Overview
ISO 21983:2019 provides comprehensive guidelines for the harvesting, transportation, separation of stigma, drying, and storage of saffron before packing. This international standard ensures that saffron producers and processors can maintain high product quality and safety by adopting standardized procedures from the field to post-harvest handling.
The standard focuses on preserving the key quality indicators of saffron such as flavor, color, and aroma by outlining best practices during critical stages - harvesting saffron flowers, transporting them to processing units, carefully separating the valuable stigma, optimizing drying conditions, and securely storing the dried product before packaging.
Key Topics
Harvesting Practices
- Harvest timing: Flowers are to be harvested in mid-autumn, ideally early in the morning when temperatures are low and flower corollas remain closed to preserve stigma quality.
- Manual collection: Harvesting is primarily manual by cutting flower stems carefully to avoid damaging the plants and encourage future growth.
- Hygiene: Workers must maintain high personal hygiene to prevent contamination, focusing especially on clean hands.
- Appropriate containers: Use clean, dry baskets that protect flowers from mechanical damage and environmental pollutants.
Transportation Guidelines
- Protection during transit: Flowers should be shielded from mechanical damage, excessive heat, and light to prevent quality loss.
- Minimize transit time: Transport flowers promptly to processing units or storage at controlled temperatures (4°C to 5°C) to prolong freshness.
Separation of Stigma
- Sanitary environment: Separation must be performed in clean, dust-free conditions with personnel practicing strict food hygiene.
- Handling and grading: Stigmas should be separated carefully from floral waste to produce different grades of saffron, with specific length and purity criteria.
- Containers: Use washable, safe containers that do not degrade saffron quality.
Drying Process
- Immediate drying: Stigmas must be dried soon after separation to maintain quality.
- Drying conditions: Controlled temperature and humidity are vital to achieve optimal moisture content, avoiding degradation of color and aroma.
- Methods: Various drying techniques may be employed, but maintaining moisture content in line with ISO 3632-1 standards is critical.
Storage Recommendations
- Controlled environment: Store dried saffron in clean, dry, and cool conditions to ensure the preservation of sensory and chemical properties.
- Packaging preparation: Proper curing prior to packing helps maintain long-term saffron quality and safety.
Applications
ISO 21983:2019 is invaluable for a broad range of stakeholders involved in the saffron supply chain, including:
- Farmers and harvesters ensuring the initial crop quality.
- Processors and separation unit operators aiming to meet specific saffron grades and certifications.
- Quality control and food safety professionals applying hygienic standards during handling.
- Exporters and packaging companies who require preserving saffron quality during storage and shipment.
- Regulatory bodies and certification agencies monitoring compliance with international best practices.
Adherence to these guidelines promotes standardization across saffron production processes, reducing economic losses and delivering premium quality saffron to consumers globally.
Related Standards
To complement ISO 21983:2019, organizations may consider the following related standards:
- ISO 3632-1 – Defines quality criteria for saffron based on chemical and sensory characteristics, including moisture content limits.
- ISO/TS 22002-1 and ISO/TS 22002-3 – Provide prerequisite programs for food hygiene management in agricultural production and food processing.
- Codex Alimentarius Guidelines (CAC/RCP 1 and CAC/RCP 42) – Cover general food hygiene principles that support safe handling during saffron processing.
Implementing these interconnected standards creates a robust framework to achieve high-quality, safe, and authentic saffron products.
By following ISO 21983:2019 guidelines, saffron producers can ensure superior product quality from harvest through to packaging - enhancing consumer trust and supporting sustainable saffron industry development worldwide.