nutrient's

• protein is made up of amino acids
• there are 3 main tpes of nuitrents

  1. proteins
  2. carbohydrates
  3. lipids
• proteins - enzyme protease- amino acid
• lipids - enzyme lipase breaks down - glycerol and fatty acids
• starch -carbohydrase or amylase enzyme breaks down - glucose
• starch

  the test for starch is iodine .iodine is a brown liquid and if it comes into contact with starch it turns to a black/blue colour
• glucose

  the test for glucose is benedics reagent it is a blue colour and needed to be heated. if glucose is present it a range of colours to determine the concentration of glucose present
• glucose

  blue = there is no glucose present

  green= very low

  yellow= low

  orange= medium

  brick red =high
• protein

  the test for protein uses the chemical biuret it is a blue colour however if it comes into contact with protein it changes to a violet colour.