Overview
ISO 24902:2026 – Traditional Chinese medicine - Zanthoxylum nitidum root establishes the minimum quality requirements and test methods for Zanthoxylum nitidum root. This standard applies to the root as sold and used in Chinese materia medica, encompassing both whole medicinal materials and decoction pieces. Zanthoxylum nitidum root, commonly known as Liang-Mian-Zhen, is widely used in traditional Chinese medicine across numerous countries for its therapeutic properties. Ensuring consistent quality and safety through standardized guidelines is vital for both consumer safety and the promotion of international trade.
Key Topics
- General Quality Requirements: Zanthoxylum nitidum root must be free of foreign matter, living insects, mold, and visible contaminants.
- Morphological and Microscopic Identification: The root is characterized by its thick, pale brownish-yellow slices or cylindrical sections with unique internal structures distinguishable under microscopic examination.
- Chemical Testing and Identification:
- Thin-Layer Chromatography (TLC): Used for accurate identification and adulterant detection.
- Determination of Marker Compounds: Analysis of specific alkaloids, particularly nitidine chloride.
- Moisture and Total Ash Content: Limitations ensure product integrity.
- Ethanol-Soluble Extractives: Assurance of key component concentration.
- Safety Controls:
- Heavy Metal and Pesticide Residue Testing: Limits set for contaminants such as lead, mercury, arsenic, and common pesticide residues.
- Sampling and Test Methods: Detailed protocols based on related ISO standards ensure reliability and reproducibility.
- Packaging, Storage, and Labelling: Requirements to minimize contamination, degradation, and misidentification.
Applications
Zanthoxylum nitidum root is used widely in traditional Chinese medicine for treating a variety of conditions such as stomachache, toothache, rheumatic complaints, injuries, and snake bites. Beyond its medicinal uses, standardization of Zanthoxylum nitidum root benefits:
- Herbal Medicine Manufacturers: Supports quality control in production and ensures compliance with international best practices.
- Healthcare Practitioners: Helps in sourcing authentic and standardized herbal materials for clinical application.
- Regulatory Authorities: Provides a scientific basis for market surveillance, import/export controls, and consumer safety assurance.
- Research Institutions: Facilitates the study of pharmacological effects, toxicity, and safe use of traditional Chinese medicine materials.
- International Trade: Supports harmonized quality criteria for raw materials, facilitating smoother trade and mutual recognition across countries.
Related Standards
ISO 24902:2026 references and complements several key standards in the field of medicinal plant quality assurance:
- ISO 18664 – Determination of heavy metals in herbal medicines
- ISO/TS 21310 – Microscopic examination of medicinal herbs
- ISO 21371 – Labelling requirements for oral or topical use herbal products
- ISO 22217:2020 – Storage requirements for raw materials and decoction pieces
- ISO 22258 – Determination of pesticide residues in natural products
- ISO 23723:2021 – General requirements for herbal raw material and materia medica
By aligning with these standards, ISO 24902:2026 ensures a comprehensive framework for the quality and safety management of Zanthoxylum nitidum root in traditional Chinese medicine.
Keywords: ISO 24902:2026, Zanthoxylum nitidum root, Traditional Chinese medicine, quality requirements, test methods, herbal medicine, materia medica, safety, identification, herbal quality control, pharmacopoeia, international trade in medicinal plants.