Table of Contents
- 1 What does phenol coefficient indicate?
- 2 Why phenol is used as disinfectant?
- 3 What is a phenol coefficient quizlet?
- 4 What is the importance of phenol coefficient?
- 5 Is phenol A good disinfectant?
- 6 What is a phenol disinfectant?
- 7 What is the formula for calculating the phenol coefficient of an antimicrobial agent?
What does phenol coefficient indicate?
the number indicating the effectiveness of a disinfectant as a germicide relative to phenol, which is arbitrarily assigned the number 1: based on the time required to kill a given quantity of a specific type of bacteria.
Why phenol is used as disinfectant?
Phenolic compounds used as antiseptics or disinfectants include pure phenol and substitution products with halogens and alkyl groups. They act to denature and coagulate proteins and are general protoplasmic poisons. Phenol (carbolic acid) is one of the oldest antiseptic agents.
What is the mode of action of phenol as a disinfectant?
There was some correlation between phenol coefficients and inhibition of glucose and succinate metabolism. It is hypothesized that the lethal action of phenolic disinfectants is due to damage of permeability mechanisms, the repair of which is prevented by concomitant inhibition of energy-yielding metabolic reactions.
What is a phenol coefficient quizlet?
PHENOL COEFFICIENT. To compare effectiveness of PHENOLICS (phenol-like-disinfectants) with phenol itself. To calculate Phenol Coefficient. Divide Highest dilution of DISINFECTANT that killed microbe in 10 minutes over Highest Dilution of Phenol that killed the microbe in 10 minutes.
What is the importance of phenol coefficient?
Definition of Phenol Coefficient If the number is greater than 1, it means that for given dilution, the test disinfectant is more powerful and can kill germs better than phenol. If the number obtained is less than 1, it means that for the given dilution, phenol is better at controlling germs.
How do you perform a phenol coefficient test?
To calculate phenol coefficient, the concentration of phenol at which the compound kills the test organism in 10 minutes, but not in 5 minutes, is divided by the concentration of the test compound that kills the organism under the same conditions (or, probably more common, dividing the dilution factor at which the …
Is phenol A good disinfectant?
Phenol is an antiseptic and disinfectant. It is active against a wide range of micro-organisms including some fungi and viruses, but is only slowly effective against spores. Phenol is also used as an oral analgesic or anesthetic in products such as Chloraseptic to treat pharyngitis.
What is a phenol disinfectant?
Phenol is an antiseptic and disinfectant. It is active against a wide range of micro-organisms including some fungi and viruses, but is only slowly effective against spores. Phenol has been used to disinfect skin and to relieve itching.
What is the disadvantage of phenolics quizlet?
What is the disadvantage of phenolics? They do not work in the presence of organic matter. They can be irritating to the skin and mucous membranes. They only destroy the weakest vegetative pathogens.