What Are Oxalates

What Are Oxalates

Oxalates are acids found in nature, usually in plants and nuts and seeds.  Oxalate-rich plants include fat hen, sorrel, and several Oxalis species. The root and/or leaves of rhubarb and buckwheat are high in oxalic acid.

Other edible plants that contain significant concentrations of oxalate include, in decreasing order…

  • Star Fruit
  • Black pepper
  • Parsley
  • Poppy seed
  • Amaranth
  • Spinach
  • Chard
  • Beets
  • Cocoa
  • Chocolate
  • Nuts
  • Berries
  • Fishtail palms
  • New Zealand spinach
  • Beans
  • Leaves of the tea plant

…contain among the greatest measured concentrations of oxalic acid relative to other plants.


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