Well in the simplest way I can put it is the bacterium and fungi are "eating" the food the waste they produce is toxic.
However! many bacterium and fungi produce byproducts that are nontoxic or beneficial if altered or at a low dose e.g. botox cosmetics' mains ingredient is actually just a VERY small dose of Botulinum Toxin Type A one of the most deadly toxins known, and penicillin is produced by a fungus. All milk products (besides milk) like cheese and yogurt use bacterial enzymes too.
bad bacteria
Some do.
The bacteria and fungi in the food are killed by the heat and can therefore no longer spoil the food.
There are a wide variety of microorganisms harmful to food, or causing food to spoil or become contaminated. Most are bacteria and fungi (which include molds and yeasts). There are also a few other types of microorganisms which are neither bacteria nor fungi, which cause food-borne illness, but these are less common. Most of the problem is caused by bacteria, and then fungi...and there are too many to list here or name explicitly.
Food spoilage happens when bacteria in the food is allowed to grow. The food heats up to room temperature or hotter and the bacteria grow allowing it to spoil.
idk
Food will decay if bacteria or fungi is on the food because fungi and bacteria are living organisms so they eat at the flesh of the food which cause the fungi to spread or cause the bacteria to multiply which eventually will cause the food to eventually be 100% decomposed.
Various types of bacteria can cause food to spoil, including species like Salmonella, E. coli, and Listeria. These bacteria can multiply rapidly in certain conditions, such as when food is not stored at the correct temperature or is exposed to unclean environments. Their presence can lead to food spoilage and make it unsafe for consumption.
Common spoilage microbes include bacteria like Pseudomonas, Lactobacillus, and Bacillus, as well as molds like Aspergillus and Penicillium, and yeasts like Saccharomyces and Candida. These microbes can cause food to spoil by breaking down nutrients, producing off-flavors and odors, and causing texture changes.
because they spoil food
Pasteurisation kills many of the bacteria that would otherwise cause food to spoil, and could cause food poisoning in those who ate it.
Pasteurisation kills many of the bacteria that would otherwise cause food to spoil, and could cause food poisoning in those who ate it.