{"id":"8a30d608-7ddd-5246-a21b-129b675a03e4","stable_key":"3d41d18a-e13a-59a0-a081-55bfcdd43e55:ceylon-coumarin","predicate":"has_measured_content","statement":"Authenticated C. verum bark contained only trace coumarin, whereas the tested cassia-type species contained substantial amounts.","claim_class":"identity","status":"source_derived_draft","evidence_grade":"ungraded","direction":"context_dependent","is_public":true,"mechanism_event_id":"78979242-6ce5-5587-bec4-d2cfb4b2049a","mechanism_event_label":"Ceylon generally had much less coumarin in these samples; the species and product still need checking.","subject":{"id":"be348c9c-afad-5ae4-bd57-cfec69dc4f78","slug":"ceylon","display_name":"Ceylon cinnamon / Cinnamomum verum bark preparations","entity_type_key":"chemical_species"},"object":{"id":"9fd9b93a-fdfd-5e09-92d3-0495bff41391","slug":"coumarin","display_name":"Coumarin","entity_type_key":"small_molecule"},"evidence_count":1,"mechanism_event":{"id":"78979242-6ce5-5587-bec4-d2cfb4b2049a","stable_key":"3d41d18a-e13a-59a0-a081-55bfcdd43e55:ceylon-coumarin-event","event_type":"biochemical_relationship","label":"Ceylon generally had much less coumarin in these samples; the species and product still need checking.","description":"Authenticated C. verum bark contained only trace coumarin, whereas the tested cassia-type species contained substantial amounts.","status":"provisional","compartment":null,"participants":[{"entity":{"id":"be348c9c-afad-5ae4-bd57-cfec69dc4f78","slug":"ceylon","display_name":"Ceylon cinnamon / Cinnamomum verum bark preparations","entity_type_key":"chemical_species"},"role":"subject","stoichiometry":null,"state_label":"","sequence_order":0,"notes":""},{"entity":{"id":"9fd9b93a-fdfd-5e09-92d3-0495bff41391","slug":"coumarin","display_name":"Coumarin","entity_type_key":"small_molecule"},"role":"target","stoichiometry":null,"state_label":"","sequence_order":1,"notes":""}]},"contexts":[{"dimension":"evidence_span","value_text":"{\"source_cache\": \"artifacts/ceylon-research/23627682.abstract.txt\", \"locator\": \"Primary indexed abstract; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"7d3f2b3624550aeea2fde2ed51c9700a7e00e7dacf8e72fc242733dd0eb84161\", \"start_char\": 0, \"end_char\": 1273, \"text_sha256\": \"7d3f2b3624550aeea2fde2ed51c9700a7e00e7dacf8e72fc242733dd0eb84161\"}","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"experimental_model","value_text":"UPLC-UV/MS authenticated bark and retail-product analysis","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"exposure","value_text":"Analytical sampling; no administered human dose","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"limitations","value_text":"Botanical identity and product-specific composition matter; traces do not mean zero, and retail products need not be Ceylon.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"nutrient_topic","value_text":"Ceylon cinnamon research collection; topical membership is not evidence of a direct dietary effect.","comparator":null,"unit":null,"notes":"","entity":{"slug":"ceylon","display_name":"Ceylon cinnamon / Cinnamomum verum bark preparations","entity_type_key":"chemical_species"}},{"dimension":"organism","value_text":"Cinnamomum verum, cassia, loureiroi and burmannii","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"plain_language","value_text":"Ceylon generally had much less coumarin in these samples; the species and product still need checking.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"primary_references","value_text":"[ceylon-p23627682] Cassia cinnamon as a source of coumarin in cinnamon-flavored food and food supplements in the United States. (2013). https://pubmed.ncbi.nlm.nih.gov/23627682/ DOI: 10.1021/jf4005862","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"tissue_or_cell_type","value_text":"Bark and commercial cinnamon foods/supplements","comparator":null,"unit":null,"notes":"","entity":null}],"evidence":[{"id":"8a31a375-8bd7-54b8-a3c6-6d4e0a3c35cf","evidence_kind":"source_excerpt","locator":"Lines 90-101","start_line":90,"end_line":101,"excerpt":"### ceylon-coumarin\nAuthenticated C. verum bark contained only trace coumarin, whereas the tested cassia-type species contained substantial amounts.\nCondition category: normal\nnutrient_topic: Ceylon cinnamon research collection; topical membership is not evidence of a direct dietary effect.\nplain_language: Ceylon generally had much less coumarin in these samples; the species and product still need checking.\norganism: Cinnamomum verum, cassia, loureiroi and burmannii\ntissue_or_cell_type: Bark and commercial cinnamon foods/supplements\nexperimental_model: UPLC-UV/MS authenticated bark and retail-product analysis\nlimitations: Botanical identity and product-specific composition matter; traces do not mean zero, and retail products need not be Ceylon.\nexposure: Analytical sampling; no administered human dose\nevidence_span: {\"source_cache\": \"artifacts/ceylon-research/23627682.abstract.txt\", \"locator\": \"Primary indexed abstract; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"7d3f2b3624550aeea2fde2ed51c9700a7e00e7dacf8e72fc242733dd0eb84161\", \"start_char\": 0, \"end_char\": 1273, \"text_sha256\": \"7d3f2b3624550aeea2fde2ed51c9700a7e00e7dacf8e72fc242733dd0eb84161\"}\n[ceylon-p23627682] Cassia cinnamon as a source of coumarin in cinnamon-flavored food and food supplements in the United States. (2013). https://pubmed.ncbi.nlm.nih.gov/23627682/ DOI: 10.1021/jf4005862","model_system":"UPLC-UV/MS authenticated bark and retail-product analysis","directness":"author_interpretation","verification_status":"source_derived_draft","notes":"Exact curation-document quotation, not publisher quotation. Study references: [ceylon-p23627682] Cassia cinnamon as a source of coumarin in cinnamon-flavored food and food supplements in the United States. (2013). https://pubmed.ncbi.nlm.nih.gov/23627682/ DOI: 10.1021/jf4005862","relationship":"supports","weight":1.0,"link_notes":"","source":{"id":"3aed3c5b-8016-5e37-ad6f-9019d34d19eb","stable_key":"import-3d41d18a-e13a-59a0-a081-55bfcdd43e55","title":"Ceylon cinnamon: metabolism, signaling and nutrient connections (2026-09-17)","document_type":"imported_text","citation_label":"AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. 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