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Determine the physical characteristics and presence of any additives in the given samples of milk.
After undertaking this activity, you will be able to:
• identify the physical characteristics of milk,
• determine any additives present in milk, and
• distinguish between synthetic milk and pure milk.
Principle
The principle is discussed in sub-section 5.3.4 of this practical. We suggest you look up the sub-section once again and write the principle here in the space provided.
Materials Required
1) Sample of milk
2) Iodine solution
3) 0.01% alcoholic solution of rosalic acid
4) Resorcinol solution (0.05 g resorcinol in 100 ml of dilute HCl (1:2)
5) DAMB solution- dissolve 0.4 g of p-dimethyl amino benzaldehyde in 250 ml alcohol and add 23 ml of conc. HCl
6) pH strip prepared with phenol red
7) 95% alcohol
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