pH is a measure of acidity or basicity of a solution, and is not an actor capable of verbing things. A bacterial cell living in an environment with too much acid or too much base (relative to what it is set up for) will tend not to do well and perhaps die, depending on how its membranes are set up. Acidophiles like and do well in low pH environments, and v.v.
Yes, lower pH can be used as a barrier for bacteria (eg. stomach).
However, there are some bacteria which can still survive in low pH eg. Helicobacter pylori.
to some bacteria such a pH level is hostile - to others they thrive in it.
disruption of the bacteria's cytoplasmic membrane
Most bacteria prefer neutral pH (6.5-7.5). some are Acid loving (Grow at very low pH (0.1 to 5.4)) and others Alkali loving (Vibrio cholerae and Alkaligenes faecalis optimal pH 9)
Traditional mouthwash formulations use alcohol to kill bacteria in order to control halitos. Although Dentyl pH contains an antibacterial agent (cetylpyridinium chloride triclosan), it also contails an oil (isopropyl myristate) in order to remove bacteria from the mouth. Dentyl pH consists of two separate coloured phases: a water-based phase which contains the cetylpyridinium chloride (CPC) and an oil based solution with natural essential oils. the mouthwash is shaken before use to create a temporary mix of the two. This mixture is clinically proven to lift debris and bacteria from the mouth and kill up to 99% of oral bacteria.
if there is too much pH in a liquid then it can kill you
Yes. It makes sense that disinfectants are slightly acidic (pH3 -5). Bacteria and fungi are more susceptible to being killed at slightly acidic pH values. Fungi in particular are harder to kill so pH is particularly important.
no it raises the pH
the ph of the stain on the bacteria caused by methylene blue would not affect it a lot since all methylene blue is supposed to do is make it visible on the microscope for e.g.
it increases the level of pH and damages bacteria
yeah, creating a high pH environment (pH>13), caustic kills almost all bacteria.
Most bacteria as well as our cells work best at certain pH levels. Lemon juice has a pH of around 2. Our body has a pH around 7.4. Most bacteria prefer a pH of 7.
A large portion of bacteria, though not all, can not survive in a low pH environment such as stomach acid. The bacteria dies from the corresive nature of low a low pH solution.
Yes. The lower the pH, the fewer bacteria that can live in the water. That is also how soft drinks work. Unlike milk, a bottle of pop does not go bad in your refrigerator. That bottle is filled with a weak acid. Occasionally, it will get mold on top, but it never gets bacteria. Occasionally people's ears get mold from swimming pools. Mold can live at a lower pH than bacteria. Thus, people should dry out their ears after swimming. Chlorine also produces monatomic oxygen. That also kills bacteria. A lower pH can hurt someone's eyes. Ozone can also kill bacteria. Ozone in air will kill people long before it kills bacteria. In water, it will kill bacteria. When the ozone is dissolved in water, it kills bacteria. It would kill people long before it killed bacteria except that people do not breathe water. It stays in the water and does not get into the air.
Bacteria in milk causes milk to sour by changing lactose to lactic acid. This causes the pH to drop and once the pH drops low enough, the proteins in the milk will curdle.
tears are 5.0 blood is 7.4 but the both can kill bacteria. with the acid in them.
Bacterial Vaginosis and yeast infections often go hand-in hand, it's very common to have both infections at once. Your vagina is acidic to kill 'bad' bacteria and help the 'good' bacteria (such as the bacteria that help keep yeast under control) thrive, if your vaginal pH is off-balance it's normal to develop overgrowth of 'bad' bacteria and as the 'good' bacteria is reduced yeast is also allowed to thrive.
Ph of distilled water should be 7.But due to the presence of chlorine & alumina in trace amounts to kill the bacteria the pH shifts. We know hydrochloric acid is stronger than aluminum hydroxide thus the pH is 6.
Lemon juice can inhibit some bacteria if they are sensitive to lower (acidic) pH. As lemon juice is an acid. But there are very high numbers of bacteria in lemon wedges when tested. See link below:
You should never do anything to severely offset the PH balance of a septic tank. Septic tanks use natural bacteria to break down waste solids, and an unnatural PH (acidity for instance) may kill this bacteria.
Your vagina is supposed to contain bacteria as certain strains of bacteria help to protect the vagina from infection. The vagina is a self-cleaning organ, it has discharge to flush out harmful bacteria and also an acidic pH helps to maintain healthy bacteria within the vagina. As long as you're healthy you don't need to do anything to get bacteria out of your vagina, although if you have a bacterial vaginal infection like Bacterial Vaginosis you need to take antibiotics to kill excess of harmful bacteria.