Classification
Product TypeRaw Material
Product FormDried (whole seed)
Industry PositionPrimary Agricultural Product
Raw Material
Commodity GroupMedicinal and aromatic plants (botanical seeds used for food/tea substitute and traditional medicine)
Scientific NameSenna obtusifolia (syn. Cassia obtusifolia) and Senna tora (syn. Cassia tora)
PerishabilityLow (as a dried seed), but quality is sensitive to moisture exposure during drying, storage, and transport
Growing Conditions- Warm-season annual legume adapted to tropical to warm-temperate climates
- Often behaves as a weed outside managed cultivation; can thrive in disturbed soils in wet tropical to warm environments
Main VarietiesCassia obtusifolia / Senna obtusifolia (Cassiae Semen source species), Cassia tora / Senna tora (Cassiae Semen source species)
Consumption Forms- Roasted seed tea / tea substitute
- Ingredient for traditional medicine preparations
- Botanical ingredient for functional foods and dietary supplement products (market-dependent regulatory pathway)
Grading Factors- Botanical identity confirmation (C. obtusifolia vs. C. tora; avoidance of mixed/adulterated lots where not allowed)
- Moisture level and dryness uniformity
- Foreign matter and cleanliness
- Water and ash indices used in pharmacopoeial-style quality programs
- Mycotoxin screening (e.g., aflatoxins) and other contaminant tests as required by destination market
- Consistency against marker-compound expectations where pharmacopoeial positioning applies
Market
Cassia seeds (often marketed as Cassiae Semen / “Juemingzi”) are traded globally as a dried botanical seed used for traditional medicine applications and as a tea substitute/functional food ingredient, with demand centered in East Asia. Pharmacopoeial identity anchors commonly reference the seeds of Cassia obtusifolia L. and/or Cassia tora L., with taxonomy now generally treated under Senna (e.g., Senna obtusifolia and Senna tora). In international trade statistics, cassia seeds are typically captured within HS heading 1211 (medicinal/aromatic plants, including seeds), which can obscure product-specific flow visibility because HS 121190 aggregates many plant products. Market access and price realization are heavily influenced by quality control (identity, moisture/ash, and contaminant testing) and by differing country classifications (food vs. medicinal use).
Major Producing Countries- 중국Key cultivation and use geography for Cassiae Semen (Juemingzi) in East Asian food/medicine contexts.
- 대한민국Reported cultivation/use market; consumer use commonly includes roasted tea applications.
- 일본Reported cultivation/use market; referenced in pharmacopoeial context and tea-substitute consumption.
- 인도Species presence and medicinal-plant context reported in review literature; may contribute to regional supply for dried seed trade.
Major Exporting Countries- 중국Category context: leading exporter share reported for HS 121190 (medicinal/aromatic plants category that can include cassia seeds); not cassia-seed-specific.
- 인도Category context: major exporter share reported for HS 121190; not cassia-seed-specific.
- 독일Category context: reported as a significant HS 121190 exporter, reflecting re-export/processing/trading roles; not cassia-seed-specific.
- 이집트Category context: reported among notable HS 121190 exporters; not cassia-seed-specific.
- 미국Category context: reported among notable HS 121190 exporters; not cassia-seed-specific.
- 캐나다Category context: reported among notable HS 121190 exporters; not cassia-seed-specific.
Major Importing Countries- 미국Category context: reported as a top HS 121190 importer; cassia seeds may enter under botanical/ingredient channels subject to regulatory classification.
- 독일Category context: reported as a top HS 121190 importer and EU trading hub; not cassia-seed-specific.
- 일본Category context: reported among top HS 121190 importers; aligns with East Asian usage patterns.
- 중국Category context: HS 121190 shows two-way trade; not cassia-seed-specific.
- 대한민국Category context: reported among top HS 121190 importers; aligns with tea-substitute and traditional-use demand.
Specification
Major VarietiesCassia obtusifolia L. (syn. Senna obtusifolia), Cassia tora L. (syn. Senna tora)
Physical Attributes- Hard, small brown seeds traded as a dried botanical raw material; appearance-based differentiation between C. obtusifolia and C. tora is difficult, increasing the need for identity controls.
Compositional Metrics- Pharmacopoeial-style quality programs may use marker compounds (e.g., chrysophanol and aurantio-obtusin) alongside contaminant screening (e.g., aflatoxins) and basic quality indices (water and ash).
Grades- Pharmacopoeial compliance positioning (e.g., China/Japan/Korea pharmacopeia references) versus non-pharmacopoeial commodity grades, often differentiated by identity confirmation, moisture/foreign matter, and contaminant test results.
Packaging- Bulk sacks or lined bags (moisture barrier favored) for dried seed shipment; packaging selection is typically driven by moisture control and cleanliness to reduce mold/mycotoxin risk.
Supply Chain
Value Chain- Cultivation/collection -> harvest -> drying -> cleaning (foreign matter removal) -> sorting -> packaging -> export distribution -> downstream roasting/grinding/tea blending or extract manufacturing (depending on end use)
Demand Drivers- Tea-substitute consumption and traditional food/medicine dual-use positioning in East Asian markets
- Ingredient demand from herbal product manufacturers requiring pharmacopoeial-style quality documentation (identity, safety, and marker-component testing)
Temperature- Ambient logistics are typical for dried seeds, but dry storage and humidity control are critical to prevent mold growth and mycotoxin risk.
Shelf Life- Shelf stability is strongly moisture-dependent; buyers often treat storage and transit moisture control as the main determinant of usable life and compliance.
Risks
Food Safety and Quality HighAflatoxin and other contaminant risks (driven by inadequate drying, poor storage humidity control, and variable quality systems) can trigger border rejections and make lots unusable for food/tea or regulated medicinal channels; pharmacopoeial references explicitly include aflatoxin testing as part of quality control for Cassiae Semen.Specify maximum moisture/foreign matter, require accredited lab testing (including mycotoxins) per target-market requirements, and audit post-harvest drying/storage practices and traceability.
Product Identity and Adulteration MediumCassiae Semen is sourced from two closely related seed materials (C. obtusifolia and C. tora) that are difficult to distinguish visually and are reported to be mixed in practice, creating risks of mislabeling, inconsistent composition, and non-compliance where species-specific identity is required.Use identity controls beyond visual inspection (e.g., TLC/HPLC marker profiles consistent with pharmacopoeial approaches) and enforce supplier documentation for botanical origin.
Regulatory Compliance MediumCountry-to-country differences in classification (food/tea substitute vs. medicinal ingredient) can change allowable claims, required registrations, and testing scope, increasing time-to-market and compliance costs; some jurisdictions treat related source plants as invasive weeds, adding supply-chain and contamination scrutiny.Map each target market’s regulatory pathway (food, tea, supplement, herbal medicine), align labeling/claims accordingly, and maintain a compliance dossier (identity, safety, and contaminant testing) tailored by market.
Sustainability- Post-harvest drying and storage management to reduce spoilage/mold and associated waste
- Invasive-weed considerations outside core consumption regions (the source plants can be treated as invasive weeds in some countries), which can affect cultivation permissibility and contamination controls in agricultural systems
FAQ
What plant species are commonly traded as “cassia seeds” (Cassiae Semen / Juemingzi)?In pharmacopoeial and review literature, Cassiae Semen (“Juemingzi”) refers to the dried mature seeds of Cassia obtusifolia L. and/or Cassia tora L. In modern botanical taxonomy, these names are generally treated under the genus Senna (e.g., Senna obtusifolia and Senna tora).
Why is aflatoxin testing a major buyer requirement for cassia seeds?Because cassia seeds are traded as a dried botanical product, inadequate drying or humid storage can increase mold risk. Pharmacopoeial-style quality control described in the literature includes aflatoxin testing (alongside measures like water and ash), so buyers often require contaminant testing to protect market access and compliance.
Where is cassia seed most commonly consumed in end markets?The literature describes Cassiae Semen as widely used in Asia, including use as a tea substitute in China, Japan, and South Korea, alongside traditional medicinal applications.