Overview
- External ontology
- mediadive.medium:974 (source link unavailable) — 1/2 YTSS MEDIUM
- Applications
-
- Microbial cultivation
- pH
- 7.0
- Notes
- Source: DSMZ | Link: https://www.dsmz.de/microorganisms/medium/pdf/DSMZ_Medium974.pdf
Composition
flowchart LR
CultureMech_002156["1_2_ytss_medium"]
ing0_Yeast_extract["Yeast extract"]
CultureMech_002156 --> ing0_Yeast_extract
ing1_Tryptone["Tryptone"]
CultureMech_002156 --> ing1_Tryptone
ing2_Sea_Salt["Sea Salt"]
CultureMech_002156 --> ing2_Sea_Salt
ing3_Agar["Agar"]
CultureMech_002156 --> ing3_Agar
CHEBI_2509["CHEBI:2509"]
ing3_Agar -.-> CHEBI_2509
Ingredients (4)
| # | Ingredient | Concentration | Ontology | Notes |
|---|---|---|---|---|
| 1 | Yeast extract | 2 G_PER_L |
FOODON:03315426
Yeast extract
|
|
| 2 | Tryptone | 1.25 G_PER_L |
MICRO:0000182 (source link unavailable)
Tryptone
|
|
| 3 | Sea Salt | 20 G_PER_L | ||
| 4 | Agar | 15 G_PER_L |
CHEBI:2509
agar
|
(for solid medium) |
Preparation
- Final pH 7.0
- Solid media is prepared by adding 15 g/l agar.
Target organisms
No target organisms are recorded.
Provenance
| Timestamp | Curator | Action | Notes |
|---|---|---|---|
| 2026-01-26T17:53:12.950766Z | mediadive-import | Imported from MediaDive | Source: DSMZ, ID: 974 |
| 2026-03-13T06:19:10.811082Z | culturemech-id-assigner-v1.0 | Assigned CultureMech ID | Assigned stable identifier: CultureMech:002156 |
| 2026-03-17T06:30:06.000000Z | mediaingredientmech-enrichment-v1.0 | Added MediaIngredientMech links | Linked ingredients to MediaIngredientMech identifiers |
| 2026-03-17T19:45:23.531845+00:00 | normalize_media_names_to_snake_case.py | NAME_NORMALIZED | Normalized name from "1/2 YTSS MEDIUM" to "1_2_ytss_medium" for consistent matching |
| 2026-06-05T07:40:15.580682+00:00 | mim-legacy-to-chebi-migration-v1.0 | Refreshed legacy MediaIngredientMech links to CHEBI keying | Replaced 1 legacy mediaingredientmech_term link(s) with mediaingredientmech_chebi_term (id-safe: ingredient's own CHEBI + label). MIM deprecated the MediaIngredientMech:NNNNNN id scheme. |
| 2026-09-13T00:00:00-07:00 | repair_bacterial_score10_extracts.py | GROUNDED_BACTERIAL_EXTRACTS_SCORE10 | Applied exact MediaIngredientMech mappings for Tryptone, Yeast extract. |
| 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. |