| Botanical Identity | Correct scientific name, plant part, variety, and absence of substitution or adulteration. | Confirmed identity with no unauthorized substitute or undeclared plant material. | Macroscopic and microscopic examination, supported by chromatographic fingerprinting or DNA testing when appropriate. | Prevents mislabeling, inconsistent performance, and regulatory rejection at the destination market. |
| Organoleptic Quality | Color, aroma, taste, texture, freshness, and visible signs of deterioration. | Characteristic appearance and aroma; no musty, fermented, smoky, chemical, or rancid odor. | Documented sensory inspection using a defined sampling procedure. | Provides an early indication of poor drying, contamination, aging, or unsuitable storage. |
| Moisture Content | Water level in the dried herb and the risk of moisture migration during transport. | Commonly about 8–12% for many dried herbs, subject to the herb, plant part, and applicable specification. | Validated loss-on-drying or moisture-analysis method. | Excess moisture encourages mold, microbial growth, caking, and loss of aroma or active constituents. |
| Microbiological Safety | Total microbial load, yeast and mold, and key pathogens. | Salmonella absent in 25 g; other limits should follow the product category and destination-market requirements. | Accredited laboratory testing using validated microbiological methods. | Reduces food-safety risk and supports compliance with different import regulations. |
| Pesticide Residues | Residues from agricultural treatments, including compounds restricted in the importing country. | Each detected residue must comply with the applicable maximum residue limit of the destination market; substances without a permitted limit require special review. | Multi-residue screening by validated chromatographic methods, with risk-based target lists. | Pesticide limits differ by jurisdiction, so destination-specific testing is essential for customs clearance. |
| Heavy Metals | Lead, cadmium, arsenic, and mercury, including contamination from soil, water, or processing equipment. | Must remain within the legal limits for the specific herb and intended use in the importing jurisdiction. | ICP-MS or an equivalent validated elemental-analysis method. | Helps control cumulative exposure and prevents non-compliance caused by environmental contamination. |
| Mycotoxins | Aflatoxins and other toxins associated with mold growth during cultivation, drying, or storage. | Levels must comply with the destination-market limit; commonly controlled specifications may include total aflatoxins around 10 µg/kg or lower, depending on the jurisdiction and product category. | Validated immunoassay or LC-based testing, with representative sampling. | Mycotoxins can remain present even when visible mold is no longer apparent. |
| Foreign Matter | Stones, soil, insects, stems not included in the specification, plastic, metal, and other extraneous material. | No hazardous or sharp foreign material; total limits should follow the herb monograph or purchasing specification. | Visual inspection, sieving, sorting, and metal detection where appropriate. | Protects consumers, processing equipment, and the consistency of the finished product. |
| Active Marker Compounds | Concentration of characteristic active or marker compounds relevant to the herb’s intended use. | Meets the agreed product specification or recognized monograph range; the value is herb-specific. | HPLC, GC, UV-Vis, or another validated quantitative method selected for the herb. | Supports consistent potency, dosing, functionality, and batch-to-batch performance. |
| Processing and Drying | Harvest timing, drying temperature, processing aids, irradiation or fumigation status, and risk of thermal damage. | Process documented and suitable for preserving color, aroma, moisture control, and characteristic constituents. | Supplier questionnaire, process records, audit evidence, and batch testing. | Controlled processing improves stability and reduces variation across international shipments. |
| Traceability | Links between the finished batch, harvest area, harvest date, processing records, and testing results. | A unique lot code with records capable of tracing the material one step backward and one step forward. | Document review, lot-code reconciliation, and periodic traceability exercises. | Enables rapid investigation, targeted recalls, and reliable regulatory documentation. |
| Packaging and Storage | Food-contact suitability, protection from moisture, light, oxygen, pests, and odor transfer. | Intact, clean, sealed packaging with storage conditions appropriate to the herb; temperature and humidity monitored where necessary. | Packaging inspection, warehouse records, and transport-condition review. | Preserves quality during long-distance transport and reduces damage caused by climate differences. |
| Documentation and Compliance | Specifications, certificate of analysis, safety data, origin records, allergen information, and applicable export documents. | Documents are current, batch-specific where required, internally consistent, and aligned with destination-country rules. | Document verification, laboratory accreditation review, supplier qualification, and periodic reassessment. | Complete documentation reduces border delays, clarifies responsibilities, and supports dependable global supply. |