State the differences between

(a) Decay and putrefaction.

(b) Pasteurization and sterilization.

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Solution

(a) Decay and Putrefaction

Decay Putrefaction

1. It is the complete breakdown of organic matter by bacteria. 1. It is the incomplete breakdown of organic matter by bacteria.

2. Does not emit a foul smell 2. Emits a foul smell

(b) Pasteurization and Sterilization

Pasteurization Sterilization

1. Temperature- 60°C 1. Temperature- 110°C

2. Does not kill spores 2. Kills even spores

3. Partial sterilization 3. Complete sterilization

E.g. Pasteurization of milk E.g. Sterilization of canned food

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Decay	Putrefaction
1. It is the complete breakdown of organic matter by bacteria.	1. It is the incomplete breakdown of organic matter by bacteria.
2. Does not emit a foul smell	2. Emits a foul smell

Pasteurization	Sterilization
1. Temperature- 60°C	1. Temperature- 110°C
2. Does not kill spores	2. Kills even spores
3. Partial sterilization	3. Complete sterilization
E.g. Pasteurization of milk	E.g. Sterilization of canned food