Larchwood xylan

UNMAPPED_0424 complex UNMAPPED

Ontology mapping

Primary identifier
UNMAPPED_0424
Notes
Imported from mim-queue (source_id=mediadive.ingredient:1624); no CAS-RN or CHEBI/NCIT match. Reviewed on 2026-05-11 as a larchwood-derived xylan substrate/fraction pending polymer source and composition curation.

Synonyms (2)

SynonymTypeSourceOccurrences
Larchwood xylan RAW_TEXT mim-queue
Larchwood xylan (Sigma) CATALOG_VARIANT culturemech:output/ingredient_occurrences.tsv

Occurrence statistics

Total occurrences
0
Distinct media
0

Curation history

TimestampCuratorActionNew statusChanges
2026-04-30T18:43:03.698454+00:00 audit_import_ingredients[mim-queue] CREATED_AS_UNMAPPED UNMAPPED Imported from mim-queue (source_id=mediadive.ingredient:1624); no CAS-RN or CHEBI/NCIT match. Curator review needed.
2026-05-11T07:42:00Z mediaingredientmech-agentic-curation LLM CLASSIFIED_UNDEFINED_MIXTURE UNMAPPED Classified as a source-specific xylan substrate/fraction and left unmapped pending polymer source, composition, and exact ontology curation.
2026-08-06T00:00:00+00:00 edison_literature_identity LLM ANNOTATED Edison LITERATURE (PaperQA3) identity research; report at research/ingredients/Larchwood_xylan-edison-literature.md (local artifact — research/ is gitignored, so the findings are quoted here rather than linked). Report verdict: **Recommended interpretation:** *Larchwood xylan* is not a single small molecule, salt, hydrate, buffer, or fixed formulation. It is a **source-specific, heterogeneous plant polysaccharide preparation**, most appropriately retained as `UNDEFINED_MIXTURE` (or a polymer/material class, if that type becomes available). No ontology CURIE was proposed. Recorded as provenance only — no grounding applied from this run. Edison's recommendations are deliberately conservative, and a plausible identifier promoted by a mechanism that never decided anything is what #203 and #263 exist to undo. Any CURIE above is a curator's to accept or reject.
2026-08-07T00:00:00+00:00 edison_contextual_parent LLM REVERTED_PARENT_CONTEXT Removed the CHEBI:37166 xylan parent this tool had recorded. The term and its label are correct in the local ChEBI build, but the CURIE appears nowhere in the Edison report the entry cited as evidence — it came from a lookup I ran after reading the report's prose. Keeping it would have credited that lookup to the literature agent, and left two contradicting events one day apart on this record: one saying no CURIE was proposed, one sourcing a CURIE to the same run. Re-proposing it is fine, with its own evidence; see #294.
2026-08-30T06:20:04.233651+00:00 claude_culturemech_alias_backfill ADDED_SYNONYMS Added 1 CultureMech recipe surface form(s) that folded onto this record's published label but were absent from MIM's label index, so CultureMech could not resolve them: 'Larchwood xylan (Sigma)' (x1 CultureMech mentions). Source: culturemech:output/ingredient_occurrences.tsv.