Chitosan

CHEBI:16261 chemically defined MAPPED CHEBI EXACT_MATCH

Ontology mapping

Primary identifier: CHEBI:16261
Ontology label: chitosan

Nutritional roles

Role
CARBON_SOURCE
Confidence
1.0
Evidence
- Reference type
  DATABASE_ENTRY
  Reference text
  Imported from CultureMech pipeline
  Curator note
  Original role text: Carbon Source

Synonyms (6)

Synonym	Type	Source	Occurrences
Role: Carbon source; Properties: Organic compound, Simple component, Defined component	RAW_TEXT	CultureMech
(1->4)-2-amino-2-deoxy-beta-D-glucan	EXACT_SYNONYM	kg_microbe
Deacetylchitin	EXACT_SYNONYM	kg_microbe
[4)-beta-D-GlcpN(1->]n	EXACT_SYNONYM	kg_microbe
beta-1,4-Poly-D-glucosamine	EXACT_SYNONYM	kg_microbe
poliglusam	EXACT_SYNONYM	kg_microbe

Rejected enrichment labels (1)

Provenance-only candidates: these are not synonyms and do not resolve to this record.

Rejected label	Disposition	Source	Occurrences
hydrolysis: cationic chitosan	REJECTED_LABEL	kg_microbe

Chemical properties

Cas rn: 9012-76-4
Data source: CultureBotHT compounds_to_cas.csv
Retrieval date: 2026-04-05T21:48:44.851637+00:00
Molecular formula: (C6H11NO4)n.H2O
Inchi: InChI=1S/C6H13NO5/c7-3-5(10)4(9)2(1-8)12-6(3)11/h2-6,8-11H,1,7H2/t2-,3-,4-,5-,6-/m1/s1
Smiles: [H]O[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1N

Evidence (1)

DATABASE_MATCH via CultureMech

Imported from CultureMech pipeline, quality=DIRECT_MATCH

Occurrence statistics

Total occurrences: 3
Distinct media: 3

Curation history

Timestamp	Curator	Action	New status	Changes
2026-03-09T06:54:18.022301+00:00	import_from_culturemech	IMPORTED	MAPPED	Initial import from CultureMech pipeline
2026-04-05T21:48:44.851639+00:00	fetch_cas_rn_from_culturebot_csv	ADDED_CAS_RN	MAPPED	Added CAS-RN:9012-76-4 from CultureBotHT compounds_to_cas.csv (matched: Chitosan)
2026-04-18T00:00:00+00:00	cbclaw_kg_microbe_sweep LLM	ADDED_SYNONYMS	MAPPED	Added 6 synonyms from kg-microbe P4.4 enrichment: (1->4)-2-amino-2-deoxy-beta-D-glucan, Deacetylchitin, [4)-beta-D-GlcpN(1->]n, beta-1,4-Poly-D-glucosamine, hydrolysis: cationic chitosan, ... (1 more)
2026-05-01T07:35:32.752686+00:00	auto_classify_ingredient_type	AUTO_CLASSIFY_INGREDIENT_TYPE		set ingredient_type=SINGLE_INGREDIENT (CHEBI primary)
2026-05-01T08:08:28.586204+00:00	auto_classify_ingredient_type	AUTO_BACKFILL_CHEBI_CHEMISTRY		molecular_formula=(C6H11NO4)n.H2O; inchi=InChI=1S/C6H13NO5/c7-3-5(10)4(9)2(1-8)12-6(3)11/h2; smiles=[H]O[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1N
2026-05-02T03:12:13.318508+00:00	auto_classify_ingredient_type	AUTO_CLASSIFY_INGREDIENT_TYPE		set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula))
2026-05-29T23:35:36.110476+00:00	extract_roles_from_synonyms	ANNOTATED		Added media role: CARBON_SOURCE (confidence: 1.00)
2026-06-09T05:23:46.741133+00:00	correct_stale_ontology_labels.py	CORRECTED		ontology_label 'Chitosan' -> 'chitosan': synced to canonical CHEBI label (preferred_term 'Chitosan' unchanged).
2026-07-20T00:00:00+00:00	migrate_media_roles_to_facets	ANNOTATED		Migrated legacy media_roles to role facets (#128): CARBON_SOURCE -> nutritional_roles.CARBON_SOURCE
2026-08-27T03:16:39.518556+00:00	refresh_occurrence_statistics	CORRECTED		occurrence_statistics 2/2 -> 3/3 (media_count/total_occurrences), derived from distinct CultureMech recipe ids in the #337 occurrence table. The prior values came from the importer retired in #453, whose media_count counted a list truncated to 50 examples (#449). [source=ingredient_occurrences.tsv culturemech_rev=15a4da5c08 rows=194137 distinct_recipes=15257]
2026-09-22T06:14:49.563933+00:00	claude LLM	REJECTED_TRAIT_SYNONYMS		Retyped activity/assay phrases as provenance-only REJECTED_LABEL because they describe a process or organism trait, not an ingredient name (#703): 'hydrolysis: cationic chitosan'. Preserved original text and source metadata. No identity, mapping, role, or remaining-synonym claim was adjudicated.