1.05406

GranuCult^® Baird-Parker agar (base)

acc. ISO 6888 and FDA-BAM, suitable for microbiology

• 동의어(들): Staphylococcus selective agar, Staphylococcus selective agar acc. to BAIRD-PARKER (base)
• UNSPSC 코드: 41106213

속성

• Agency: APHA; FDA-BAM; ISO 6888
• Quality Level: 200
• 형태: medium granules (dehydrated (DCM))
• 제조업체/상표: GranuCult^®
• 기술: microbe id | specific enzyme detection: suitable; microbiological culture: suitable
• pH: 6.8 (37 °C, 58 g/L in H₂O)
• solubility: 58 g/L
• 벌크 밀도: 570 kg/m³
• 응용 분야: food and beverages; microbiology
• 저장 온도: 15-25°C
• 적합성: Staphylococcus spp.

설명

일반 설명

GranuCult^® Baird-Parker agar (base) is used for the isolation and enumeration of Staphylococcus aureus. This medium contains lithium chloride and tellurite to inhibit the growth of accompanying microbial flora, whereas pyruvate and glycine selectively stimulate the growth of staphylococci. Agar is the solidifying agent. The egg-yolk content makes the medium opaque. Staphylococcus colonies show two characteristic features when grown in this medium: (a) characteristic zones and rings are formed as a result of lipolysis and proteolysis, and (b) reduction of tellurite to tellurium produces a black coloration. The egg-yolk reaction and tellurite reduction usually occur together with a positive coagulase reaction and thus can serve as an index for the latter. According to EN ISO 6888-1, the addition of sulfamethazine is advised to suppress the growth and swarming of Proteus sp., if these are suspected in the test sample.

애플리케이션

GranuCult^® Baird-Parker agar (base) is used for the isolation, presumptive identification, and enumeration of Staphylococcus aureus from food and animal feed as well as from other materials.

결합

Replaces: 1.05406.5007

분석 메모

Appearance (clearness): clear to turbid
Appearance (color): yellowish-brown
pH-value (25 °C): 6.6 - 7.0
Solidification behaviour (2 hrs., 45 °C): liquid
Growth promotion test in accordance with the current version of DIN EN ISO 11133.
Inoculum on reference medium (Staphylococcus aureus ATCC 6538 (WDCM 00032)):
Inoculum on reference medium (Staphylococcus aureus ATCC 25923 (WDCM 00034)):
Colony count (Staphylococcus aureus ATCC 6538 (WDCM 00032)):
Colony count (Staphylococcus aureus ATCC 25923 (WDCM 00034)):
Recovery on test medium (Staphylococcus aureus ATCC 6538 (WDCM 00032)): ≥ 50 %
Recovery on test medium (Staphylococcus aureus ATCC 25923 (WDCM 00034)): ≥ 50 %
Growth (Escherichia coli ATCC 8739 (WDCM 00012)): no growth
Growth (Escherichia coli ATCC 25922 (WDCM 00013)): no growth
Growth (Staphylococcus saprophyticus ATCC 15305 (WDCM 00159)): no limit
Growth (Staphylococcus epidermidis ATCC 12228 (WDCM 00036)): no limit
Growth (Enterococcus hirae ATCC 8043 (WDCM 00089)): no limit
Growth (Proteus mirabilis ATCC 29906 (WDCM 00023)): no limit
Colonies (Staphylococcus aureus ATCC 6538 (WDCM 00032)): Black or grey colonies with clear halo
Colonies (Staphylococcus aureus ATCC 25923 (WDCM 00034)): Black or grey colonies with clear halo
Colonies (Staphylococcus saprophyticus ATCC 15305 (WDCM 00159)): Black or grey colonies without clear halo
Colonies (Staphylococcus epidermidis ATCC 12228 (WDCM 00036)): Black or grey colonies without clear halo
Colonies (Enterococcus hirae ATCC 8043 (WDCM 00086)): Black or grey colonies without clear halo
Colonies (Proteus mirabilis ATCC 29906 (WDCM 00023)): Brown or black colonies without clear halo
Incubation:
24 ± 2 to 48 ± 2 hours at 37 ± 1 °C aerobic
E.coli 48 ± 2 hours at 37 ± 1 °C aerobic
A recovery rate of 50 % is equivalent to a productivity value of 0.5.
The indicated colony counts result from the sum of a triple determination.
Reference media: Tryptic Soy Agar

기타 정보

The prepared medium is clear to turbid and yellowish-brown.

각주

We offer two media types: the superior granulated GranuCult^® and the cost-efficient powdered NutriSelect^® culture media, depending on your needs.
The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.

법적 정보

GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany

NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany

안전성 정보

• 픽토그램: GHS07
• 신호어: Warning
• 유해 및 위험 성명서: H317 - H319
• 예방조치 성명서: P261 - P264 - P272 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Skin Sens. 1
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3