History
Ellagic acid was first discovered by chemist Michel Eugène Chevreul in oak galls and was more closely examined by Henri Braconnot in 1831. Buchner was the first to show in 1845 that ellagic acid is formed when alkaline solutions of gallotannin are exposed to air. Maximilian Nierenstein prepared this substance from algarobilla and certain other fruits in 1905. He also suggested its formation from galloyl-glycine by Penicillium in 1915. Löwe was the first person to synthesize ellagic acid by heating gallic acid with arsenic acid.
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—Henry David Thoreau (1817–1862)
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