Overview
ISO 1003:2008 - "Spices - Ginger (Zingiber officinale Roscoe) - Specification" defines quality, chemical, physical and hygienic requirements for commercial dried ginger. The standard covers whole, sliced, cut and ground ginger, sampling and test methods, a normative method for calcium determination (Annex A) and storage/transport recommendations (Annex B). It is intended to support consistent product specification, testing and trade.
Key topics and technical requirements
- Product description: Dried, peeled or unpeeled rhizome of Zingiber officinale in pieces (≥20 mm), slices, small cut pieces or ground; yellowish‑white colour; characteristic pungent, lemony odour and taste.
- Physical requirements
- Free from living insects and practically free from visible dead insects/insect fragments.
- Extraneous matter ≤ 1% mass fraction; foreign matter ≤ 0.5% mass fraction (ISO 927).
- Ground ginger must be free from coarse particles; fineness agreed buyer/seller.
- Chemical requirements (on dry basis)
- Moisture: whole/pieces ≤ 12.0%; ground ≤ 11.0% (ISO 939).
- Total ash ≤ 8.0% (ISO 928). Note: incineration at 600 °C ± 25 °C.
- Acid‑insoluble ash ≤ 1.5% (ISO 930).
- Volatile oil: whole/pieces ≥ 1.5%; ground ≥ 1.0% (ISO 6571).
- Calcium (as CaO): unbleached ≤ 1.1%; if bleached (optional) ≤ 2.5% - Annex A provides the titrimetric method (incineration → calcium oxalate precipitation → KMnO4 titration).
- Hygienic and regulatory: Must comply with applicable international, regional and national regulations on contaminants, pesticides, mycotoxins, heavy metals and hygienic handling. Treatments (fumigation, irradiation, chemical bleaching) only by buyer‑seller agreement.
- Sampling & testing: Sampling per ISO 948; ground test samples passed through 1 mm sieve (ISO 565). Test methods referenced in the standard should be used for conformity assessment.
- Packing & labelling: New, food‑grade packaging that protects from moisture, loss of volatile matter and odours; labelling data agreed between buyer and seller.
Applications and users
- Primary users: spice producers, processors, packers, exporters and importers of ginger.
- Secondary users: food safety laboratories, quality assurance teams, buyers, commodity graders and regulators.
- Practical uses: drafting commercial specifications and contracts, quality control and acceptance testing, laboratory method selection (including calcium determination), compliance checks for export/import, and guidance for storage and transport to preserve quality.
Related standards
ISO 1003 references and aligns with other ISO methods for spices and condiments such as ISO 927, 928, 930, 939, 948, 6571, 1208 and ISO 565 (sieves). It also complements Codex hygiene guidance for spices.
Keywords: ISO 1003:2008, ginger specification, Zingiber officinale, spices standard, calcium determination, moisture content, volatile oil, storage and transport, spice quality control.
