Overview
- External ontology
- mediadive.medium:1117 (source link unavailable) — PYS MEDIUM
- Applications
-
- Microbial cultivation
- pH
- 7.2
- Notes
- Source: DSMZ | Link: https://www.dsmz.de/microorganisms/medium/pdf/DSMZ_Medium1117.pdf
Composition
flowchart LR
CultureMech_000553["pys_medium"]
ing0_Peptone["Peptone"]
CultureMech_000553 --> ing0_Peptone
ing1_Yeast_extract["Yeast extract"]
CultureMech_000553 --> ing1_Yeast_extract
ing2_NaCl["NaCl"]
CultureMech_000553 --> ing2_NaCl
CHEBI_26710["CHEBI:26710"]
ing2_NaCl -.-> CHEBI_26710
ing3_Tap_water["Tap water"]
CultureMech_000553 --> ing3_Tap_water
CHEBI_15377["CHEBI:15377"]
ing3_Tap_water -.-> CHEBI_15377
Ingredients (4)
| # | Ingredient | Concentration | Ontology | Notes |
|---|---|---|---|---|
| 1 | Peptone | 8 G_PER_L | ||
| 2 | Yeast extract | 4 G_PER_L | ||
| 3 |
NaCl
Cl.Na 58.443 g/mol
|
2 G_PER_L |
CHEBI:26710
sodium chloride
|
|
| 4 |
Tap water
H2O 18.015 g/mol
|
1000 G_PER_L |
CHEBI:15377
water
|
Preparation
- Adjust to pH 7.2
Target organisms
No target organisms are recorded.
Provenance
| Timestamp | Curator | Action | Notes |
|---|---|---|---|
| 2026-01-26T17:53:13.435448Z | mediadive-import | Imported from MediaDive | Source: DSMZ, ID: 1117 |
| 2026-03-13T06:18:56.343340Z | culturemech-id-assigner-v1.0 | Assigned CultureMech ID | Assigned stable identifier: CultureMech:000553 |
| 2026-03-17T06:30:22.000000Z | mediaingredientmech-enrichment-v1.0 | Added MediaIngredientMech links | Linked ingredients to MediaIngredientMech identifiers |
| 2026-03-17T19:45:07.414347+00:00 | normalize_media_names_to_snake_case.py | NAME_NORMALIZED | Normalized name from "PYS MEDIUM" to "pys_medium" for consistent matching |
| 2026-06-05T07:41:43.511982+00:00 | mim-legacy-to-chebi-migration-v1.0 | Refreshed legacy MediaIngredientMech links to CHEBI keying | Replaced 2 legacy mediaingredientmech_term link(s) with mediaingredientmech_chebi_term (id-safe: ingredient's own CHEBI + label). MIM deprecated the MediaIngredientMech:NNNNNN id scheme. |
| 2026-10-07T13:32:40.086487+00:00 | codex | CURATED_MEDIUM_CONCENTRATION_SOURCE_EVIDENCE | Exact medium/source membership, ingredient inventory/forms, physical-state conditions, literal snippets, and arithmetic checked. Stock boundaries, source-only rows, preparation context, and variants remain explicit follow-up tasks; secondary chemical mappings unchanged. |