lb_streptomycin_medium

CultureMech:008552 bacterial COMPLEX SOLID_AGAR
Original name: LB + Streptomycin medium

Overview

External ontology
TOGO:M1970 — LB + Streptomycin medium
Applications
  • Microbial cultivation
pH
7.0
Notes
TOGO M1970 imports NBRC Medium 1248 LB + Streptomycin medium. NBRC 1248 lists the LB base with 10.0 ml/L Streptomycin solution (50 mg/ml), 15 g/L agar if needed, and pH 7.0.

Composition

flowchart LR
    CultureMech_008552["lb_streptomycin_medium"]
    ing0_Bacto_Tryptone__Difco_["Bacto Tryptone (Difco)"]
    CultureMech_008552 --> ing0_Bacto_Tryptone__Difco_
    ing1_Yeast_extract["Yeast extract"]
    CultureMech_008552 --> ing1_Yeast_extract
    ing2_NaCl["NaCl"]
    CultureMech_008552 --> ing2_NaCl
    CHEBI_26710["CHEBI:26710"]
    ing2_NaCl -.-> CHEBI_26710
    ing3_Distilled_water["Distilled water"]
    CultureMech_008552 --> ing3_Distilled_water
    CHEBI_15377["CHEBI:15377"]
    ing3_Distilled_water -.-> CHEBI_15377
    ing4_Agar__if_needed_["Agar (if needed)"]
    CultureMech_008552 --> ing4_Agar__if_needed_
    CHEBI_2509["CHEBI:2509"]
    ing4_Agar__if_needed_ -.-> CHEBI_2509

Ingredients (5)

# Ingredient Concentration Ontology Notes
1 Bacto Tryptone (Difco) 10 G_PER_L NBRC Medium 1248 lists Bacto Tryptone (Difco) as a source-disclosed digest product not reducible to one ChEBI molecule.
2 Yeast extract 5 G_PER_L FOODON:03315426
yeast extract
 TOGO M1970 / NBRC Medium 1248 lists 5 g/L Yeast extract.
3 NaCl
Cl.Na 58.443 g/mol
5 G_PER_L CHEBI:26710
sodium chloride
 TOGO M1970 / NBRC Medium 1248 lists 5 g/L NaCl.
4 Distilled water
H2O 18.015 g/mol
990 ML_PER_L CHEBI:15377
water
 TOGO M1970 / NBRC Medium 1248 lists 990 ml/L Distilled water.
5 Agar (if needed) 15 G_PER_L CHEBI:2509
agar
 TOGO M1970 / NBRC Medium 1248 lists 15 g/L agar if needed.

Preparation

  1. Prepare the LB base from 10 g/L Bacto Tryptone (Difco), 5 g/L yeast extract, 5 g/L NaCl, 990 ml/L distilled water, and 15 g/L agar if needed.
  2. Sterilize the 50 mg/ml streptomycin stocks separately by filtration.
  3. Add 10.0 ml/L filter-sterilized Streptomycin solution (50 mg/ml) to the LB base.

Solutions

Streptomycin solution (50 mg/ml)

Dose: 10.0 ML_PER_L

Stock composition
IngredientConcentrationNotes
Streptomycin 50.0 MG_PER_ML NBRC Medium 1248 specifies this stock as 50 mg/ml Streptomycin.
TOGO M1970 / NBRC Medium 1248 lists 10 ml/L Streptomycin solution (50 mg/ml).

Target organisms

No target organisms are recorded.

Provenance

TimestampCuratorActionNotes
2026-01-27T06:35:58.760176Z togo-import Imported from TOGO Medium Source: NBRC, ID: M1970
2026-01-28T19:48:07.413047Z chebi-enrichment Added CHEBI ontology terms to ingredients Enriched using MicrobeMediaParam and MediaDive chemical mappings
2026-03-09T08:04:11.946310+00:00 solution-migrator-v1.0 Migrated solutions from ingredients to solutions array Moved 1 solution(s) from ingredients
2026-03-13T06:19:57.956170Z culturemech-id-assigner-v1.0 Assigned CultureMech ID Assigned stable identifier: CultureMech:008552
2026-03-14T00:00:00+00:00 schema-defaulter-v1.0 Applied schema defaults and normalizations Added default solution name
2026-03-17T06:29:40.000000Z mediaingredientmech-enrichment-v1.0 Added MediaIngredientMech links Linked ingredients to MediaIngredientMech identifiers
2026-03-17T19:46:16.581874+00:00 normalize_media_names_to_snake_case.py NAME_NORMALIZED Normalized name from "LB + Streptomycin medium" to "lb_streptomycin_medium" for consistent matching
2026-05-16T09:03:38.902074+00:00 migrate_legacy_fields.py MIGRATED_LEGACY_FIELDS curation_history.date->timestamp=1
2026-06-05T07:41:10.944044+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.
2026-09-12T00:00:00-07:00 repair_togo_m1970_m1971_m1972_lb_streptomycin_rifampicin_score15.py RESOLVED_TOGO_M1970_M1971_M1972_LB_STREPTOMYCIN_RIFAMPICIN_SCORE15 TOGO M1970 imports NBRC Medium 1248 LB + Streptomycin medium. NBRC 1248 lists the LB base with 10.0 ml/L Streptomycin solution (50 mg/ml), 15 g/L agar if needed, and pH 7.0. Corrected the imported distilled-water row from a g/L artifact to NBRC's ml/L volume and nested the separately filter-sterilized 50 mg/ml antibiotic stocks.