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n.1.(Chem.) A yellow crystalline substance (C10H6O3) resembling quinone, extracted from green shucks of the walnut (Juglans regia); - called also nucin. Chemically, it is 5-hydroxy-1,4-naphthalenedione.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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Mattay, Green photochemistry: solar-chemical synthesis of Juglone with medium concentrated sunlight, Green Chem.., 8, 831 (2006).
Neither Clover nor the black walnut juglone could get to it.
It is not affected by the juglone produced by the roots of black walnut trees and is rarely bothered by pests or diseases.
"Their roots produce a toxic byproduct called juglone that is harmful to other plants."
This concoction also makes a decent weed killer, but do your research before applying it to your garden or adding the husks to your compost pile; walnut husks, leaves, and wood contain a chemical called "juglone" that's toxic to many garden plants.
Cheng, "Juglone prevents metabolic endotoxemia-induced hepatitis and neuroinflammation via suppressing TLR4/NF-[kappa]B signaling pathway in high-fat diet rats," Biochemical and Biophysical Research Communications, vol.
5-Hydroxy-1,4-naphthoquinone, ordinarily called juglone, has been isolated from many plants in the walnut family [1, 2].
Age-synchronized day 1 adult nematodes of the TJ356 transgenic strain stably expressing a DAF-16::GFP fusion protein as a reporter, pretreated with GNC (3.94 mg/mL) or control, were exposed to 50 [micro]M juglone for 5 min, then immobilized with azide sodium, and placed on 2% agarose pads on a glass slide.
Ethanol, 5-hydroxy-1,4-naphthoquinone (juglone) and 5-(and-6)-chloromethyl-2',7'-dichlorodihydrofluorescein diacetate (CM-[H.sub.2]DCFDA) were purchased from Sigma-Aldrich (USA).
In previous studies, we showed that TBARS increased in calf-thymus DNA treated with Q7 or juglone [39].
These unique compounds include the quinone juglone, the tannin tellimagrandin, and the flavonol morin (4)--all strong cancer inhibitors.