Year 8 Digestion of Starch Practical

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Presentation transcript:

Year 8 Digestion of Starch Practical

Digestion of Starch using Amylase Iodine turns black Iodine stays brown Learning objective: To determine the effect of temperature on the digestion of starch

Digestion of Starch using Amylase Four groups Groups 1 & 3 at room temperature Groups 2 & 4 at body temperature Starch turns iodine black! 2 drops of iodine Groups 2 and 4 Groups 1 and 3 5ml starch suspension 0.5ml amylase Placed in hand 5ml starch suspension 0.5ml amylase Placed in beaker

Results Time Colour of iodine at room temperature (beaker) Colour of iodine at body temperature (hand) 1 Black 2 3 4 5 6 Brown 7 8 9 10 11 12