Biology Food Test Procedures

Prepare a food sample for testing and apply the basic safety precautions required when heating or handling food-test reagents.

Write the KCSE starch-test procedure, naming iodine solution and distinguishing its initial colour from the positive result.

Write the KCSE reducing-sugar test procedure, including Benedict’s solution, heating, expected colour changes, and the correct conclusion.

Write the KCSE non-reducing-sugar test procedure, including preliminary testing, acid hydrolysis, neutralisation, retesting, observation, and conclusion.

Write the KCSE protein-test procedure, naming the Biuret-test reactants and linking the observed colour to the correct conclusion.

Write the KCSE lipid-test procedure using the ethanol-emulsion method and interpret the resulting observation.

Write the KCSE vitamin C test procedure using DCPIP, including the reagent’s starting colour, expected observation, and conclusion.

Construct an exam-ready comparison table showing the reactants, initial colours, procedures, positive observations, and conclusions for all the covered food tests.