a) Minerals and vitamins
b) Proteins and vitamins
c) Water and proteins
d) Proteins and carbohydrates
Answer: d
Explanation: Proteins and carbohydrates are used to make edible packaging material. The protein based material includes-gluten, zein, soy,etc. Carbohydrates based material includes-chitosan, cellulose, dextrin, pectin,etc.
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