Grindelic acid assay

Grindelic acid is a natural compound specific to plants of the genus Grindelia , traditionally used in herbal medicine for their expectorant and respiratory soothing properties. Found primarily in the flowering tops, it is included in preparations intended to relieve coughs, bronchial congestion, or inflammatory conditions of the mucous membranes.

The dosage of grindelic acid is an essential parameter for guaranteeing the quality, efficacy, and conformity of extracts used in nutraceutical products or herbal syrups. It ensures reliable standardization of formulations, a key element for manufacturers concerned with the reproducibility and traceability of their finished products.

Analytical methods used

Grindelic acid analysis is generally performed by liquid chromatography, depending on the sensitivity requirements and the complexity of the matrix:

• HPLC-DAD (High Performance Liquid Chromatography – Diode Array Detector): a reference method for separating and detecting phenolic compounds, triterpenic acids, and other plant metabolites. It is suitable for hydroalcoholic extracts, tinctures, or syrups based on Grindelia .
• LC-MS (Liquid Chromatography coupled with mass spectrometry): allows lower detection limits to be reached and the structural identity of grindelic acid to be confirmed in complex matrices.

These methods are implemented in specialized laboratories, equipped for the processing of natural or processed samples according to current standards (ISO 17025, COFRAC, etc.).

Matrices involved

The dosage of grindelic acid applies to different types of products, at various stages of formulation:

• Dry extracts of Grindelia : used as active ingredients in food supplements or capsules
• Mother tinctures: traditional forms used in herbal medicine
• Medicinal syrups: for adults or children, with expectorant or decongestant properties
• Compounded or galenic preparations: within a pharmaceutical framework or as custom formulations

The presence and concentration of grindelic acid may be required in the specifications of manufacturing laboratories, particularly to validate the conformity of batches or to optimize the claimed therapeutic effects.

Additional analyses are available from YesWeLab

YesWeLab offers a wide range of complementary analyses for plant extracts and plant-based formulations, enabling in-depth characterization of active ingredients, contaminants, and overall quality:

• Total or specific flavonoid assays
  → Ex.: vitexin , wogonin , luteolin , quercetin.
  These analyses are useful for characterizing the antioxidant and anti-inflammatory effects of extracts associated with Grindelia .
• rosmarinic acid or caffeic acid
  → Compounds sometimes present in synergy in complex extracts for pulmonary purposes.

These additional analytical services allow manufacturers to secure their formulations, enhance the value of their active ingredients and meet national or European regulatory requirements (e.g. Novel Food, food supplements, pharmacopoeia…).

Why choose YesWeLab for this analysis?

By entrusting the dosing of your extracts to YesWeLab, you benefit from:

• From a network of specialized laboratories, ISO 17025 certified and COFRAC accredited according to the analyses
• An intuitive digital platform to centralize your requests, quotes and results
• Personalized scientific support to adapt the methods to your specifications
• With quick access to over 300 analyses dedicated to plant extracts, nutraceutical products and natural cosmetics

Need to measure grindelic acid in your extracts or finished products?
Contact our team for a customized quote or submit your request via our platform.