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In microencapsulation which of the coating materials is not used for coating:

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In microencapsulation which of the coating materials is not used for coating:

(a) Sodium alginate

(b) Sodium chloride

(c) Gelatin

(d) Polyvinyl alcohol

This question was posed to me during an online interview.

The above asked question is from Bioreactor Considerations topic in division Bioprocess Considerations in Using Animal Cell Cultures of Bioprocess Engineering

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Correct option is (b) Sodium chloride

To elaborate: The coating materials generally used for coating are:

▪ Ethyl cellulose

▪ Polyvinyl alcohol

▪ Gelatin

▪ Sodium alginate

The definition has been expanded, and includes most foods, where the encapsulation of flavors is the most common. The technique of microencapsulation depends on the physical and chemical properties of the material to be encapsulated.

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