This means it is heated to a high temperature to kill off any harmful bacteria.
But he says they are less useful for vegetables, which often carry less harmful bacteria.
Under normal circumstances, the plaque that grows on teeth contains a mix of good and harmful bacteria.
According to the Natural Resources Defense Council, 75% of beach closings are due to high levels of harmful bacteria.
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Acidophilus kills the harmful bacteria strain of E. coli in the intestinal tract.
In cats, it increased the ability of specialised cells to engulf harmful bacteria, and in chickens, antibody responses were increased.
Dr Hoyle says that one of the advantages of the viruses over antibiotics is that they target only the harmful bacteria.
Ribosomes are a key target for antibiotics, as antibiotics are able to attack the ribosomal activity of harmful bacteria while leaving human ribosomes untouched.
With an optional anti-microbial keyboard for protecting against harmful bacteria, the notebook trio is ideal for deploying in shared environments such as schools, reception desks, and libraries.
Researchers now want to look at how coconut oil interacts with Streptococcus bacteria at the molecular level and which other strains of harmful bacteria it can inhibit.
However, harmful bacteria tend to thrive in the acidic environment that is created when we eat sugary foods to the detriment of beneficial bacteria, which increases the risk of tooth decay.
Sold at high-end U.S. stores like Whole Foods, it comes in flavors like Sublime Slime Lime and contains a hefty dose of 7 billion to 10 billion good bacteria that "inhibit the growth of harmful bacteria" in the gut, according to Lifeway's website.
Dr Glenn Gibson, a food researcher at the University of Reading, is developing strains of Bifidobacterium bifidum which combat harmful gut bacteria.
Doctors warn that they can carry salmonella bacteria harmful to humans.
The lactic and acetic acids these bacteria produce help to keep harmful bugs at bay.
That is important, because not all bacteria that live in people are harmful.
However, Dr Geoff Craig, chairman of the BDA's health and science committee, dismissed fears that the bacteria in drinking unit waterlines are harmful.
They may even use harmless bacteria as a transport link to arm other harmful bugs that pass by.
Professor Philip Marsh, of the Centre for Applied Microbiology and Research, Salisbury, said it should be possible to control the environment in the mouth more effectively to stop the good bacteria being killed off, and to modify the conditions that favour the growth of the harmful organisms.
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