Pomegranate Peel Contains Three Times the Total Polyphenols as Pomegranate Seeds

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The pomegranate is a fruit bearing deciduous shrub or small tree in the family of Lythraceae .  It is known by its botanical name Punica granatum.

The most common part of the fruit that is used by many Asian and Middle Eastern cultures is the arials or seeds.  The white pulp is sometimes used in foods as well. 

The pomegranate arials (and the juice form the arials) are abundant in phytochemicals known as polyphenols.  These polyphenols include:  1

  • tannins called ellagitannins
  • punicalagins

The peel of the pomegranate is now being recognized to contain up to three (3) times the polyphenols as the arials.  The polyphenols of the pomegranate peel includes:  2  3

  • punicalagins
  • condensed tannins
  • catechins
  • gallocatechins
  • prodelphinidins

For a more comprehensive list of the active constituents and their biological activity of Punica peel, refer to the study:  A Review on Antihyperglycemic and Antihepatoprotective Activity of Eco-Friendly Punica granatum Peel Waste

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Figure 1:  Structures of polyphenolic compounds found in pomegranate peel (Punica granatum) (Source:  A Review on Antihyperglycemic and Antihepatoprotective Activity of Eco-Friendly Punica granatum Peel Waste)

Punicalin and punicalagin are the major constituents of pericarp ranging up to 0.2% of the total amount.   4

There is great potential in the therapeutic properties of pomegranate peel.  These therapeutic properties include:

  • Alzheimer’s disease  5 
  • anti-bacterial  6
  • anti-hyperlipidemic effects  7 
  • antioxidant  8  9  10 
  • antimicrobial  11 
  • arthritis  12 
  • cancer
    • bladder cancer  13
    • breast cancer  14
    • chronic myeloid leukemia 15
    • prostate cancer  16
  • cardiovascular disease  17
  • dental conditions  18
  • dermal wounds  19
  • diabetes  20 
  • hepatoprotective  21
  • protection from ultraviolet (UV) radiation  22

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Figure 2:  Principal therapeutic effects of pomegranate peel  (Source:  A Review on Antihyperglycemic and Antihepatoprotective Activity of Eco-Friendly Punica granatum Peel Waste)


Information References:

How to make your own pomegranate peel powder

 


Resources:

eSutras Organic Pomegranate Peel Powder