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, plant protection and natural cosmetic sectors.
The dosage of juglone is essential for:
- Controlling the active ingredient content in standardized extracts
- Check the quality of the botanical ingredients
- Evaluate functional efficacy in natural formulations
- Meeting regulatory requirements for bioactive substances
- Securing the use of walnut-based 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 for precise identification and quantification, even at low concentrations, with a high level of reproducibility.
Commonly analyzed matrices
- Extracts from walnut leaves or shells
- Medicinal plant powders
- Active ingredients for herbal medicine
- Technical products or natural formulations
- Dietary supplements or plant protection solutions
Industrial applications of juglone dosage
- Quality control of walnut-based products
- Formulation of natural fungicidal solutions
- Standardization of botanical extracts with antifungal properties
- Development of plant pest control products
- Toxicity or biological efficacy studies within the framework of R&D
Why choose YesWeLab?
YesWeLab gives you access to an expert network of partner laboratories specializing in HPLC and LC-MS/MS techniques for the analysis of juglone and naphthoquinones. All laboratories are selected based on their accreditation level (ISO 17025, COFRAC, etc.), their technical expertise, and their responsiveness.
Our digital platform allows you to:
- Easily submit your samples
- Benefit from personalized scientific support
- Obtaining reliable, documented, and standards-compliant results
Recommended internal links
To complement your analytical approach, also consult:
- Total flavonoid content : useful for characterizing plant extracts
- Quercetin dosage : a flavonol frequently associated with the antioxidant effects of extracts
Need a quote or advice on your analytical project?
Our scientific team is ready to listen to you and define the analytical protocol best suited to your matrix, your objectives and your regulatory requirements.
