â¢ Lychee average yields range from 600 pounds per acre in an âoffâ year to 10,000 pounds per acre in a heavy-bearing year (economic average is 5,000 pounds per acre). With a pack-out of 70 percent and a price of $3 per pound, income from an acre of lychee averages approximately $10,000 (3).
Generally foods contain complex mixtures of polyphenols. According to a 2005 review on polyphenols: The most important food sources are commodities widely consumed in large quantities such as fruit and vegetables, green tea, black tea, red wine, coffee, chocolate, olives, and extra virgin olive oil.
Polyphenols have recently been termed âlifespan essentialsâ, and they actively work in the body to prevent certain disease mechanisms from occurring. Polyphenols are antioxidants from plant foods that work in the body to enhance health in complex ways, and as such they are not simply antioxidants. Choose caffeinated tea and coffee, as the decaffeination process may remove polyphenols along with the caffeine. 2  Drink red wine and beer instead of other alcoholic beverages. 3  Hard liquor is distilled so essentially does not contain polyphenols.