Question

State the differences between (a) Decay and putrefaction and (b) Pasteurization and sterilization of food/objects/equipment

Answer 1

(a) The terms decay and putrefaction are defined differently depending on the source of the decomposed organic matter as both refer to the breakdown of organic matter.

1. Putrefaction: It is the Start of body decomposition and skin discolouration.
2. Decomposition: In decomposition, the body decomposes naturally.

Sl. No.	Decay	Putrification
1	Bacterial breakdown of organic matter whole.	The bacterial breakdown of organic matter is incomplete.
2	It does not emit a foul odour.	It emits a foul odour.
3	The process is critical for recycling finite matter. Because it takes up physical space in the biome.	It can also be defined as the decomposition of proteins. It leads to the breakdown of tissue cohesion.

(b)

1. Pasteurisation: It is the process of heating milk to a high temperature and then cooling it to a much lower temperature.
2. Sterilisation: It is the process of removing microbes that could cause infection from any object.

Sl. No	Pasteurization	Sterilization
1	The required temperature is -60 degrees Celsius.	-110 degrees Celsius is the required temperature.
2	It has no effect on spores.	Spores can be killed.
3	Partially sterilised	Total sterilisation
4	Milk sterilisation, for example.	For example, canned food sterilisation.