วันพุธที่ 21 มีนาคม พ.ศ. 2555

type of nutrients 1

 There are five types of nutrients-carbohydrates,proteins,fats,vitamins and minerals.
Carbohydrates

  • Give energy for the various body processes
  • Found in rice,bread,noodle,yam,maize,sweets
  • Excess Carbohydrates taken in can be stored as fats.
  • How to show that a food simple contains starch:
      -Add iodine solution to the food sample.If it contains starch,it will turn dark blue
  • How to show that  a food sample contains glucose:
      -Pour some Benedict's solution to the food  sample and heat it.A brick red coagulation indicates the presence of glucose

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