Question

describe the following method of food preservation

(1) pasturisation
(2) oil , vinegar and spices



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Answer 1

Answer:

1)Heating and chilling down of milk to preserve it from microorganisms

2)These preservatives prevents the food from microorganisms as they can't live in such conditions.

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Answer 2

Answer:

1.Pasteurization or pasteurisation is a process in which packaged and non-packaged foods (such as milk and fruit juice) are treated with mild heat, usually to less than 100 °C (212 °F), to eliminate pathogens and extend shelf life

2.Use of oil and vinegar prevents spoilage of pickles because bacteria cannot live in such an environment.Spices can also exert antimicrobial activity in two ways: by preventing the growth of spoilage microorganisms (food preservation), and by inhibiting/regulating the growth of those pathogenic (food safety; Tajkarimi et al., 2010).

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