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Juglone, also called 5-hydroxy-1,4-naphthalenedione is a phenolic organic compound with the molecular formula C 10 H 6 O 3. In the food industry, juglone is also known as C.I. Natural Brown 7 and C.I. 75500 .
[23] [24] However, different walnut species vary in the amount of juglone they release from the roots and fallen leaves - J. nigra, in particular, is known for its toxicity, both to plants and horses. [25] Juglone is toxic to plants such as tomato, apple, and birch, and may cause stunting and death of nearby vegetation. Juglone appears to be ...
Juglone is poorly soluble in water and does not move far in the soil and will stay most concentrated in the soil directly beneath the tree. [20] Even after a tree is removed the soil where the roots once were will still contain juglone for several years after the tree is removed as more juglone will be released as the roots decay. [20]
The veterinary community is still not quite sure which compound is the culprit. Food containing the compound juglone, including walnuts and pecans, also causes digestive distress.
The black walnut (Juglans nigra) produces the allelochemical juglone, which affects some species greatly while others not at all. However, most of the evidence for allelopathic effects of juglone come from laboratory assays and it thus remains controversial to what extent juglone affects the growth of competitors under field conditions. [28]
Plumbagin or 5-hydroxy-2-methyl-1,4-naphthoquinone is an organic compound with the chemical formula C 11 H 8 O 3.It is regarded as a toxin [1] and it is genotoxic [2] and mutagenic. [3]
These applications include purgative , antimicrobial and antiparasitic (rhein and saprorthoquinone, atovaquone), anti-tumor (emodin and juglone), inhibition of PGE2 biosynthesis (arnebinone and arnebifuranone) and anti-cardiovascular disease . [16] Malbranchea cinnamomea is a thermophilic fungus, which produces a quinone antibiotic
Chemical structure of juglone, a compound produced by black walnut trees. Alkannin; Hexahydroxy-1,4-naphthalenedione; Juglone; Lapachol; Lawsone; Menatetrenone; 2-Methoxy-1,4-naphthoquinone, a compound found in Impatiens species; Nigrosporin B; Phylloquinone; Plumbagin; Spinochrome B; Spinochrome D; Vitamin K and related compounds Phylloquinone ...