Food tests

Descrição

AS Biology (Food Tests) Mapa Mental sobre Food tests, criado por jesslawrence19 em 02-04-2014.
jesslawrence19
Mapa Mental por jesslawrence19, atualizado more than 1 year ago
jesslawrence19
Criado por jesslawrence19 mais de 10 anos atrás
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Resumo de Recurso

Food tests
  1. Protein
    1. Biurets solution
      1. If protein is present it will turn from pale blue to lilac
      2. Reducing sugar
        1. Benedict's Solution
          1. Add Benedict's, heat to 80˚C. If reducing sugar present, from blue to brick red/orange-red
          2. Starch
            1. Iodine solution
              1. If present it will turn from yellow to blue-black
              2. Lipids
                1. Emulsion test
                  1. Mix in ethanol. Pour into water. If an emulsion forms a lipid is present
                  2. Non-reducing sugar
                    1. Benedict's solution
                      1. If reducing sugar test is negative, boil with hydrochloric acid, cool and neutralise with sodium hydrogencarbonate. Repeat Benedict's test.
                      2. Measuring concentration of glucose in a solution using COLORIMETRY

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