Overview
SIST ISO 5563:1997 establishes the international specification for dried peppermint (Mentha piperita Linnaeus), covering the quality requirements, sampling, testing methods, packing, and labeling of dried peppermint leaves. This standard ensures consistency and safety in the trade and use of dried peppermint by defining chemical, physical, and sensory attributes. It applies to dried leaves or broken/rubbed leaves obtained from cultivated peppermint, excluding spearmint, which is covered under a different standard.
Key elements include odour and flavour profiles, freedom from contaminants, particle size grading, chemical composition, and detailed protocols for detecting adulterants such as Mentha rubra Hudson. Additional recommendations include storage and transport conditions to maintain product quality.
Key Topics
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Product Definition: Dried peppermint consists of dried, broken, or rubbed leaves of cultivated Mentha piperita collected before or at the start of flowering. This includes dehydrated forms.
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Sensory Requirements: The product shall have a highly mentholated odour and a spicy, pungent, and refreshing flavour, free from off-flavours such as mustiness or foreign odours.
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Contaminant Limits:
- Must be free from living insects, moulds, and practically free from insect fragments or rodent contamination.
- Extraneous plant material (mint species other than peppermint or foreign plants) limited to strict thresholds.
- The presence of Mentha rubra Hudson (which has an unpleasant carvone odour) capped at 0.5% maximum.
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Grading and Particle Size:
- Grade I: Whole or broken leaves larger than 5.6 mm.
- Grade II: Broken leaves between 5.6 and 2.0 mm.
- Limits on undersized particles and discolored leaves vary by grade.
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Chemical Specifications:
- Maximum moisture content: 13% (Grade II), 14% (Grade I).
- Total ash and acid-insoluble ash content limits.
- Minimum volatile oil content to ensure aroma and flavour integrity.
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Testing Methods:
- Sampling according to ISO 948.
- Chemical and physical tests referenced to ISO methods, including moisture (ISO 939), ash content (ISO 920, ISO 930), and volatile oil content (ISO 6571).
- Identification of Mentha rubra Hudson leaves via recommended visual criteria.
- Detection of carvone by a thin-layer chromatography method detailed in Annex B.
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Packing and Marking:
- Packaging should protect dried peppermint from moisture and contamination.
- Containers (cases, plywood/fibreboard boxes, sacks) must be clean, lined with paper for loose packing, and protect product quality.
- Labels must include product name, grade, origin, batch/test certificate number, harvest year, and reference to ISO 5563 if applicable.
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Storage and Transport:
- Stored in dry, well-ventilated, covered premises protected from direct sunlight, moisture, pests, and off-odours.
- Controlled ventilation and fumigation facilities recommended to maintain quality.
- Transport must avoid exposure to humidity, heat, and contamination.
Applications
SIST ISO 5563:1997 is essential for stakeholders involved in the agricultural production, processing, trading, and quality control of dried peppermint. It provides:
- A benchmark for manufacturers and packers to meet international quality standards.
- Guidance for importers and exporters ensuring product conformity and authenticity.
- Support for regulatory and inspection bodies conducting compliance and safety checks.
- Procedures useful for laboratories engaged in adulteration detection and chemical analysis.
- Recommendations to optimize storage and transport, preserving peppermint’s sensory and functional qualities in food, pharmaceutical, and cosmetic applications.
By following ISO 5563, companies ensure product integrity, consumer safety, and facilitate global trade of high-quality dried peppermint.
Related Standards
- ISO 2256 - Specification for dried spearmint leaves, distinct from peppermint specifications.
- ISO 920 - Determination of total ash in spices and condiments.
- ISO 930 - Test methods for acid-insoluble ash.
- ISO 939 - Measurement of moisture content in spices.
- ISO 948 - Sampling of spices and condiments.
- ISO 2825 - Preparation of ground samples for analysis.
- ISO 3588 - Determination of degree of fineness by hand sieving.
- ISO 6571 - Volatile oil content determination in spices and condiments.
These interlinked standards form a comprehensive framework for the analysis, quality assurance, and handling of spices and herbs, including peppermint.
By adhering to SIST ISO 5563:1997, the dried peppermint industry can guarantee a consistent, high-quality product that meets global trade requirements while protecting consumer interests.