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1.5 Procedures 1.5.1 Determining the pH of a Solid Food [5]

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1 Cut a fresh tomato into small cubes and blend in a blender until a uniform slurry is formed, measure the temperature of the slurry.

2 Calibrate your pH meter.

3 Measure the pH of the slurry.

4 Centrifuge an aliquot of the slurry for 10 minutes at maximum speed.

5 Measure the pH of the supernatant.

6 Repeat Steps 1 through 5 using canned tomatoes.

Food Chemistry

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