Overview
ISO 927:2009, titled "Spices and condiments - Determination of extraneous matter and foreign matter content," is an international standard developed by ISO’s Technical Committee ISO/TC 34, Subcommittee SC 7, dedicated to spices, culinary herbs, and condiments. This standard specifies a general procedure for the visual examination of whole spices and dehydrated herbs using magnification not exceeding 10 times. The method focuses on identifying and quantifying macro filth, encompassing both extraneous and foreign matter that may be present in spices and condiments.
By adhering to ISO 927:2009, laboratories and quality control entities can ensure consistent and reliable assessment of spices for contamination and impurities, helping to maintain product safety, quality, and compliance with regulatory expectations.
Key Topics
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Scope and Application
ISO 927:2009 applies primarily to whole spices and dehydrated herbs, providing a standardized visual identification procedure for macro foreign and extraneous matter seen by the naked eye or magnified up to 10x.
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Definitions of Matter
- Macro Foreign Matter: Visible unwanted materials not part of the original plant, including animal origin contaminants (excreta, insects) or non-animal materials (stones, stems, mold).
- Macro Extraneous Matter: Visible plant-based waste materials belonging to the same species but considered as wastes, such as floral debris.
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Sampling and Sample Preparation
Sampling is carried out according to ISO 948, ensuring representative samples from spice lots. Sample size and portion depend on the spice type, with detailed guidelines included for high and low bulk density products.
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Examination Procedure
The procedure involves spreading the spice sample on a clean white surface under suitable lighting and systematically separating all macro filth using spatulas and magnifying tools. Nutmeg, for example, requires breaking and focused examination of internal surfaces.
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Calculation and Reporting
Results are expressed in terms of mass fractions (percentages) for extraneous and foreign matter. Animal-origin contaminants are classified and reported by type, count, and mass fraction for full transparency in quality analysis.
Applications
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Quality Control in Spice Production and Processing
Ensures that spices and condiments meet safety and purity standards by detecting impurities such as mold, insects, foreign plant fragments, or animal contaminants.
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Import/Export Inspection and Compliance
Facilitates harmonized inspection procedures to comply with international trade requirements, reducing shipment rejections due to contamination concerns.
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Food Safety and Consumer Protection
Helps manufacturers and distributors guarantee products free from visible contaminants, protecting consumer health.
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Regulatory and Certification Use
Assists regulatory bodies and certification agencies in verifying contamination limits during surveillance and compliance assessments of spices and herbs.
Related Standards
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ISO 948: Spices and Condiments - Sampling
Defines standardized sampling methods critical for obtaining representative spice samples for examination under ISO 927.
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ASTA Cleanliness Specifications (American Spice Trade Association)
Offers complementary guidelines on acceptable cleanliness levels and foreign matter limits in spices and herbs, used widely in North America.
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FDA Macroanalytical Procedures Manual
Provides procedural references for macro-level contamination analysis, sharing practical insights aligned with ISO 927’s principles.
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European Spice Association Quality Minima Document
Supplements ISO 927 by setting expected quality thresholds and contaminants limits for spice products distributed in European markets.
Adoption of ISO 927:2009 supports consistent, reproducible detection and quantification of extraneous and foreign matter in spices and condiments worldwide. This enhances product quality, consumer safety, and regulatory compliance across the food industry supply chain.
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