Find out a qualitative test for proteins,fats | vedclass

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(N/A) Test for proteinBiuret's test - If Biuret's reagent is added to protein,then the colour of the reagent changes from light blue to purple.$(b)$ T

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(N/A) Test for proteinBiuret's test - If Biuret's reagent is added to protein,then the colour of the reagent changes from light blue to purple.$(b)$ Test for fats and oilsGrease or solubility test.$(c)$ Test for amino acidNinhydrin test - If Ninhydrin reagent is added to the solution,then the colourless solution changes to pink,blue,or purple,depending on the amino acid.Item and TestProcedure and Result$(1)$ Fruit juice (Biuret/Grease/Ninhydrin)Biuret: Purple color (Protein present); Grease: No spot (Fats absent); Ninhydrin: Color change (Amino acids present).$(2)$ Saliva (Biuret/Grease/Ninhydrin)Biuret: Purple color (Protein present); Grease: No spot (Fats absent); Ninhydrin: Color change (Amino acids present).$(3)$ Sweat (Biuret/Solubility/Ninhydrin)Biuret: No change (Protein absent); Solubility: Oily appearance (Fats present); Ninhydrin: No change (Amino acids absent).$(4)$ Urine (Biuret/Solubility/Ninhydrin)Biuret: Purple color (Protein present); Solubility: Oily appearance (Fats present); Ninhydrin: Color change (Amino acids present).

Find out a qualitative test for proteins,fats and oils,amino acids and test any fruit juice,saliva,sweat and urine for them.

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Item and Test	Procedure and Result
$(1)$ Fruit juice (Biuret/Grease/Ninhydrin)	Biuret: Purple color (Protein present); Grease: No spot (Fats absent); Ninhydrin: Color change (Amino acids present).
$(2)$ Saliva (Biuret/Grease/Ninhydrin)	Biuret: Purple color (Protein present); Grease: No spot (Fats absent); Ninhydrin: Color change (Amino acids present).
$(3)$ Sweat (Biuret/Solubility/Ninhydrin)	Biuret: No change (Protein absent); Solubility: Oily appearance (Fats present); Ninhydrin: No change (Amino acids absent).
$(4)$ Urine (Biuret/Solubility/Ninhydrin)	Biuret: Purple color (Protein present); Solubility: Oily appearance (Fats present); Ninhydrin: Color change (Amino acids present).