Beta-Lactose

Ontology mapping

Primary identifier: CHEBI:36218
Ontology label: beta-lactose
Notes: Created from FEBA ontology enrichment workflow. Used in 1 FEBA media formulations.
kg-microbe node: CHEBI:36218

Nutritional roles

Role
CARBON_SOURCE
Confidence
0.7
Evidence
- Reference type
  COMPUTATIONAL_PREDICTION
  Reference text
  Inferred from CHEBI ancestry: subclass/has_role of CHEBI:16646 (carbohydrate)
  Curator note
  Provisional role inferred from CHEBI is_a/has_role closure; review recommended.
Role
ENERGY_SOURCE
Confidence
0.7
Evidence
- Reference type
  COMPUTATIONAL_PREDICTION
  Reference text
  Canonical energy substrate (catabolised for energy)
  Curator note
  Provisional ENERGY_SOURCE added alongside CARBON_SOURCE; review recommended.

Synonyms (3)

Synonym	Type	Source
lactose	EXACT_SYNONYM	merged_from_duplicate_mim_record
Role: Carbon source	RAW_TEXT	CultureMech
beta-D-galactopyranosyl-(1->4)-beta-D-glucopyranose	EXACT_SYNONYM	chebi_synonym_review

Chemical properties

Cas rn: 5965-66-2
Data source: FEBA ontology enrichment (via PubChem)
Retrieval date: 2026-04-07T10:19:05.502625+00:00
Molecular formula: C12H22O11
Inchi: InChI=1S/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5+,6+,7-,8-,9-,10-,11-,12+/m1/s1
Smiles: OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)[C@H](O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O

Evidence (1)

CAS_RN_CROSS_REFERENCE via PubChem

ChEBI ID CHEBI:36218 found via PubChem CAS-RN cross-reference

Occurrence statistics

Total occurrences: 1
Distinct media: 1

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
2026-04-05T19:52:48.063624+00:00	fetch_cas_rn_from_pubchem	ADDED_CAS_RN	MAPPED	Added CAS-RN:200-559-2 from PubChem API via name lookup (lactose)
2026-04-07T10:19:05.502616+00:00	feba_ontology_enrichment_batch	CREATED	MAPPED	Created ingredient file from FEBA ontology enrichment batch with ChEBI ID CHEBI:36218
2026-04-09T00:32:50.689620+00:00	enrich_mim_cas_rn_batch	CAS_RN_ADDED	MAPPED	Added CAS-RN 5965-66-2 from PubChem (via CHEBI:36218)
2026-04-19T07:39:23.955331+00:00	audit_mim_merge	MERGED_FROM_DUPLICATES	MAPPED	Absorbed 1 duplicate MIM record(s) into this one: Lactose_2.yaml. Synonyms, curation_history, and occurrence counts were unioned/summed; winner selected by highest occurrence count with preferred_term readability tie-break.
2026-05-01T07:35:32.394276+00:00	auto_classify_ingredient_type	AUTO_CLASSIFY_INGREDIENT_TYPE		set ingredient_type=SINGLE_INGREDIENT (CHEBI primary)
2026-05-01T08:08:28.206439+00:00	auto_classify_ingredient_type	AUTO_BACKFILL_CHEBI_CHEMISTRY		molecular_formula=C12H22O11; inchi=InChI=1S/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3); smiles=OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)[C@H](O)O[
2026-05-02T03:12:12.802200+00:00	auto_classify_ingredient_type	AUTO_CLASSIFY_INGREDIENT_TYPE		set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula))
2026-05-30T00:34:39.279590+00:00	infer_roles_from_chebi_ancestry	ANNOTATED		Added media role: CARBON_SOURCE (confidence: 0.70)
2026-06-04T05:38:59.200475+00:00	infer_energy_source	ANNOTATED		Added media role: ENERGY_SOURCE (confidence: 0.70)
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; ENERGY_SOURCE -> nutritional_roles.ENERGY_SOURCE
2026-08-27T03:16:39.518422+00:00	refresh_occurrence_statistics	CORRECTED		occurrence_statistics 2/2 -> 1/1 (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]