Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Phytochemicals

2,539 views

Published on

A presentation on Phytochemicals, their importance and sources

Published in: Education

Phytochemicals

  1. 1. PHYTOCHEMICALS By: Meesha Singh
  2. 2.  Phyto- Greek word for plants  Phytochemicals or Phytonutrients are the biologically active, naturally occurring substances in plants that have protective or disease preventive properties.  They act as natural defense mechanisms in their host plants. They also provide pigment to the plants.  They are nonessential nutrients, meaning that they are not required by the human body for sustaining life.  So far, scientists know of 3,000 different phytochemicals with possible health benefits.
  3. 3. Various categories of Phytochemicals
  4. 4. Tomatoes and Watermelons  Phytochemical found: Lycopene  Lycopene has been found to be 2 times as powerful as beta carotene (Vitamin A) in the destruction of free radicals.
  5. 5. Onions, Garlic, Scallions, Chives  Phytochemicals Found: Allium compounds  They help to keep healthy cells in the body from being damaged by free radicals.
  6. 6. Grapes, Strawberries, Cranberries, Nuts, Blackberries, Raspberries  Phytochemicals found: Ellagic Acid  Appears to make blood less likely to clot therefore is beneficial in preventing heart disease.
  7. 7. Citrus Fruits  Phytochemical found: monoterpenes  May help to prevent cancer.
  8. 8. GREEN TEA  Green Tea- contains high levels of flavonoids.  Shuts off the formation of cancer cells  Turns up the body’s defense system and suppresses cancer advancement.  Green Tea has also been indicated to lower LDL cholesterol and increase HDL in large quantities.
  9. 9.  Antioxidant activity: by carotenoids (fruits, carrots), flavonoids (fruits, vegetables), polyphenols (tea, grapes).  Hormonal action: by isoflavones, found in soy.  Stimulation of enzymes: by indoles, which are found in cabbages  Anti-bacterial effect: by the phytochemical allicin from garlic.
  10. 10.  Some phytochemicals have been found to lower LDL cholesterol.  Saponins found in beans interfere with the replication of cell DNA
  11. 11. Antioxidants • Antioxidants are the chemical substances that prevent or repair damage to cells caused by oxidizing effect of free radicals such as reactive oxygen, pollutants, ozone etc. • A study in 2006 by Thompson HJ showed that a botanical diversity of fruits and vegetables plays a role in the biological effect of antioxidant phytochemicals. • Free radicals- are byproducts of metabolism. They are capable of causing cells to lose their structure, function and eventually destroying them.
  12. 12. THANK YOU 

×