Juglone is a naphthoquinone naturally present in black walnut (Juglans nigra) and other species of the genus Juglans . It is recognized for its antifungal, antimicrobial, insecticidal and allelopathic properties, which make it an active ingredient of interest for the nutraceutical, phytosanitary and natural cosmetic sectors.
Juglone dosage is essential for:
- Control the active ingredient content in standardized extracts
- Check the quality of botanical ingredients
- Evaluating functional efficacy in natural formulations
- Responding to regulatory constraints on bioactive substances
- Safe use of walnut products or extracts containing juglone
Available analytical methods
- HPLC-DAD: quantitative assay with UV detection, suitable for simple or enriched matrices
- LC-MS/MS: specific quantification at trace levels in complex matrices (plant powders, aqueous or hydroalcoholic extracts)
These methods allow precise identification and quantification, even at low concentrations, with a high level of reproducibility.
Commonly analyzed matrices
- Extracts of walnut leaves or shells
- Medicinal plant powders
- Active ingredients for herbal medicine
- Technical products or natural formulations
- Food supplements or phytosanitary solutions
Industrial applications of juglone dosage
- Quality control of walnut products
- Formulation of natural fungicidal solutions
- Standardization of botanical extracts for antifungal purposes
- Development of plant-based anti-parasite products
- Toxicity or biological efficacy studies in the context of R&D
Why choose YesWeLab?
YesWeLab gives you access to an expert network of partner laboratories mastering HPLC and LC-MS/MS techniques for the determination of juglone and naphthoquinones. All laboratories are selected based on their level of accreditation (ISO 17025, COFRAC, etc.), their technical know-how, and their responsiveness.
Our digital platform allows you to:
- Easily submit your samples
- Benefit from personalized scientific support
- Obtain reliable, documented and standards-compliant results
Recommended internal links
To complete your analytical approach, also consult:
- Total flavonoids assay : useful for characterizing plant extracts
- Quercetin dosage : flavonol frequently associated with the antioxidant effects of extracts
Need a quote or advice on your analytical project?
Our scientific team is available to help you define the analysis protocol best suited to your matrix, your objectives, and your regulatory requirements.
