sugars test

• Reducing sugars test


  1. Add 2cm³ of food sample

  2. Add 2cm³ of Benedict's reagent

  3. Heat mixture gently in water bath for 5 mins

  4. If solution turns brick-red, reducing sugar present (positive result)
• Non-reducing sugars test


  1. Take 2cm of food sample and add 2cm of dilute hydrochloric acid

  2. Place in water bath for 5 mins

  3. Add sodium hydrogencarbonate to neutralise

  4. Do Benedict's test again

  5. If non-reducing sugar present, colour changes from blue to brick-red