In the class room practical to test the presence of carbohydrates in food materials, I selected peanuts. The peanuts were soaked in water for about an hour to soften them and free hand sections sliced. The sections were dipped in iodine solution for 2 minutes and excess of stain removed by gentle washing. On fixing the section on a slide and observing through the foldscope, i could see blackish starch grains indicating the presence of carbohydrates.
Dikshant (V Semester, GGDSD College, Chandigarh)