preservation of disperse system

Question 1

process that kills or removes all microbial contaminants, including bacterial and fungal spores.

Answer 1

Sterilization

Question 2

a process that kills or removes all vegetative microbial contaminants (i.e., it does not destroy bacterial or fungal spores). Disinfection generally is quick, requiring only about 10-15 min contact with the appropriate agent ​

Answer 2

Disinfection

Question 3

prevents or inhibits microbial growth in the formulation to which it is added

Answer 3

Preservation

Question 4

microbial load or insult presented to a sample, formulation, or other potential home for microbes.

Answer 4

Bioburden

Question 5

used in most ophthalmic, nasal, and otic formulation

Answer 5

Benzalkonium Chloride​

Question 6

most commonly used preservatives for cosmetics

Answer 6

parabens

Question 7

Alcohol as a preservative:

Select one or more:

The activity decreases with branching of the chain.

Benzyl alcohol reacts with plastic packaging.

It exerts denaturing of microbial protein.

It disorganizes lipid membrane.

Chlorbutanol is used at concentration of 20%.

Answer 7

Benzyl alcohol reacts with plastic packaging.

It exerts denaturing of microbial protein.

It disorganizes lipid membrane.