AS Biology (Biochemistry Tests)

Reducing sugar test (glucose, maltose)

• Add benedicts solution (turns solution blue)
• Heat till boiling
• Copper is given out (turns solution orange)

Non Reducing sugar test (sucrose)

• Add hydrochloric acid to split sugar into monomers
• Heat
• Add sodium hydrogen carbonate to neutralise acid 
• (Repeat reducing sugar test)

For all types of proteins

• Add biurette solution (turning solution blue)
• Add sodium hydroxide powder
• Add few drops of dilute copper sulphate
• Shake well
• Solution will turn purple