched in the overwrap) and in sealed packages of shredded cabbage. A often-cited outbreak occurred when grilled onions were covered with oil and placed near the grill. The oil provided the anaerobic environment. The onions provided the spore form of the bacteria, which germinated in the warm environment and produced the toxin. C. Bot. is also the reason you don't give honey to babies. Their digestive system is not mature enough and does not have the acid levels of adults. The bacterial spores germinate, grow and produce the toxin, resulting in illness or even death.
Botulism got its name from the Latin word "botulus," meaning sausage. The term was coined in the 18th century when the disease was linked to improperly processed or spoiled sausages. Early studies revealed that the toxin responsible for botulism was often found in these contaminated foods, leading to the association with the name.
Botulism is caused by a toxin produced by the bacterium Clostridium botulinum. The toxin can be destroyed by heating food to a temperature of 85°C (185°F) for at least 5 minutes. Proper canning techniques, including pressure canning for low-acid foods, also help eliminate the bacteria and its spores. Additionally, acidic environments, such as vinegar or lemon juice, can inhibit the growth of C. botulinum.
It is a biomicrobial toxin.
No, it is not a toxin.
1.some bacteria cause diseases to human.Example is Salmonella typh i(typhoid fever) .2.The toxins of many pathogenic bacteria that are transmitted in foods can cause food poisoning when ingested. These include a toxin produced by Staphylococcus aureus, which causes a rapid, severe, but limited gastrointestinal distress, or the toxin of Clostridium botulinum, which is often lethal. Production of botulism toxin can occur in canned nonacidic foods that have been incompletely cooked before sealing.3.
The botulinum toxin is formed when the bacteria, Clostridium botulinum, grows under anaerobic conditions. Improperly processed canned foods provide the ideal conditions for this kind of food poisoning. Canning will kill off vegetative cells, but C. bot. also produces a protected cell - called a spore - that can survive standard heat treatment.Botulism toxin has been found in the middle of improperly processed sausages, in packages of fresh mushrooms (that is why you see the hole punched in the overwrap) and in sealed packages of shredded cabbage. A often-cited outbreak occurred when grilled onions were covered with oil and placed near the grill. The oil provided the anaerobic environment. The onions provided the spore form of the bacteria, which germinated in the warm environment and produced the toxin. C. Bot. is also the reason you don't give honey to babies. Their digestive system is not mature enough and does not have the acid levels of adults. The bacterial spores germinate, grow and produce the toxin, resulting in illness or even death.
Botulism is nothing but which can be defined as food poison caused by bacterias which are all growing on improperly sterilized tinned meats and other preserved foods.