The Sunlight Experiment

Compound Monograph

Juglone

Phenolics Quinones

A yellow-brown naphthoquinone pigment from walnut (Juglans) leaves, husks, and roots. It is allelopathic — inhibiting nearby plants — and has antimicrobial and antifungal activity; it is also a skin and tissue irritant.

Sources · 3

Where Does It Come From?

Juglone is one of the quinones, found in Black Walnut, English walnut and Pecan. It is flagged as moderately toxic.

Source Black Walnut Juglans nigra Herb monograph →
Also found in
English walnut Monograph coming soon
Pecan Monograph coming soon

Concentration

Content by Source

Concentrations not reported. No percent-dry-weight or mg/g figures have been published for this compound in its source plants.

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