ISO 21316:2026 PDF

Overview

ISO 21316:2026 - Traditional Chinese medicine - Isatis indigotica root establishes international requirements and test methods for Isatis indigotica root, a key herbal ingredient in traditional Chinese medicine (TCM). The standard applies to roots derived from Isatis indigotica Fort. (commonly known as Banlangen) that are sold both as whole medicinal raw materials and as decoction pieces. By specifying clear quality criteria, sampling methods, and safety guidelines, this ISO standard aims to support consistency, efficacy, and safety in the global trade and application of Isatis indigotica root.

Key Topics

• Material Requirements:

  • Only clean, whole roots with no leaves, stems, or foreign matter are permitted.
  • Strict exclusion of visible external contaminants, insects, or mould.
  • Roots must exhibit specific morphological characteristics, such as color, size, texture, and odour criteria.

• Chemical and Physical Testing:

  • Measurement of moisture content, total ash, acid-insoluble ash, and ethanol-soluble extractives.
  • Verification of marker compound, such as (R,S)-goitrin, using thin-layer chromatogram (TLC) and high-performance liquid chromatography (HPLC).
  • Determination of heavy metals (arsenic, mercury, lead, cadmium) and pesticide residues (e.g., DDT, BHC).

• Sampling and Test Methods:

  • Defined procedures for how to collect representative samples from different batch sizes.
  • Verification by both macroscopic and microscopic examination methods.
  • Detailed instructions for laboratory methods, including sample preparation and appropriate analytical procedures.

• Packaging, Storage, and Labelling:

  • Requirements to prevent contamination, exposure to moisture, and preserve product quality during storage and transport.
  • Clear and accurate labelling in compliance with ISO 21371, detailing quality parameters, origin, production and expiry dates, and storage instructions.

Applications

ISO 21316:2026 is highly relevant for stakeholders in the supply chain of traditional Chinese medicine, including:

• Manufacturers and Traders: Ensures compliance with recognized international quality standards, reducing the risk of rejection in domestic or export markets.

• Pharmacists and Healthcare Providers: Facilitates the sourcing of high-quality, standardized Banlangen root for use in clinical preparations and prescriptions.

• Regulatory Authorities: Provides a harmonized benchmark for the inspection, quality assessment, and approval of Isatis indigotica products in markets worldwide.

• Testing Laboratories: Offers standardized protocols for quality assessment, supporting consistent and reliable results across regions.

By implementing ISO 21316:2026, entities help reduce risks of adulteration, support patient safety, and foster the global credibility of TCM herbal products.

Related Standards

• ISO 18664: Determination of heavy metals in herbal medicines used in Traditional Chinese Medicine.
• ISO/TS 21310: Microscopic examination of medicinal herbs.
• ISO 21371: Labelling requirements for products intended for oral or topical use.
• ISO 22217: Storage requirements for raw materials and decoction pieces.
• ISO 22258: Determination of pesticide residues in natural products by gas chromatography.
• ISO 23723:2021: General requirements for herbal raw material and materia medica.

Together, these standards form a comprehensive framework for ensuring the quality, safety, and traceability of herbal medicine materials, supporting both regulatory compliance and international trade of Isatis indigotica root.

Keywords: Isatis indigotica root, Banlangen, traditional Chinese medicine standard, ISO 21316, herbal medicine quality requirements, TCM test methods, Isatis indigotica safety, decoction pieces, marker compound (R,S)-goitrin, herbal product labelling, heavy metal testing, pesticide residue limits.