How do chemical modifications of starch alter its interaction with iodine and the resulting color?

In the presence of iodide, iodine reacts to form triiodide (I3 ... When the triiodide color starts to fade, add 5 mL of starch solution and continue. The solution will turn a dark purple. This will show that iodine, when in the presence of starch, turns purple, the basis of the other two experiments. Dec 16, 2022 ... Indeed, I2 has been shown to efficiently bind to amylose in a dry/solid state, but much less so in solution (unless special conditions, e.g., ... which, in the presence of starch, made the solution cloudy. Although this did not change the colour reac- tion, the perceived colour changed, making it ... As it is heated in the presence of reducing sugars, it turns yellow to orange. ... As starch is a polysaccharide, it is unsurprising that the starch solution ... Other foods—such as peppers, cucumbers, and strawberries—are non-starchy foods, and the iodine solution should not have changed color when you added it to these ... ... iodine solution. The starch reacts with the iodine solution to produce a blue-black colour in a pattern characteristic for that cultivar. Where there is no ... It is based on the reaction between iodine and starch to produce a blue-black colour. ... iodine solution. If starch is present, the mixture will ... ... starch) was the yellow colour of the iodine solution. Iodine and Benedict's ... A blue-black colour change (a positive result) suggests the presence of starch. ... presence of starch is not detected, the foods tested for take on the colour of the iodine solution. What colour would the apple become? | TeachSA. TeachSA.