bcye_alpha_agar

CultureMech:001712 bacterial COMPLEX SOLID_AGAR
Original name: BCYE alpha agar

Overview

External ontology
mediadive.medium:585a (source link unavailable) — BCYE alpha agar
Applications
  • Microbial cultivation
pH
6.9
Notes
Source: DSMZ

Composition

flowchart LR
    CultureMech_001712["bcye_alpha_agar"]
    ing0_OXOID_Legionella_CYE_Agar_base["OXOID Legionella CYE-Agar base"]
    CultureMech_001712 --> ing0_OXOID_Legionella_CYE_Agar_base
    ing1_ACES["ACES"]
    CultureMech_001712 --> ing1_ACES
    CHEBI_39061["CHEBI:39061"]
    ing1_ACES -.-> CHEBI_39061
    ing2_Yeast_extract["Yeast extract"]
    CultureMech_001712 --> ing2_Yeast_extract
    ing3_Activated_charcoal["Activated charcoal"]
    CultureMech_001712 --> ing3_Activated_charcoal
    ing4_Na2_alpha_ketoglutarate["Na2 alpha-ketoglutarate"]
    CultureMech_001712 --> ing4_Na2_alpha_ketoglutarate
    CHEBI_16810["CHEBI:16810"]
    ing4_Na2_alpha_ketoglutarate -.-> CHEBI_16810
    ing5_Agar["Agar"]
    CultureMech_001712 --> ing5_Agar
    CHEBI_2509["CHEBI:2509"]
    ing5_Agar -.-> CHEBI_2509
    ing6_L_Cysteine_HCl_x_H2O["L-Cysteine HCl x H2O"]
    CultureMech_001712 --> ing6_L_Cysteine_HCl_x_H2O
    CHEBI_91248["CHEBI:91248"]
    ing6_L_Cysteine_HCl_x_H2O -.-> CHEBI_91248
    ing7_Fe4_PO4_2["Fe4(PO4)2"]
    CultureMech_001712 --> ing7_Fe4_PO4_2
    CHEBI_132767["CHEBI:132767"]
    ing7_Fe4_PO4_2 -.-> CHEBI_132767

Ingredients (8)

# Ingredient Concentration Ontology Notes
1 OXOID Legionella CYE-Agar base 1000 G_PER_L
2 ACES 20.4082 G_PER_L CHEBI:39061
ACES
3 Yeast extract 20.4082 G_PER_L
4 Activated charcoal 4.08163 G_PER_L
5 Na2 alpha-ketoglutarate
C5H4O5 144.082 g/mol
2.04082 G_PER_L CHEBI:16810
2-oxoglutarate(2-)
6 Agar 30.6122 G_PER_L CHEBI:2509
agar
7 L-Cysteine HCl x H2O
C3H7NO2S.H2O.HCl 175.637 g/mol
40 G_PER_L CHEBI:91248
L-cysteine hydrochloride hydrate
8 Fe4(PO4)2
4Fe.3O7P2 745.203 g/mol
25 G_PER_L CHEBI:132767
ferric pyrophosphate

Preparation

  1. Prepare OXOID Legionella CYE-Agar base or solution A.
  2. Cool down to 50 °C.
  3. Add solution C (Cysteine-HCl) and solution D (ferric pyrophosphate).
  4. Adjust pH to 6.9 with sterile 1.0 N KOH or HCl.
  5. The pH of the medium is critical.
  6. Finally, add solution B. Swirl medium in flask during dispensing to petri dishes or tubes in order to keep charcoal suspended.
  7. Dehydrated media preparations are available from media distributors.
  8. We use OXOID Legionella CYE-Agar base with Legionella BCYE supplement.
  9. Note: Alternatively use CYE-ACES AGAR
  10. Dissolve ACES and bring to pH 6.9 by slowly adding 1 N KOH. Add the other components and dissolve by boiling. Autoclave at 121°C for 15 minutes. Cool to 50 - 55°C.
  11. Autoclave at 121°C and cool to 50 - 55°C.
  12. Prepare a fresh solution and filter-sterilize it.
  13. Prepare a fresh solution by heating to 50 - 55°C in a water-bath. Filter-sterilize solution separately.
  14. Please note: Soluble ferric pyrophosphate must be kept dry and in the dark. Do not use if chemical looses its green colour and becomes brown or yellow.

Target organisms

No target organisms are recorded.

Provenance

Merged from 1 source record.

TimestampCuratorActionNotes
2026-01-26T17:53:11.649574Z mediadive-import Imported from MediaDive Source: DSMZ, ID: 585a
2026-03-13T06:19:06.617174Z culturemech-id-assigner-v1.0 Assigned CultureMech ID Assigned stable identifier: CultureMech:001712
2026-03-17T06:30:04.000000Z mediaingredientmech-enrichment-v1.0 Added MediaIngredientMech links Linked ingredients to MediaIngredientMech identifiers
2026-03-17T19:45:18.826521+00:00 normalize_media_names_to_snake_case.py NAME_NORMALIZED Normalized name from "BCYE alpha agar" to "bcye_alpha_agar" for consistent matching
2026-06-05T07:40:50.693311+00:00 mim-legacy-to-chebi-migration-v1.0 Refreshed legacy MediaIngredientMech links to CHEBI keying Replaced 4 legacy mediaingredientmech_term link(s) with mediaingredientmech_chebi_term (id-safe: ingredient's own CHEBI + label). MIM deprecated the MediaIngredientMech:NNNNNN id scheme.
2026-06-10T07:37:34.584569+00:00 primary-term-regrounding-v1.0 Re-grounded wrong primary term id (OAK-verified) 1 primary term(s); ingredient name resolved by OAK sqlite:obo:chebi.
2026-08-06T03:05:24.929686+00:00 merge_recipes.py MERGED_RECIPES merged 1 source recipe(s) on fingerprint 9ae4195123c025fb8d2fb72fe29177e0a665e2603f0109a2c0683b4377a57203