Potato Dextrose/W Ampicillin Sodium Salt
Catalog No.: DCP-PDAPAS
Features:
Uses: Detection of fungi or bacteria in food, dairy, cosmetic, and environmental samples
pH: 5.6 ± 0.2
Size: 100 mm
Concentration: 50 µg/mL
Storage: Keep away from light at 2–8°C
Shipping Condition: Blue ice
Appearance: yellow clear to slightly opalescent
Sterile
Shelf life: 2 weeks
*All agar plates are manufactured with ultrapure water, deionized and demineralized to minimize ionic and organic contaminants. The premium ISO certified agar solution is sterilized by a full cycle of autoclaving. Each 100mm plate has 20mL of agar medium in premium plastic dish.
Description:
Potato Dextrose Agar (PDA) plates with ampicillin are a selective fungal medium intended to support robust growth of yeasts and molds while inhibiting many co-present bacteria through the action of a beta-actam antibiotic. PDA consists of potato infusion/extract, dextrose, and agar, creating a carbohydrate-rich, slightly acidic environment that promotes luxuriant mycelial growth, sporulation, and pigment production in a broad range of environmental, food, and cosmetic yeasts and molds.
Ampicillin is a beta-lactam antibiotic that targets bacterial cell wall synthesis by binding penicillin-binding proteins, leading to lysis in susceptible bacteria, especially many gram-positive and some gram-negative species. When ampicillin is incorporated into PDA (commonly on the order of tens of µg/mL), it suppresses growth of susceptible bacteria, reducing bacterial background without significantly affecting most filamentous fungi and yeasts, which lack peptidoglycan cell walls. The intrinsic properties of PDA (nutrient profile and mildly acidic pH) already favor fungal growth over many bacteria; adding ampicillin further decreases bacterial colony formation on the plate, making fungal colonies easier to detect, count, and subculture from mixed samples.
* This product is manufactured under ISO 13485-certified and CE-approved facilities (Suppliers of DiagnoCine Precision). All final packaging, quality assurance, and testing are done at the DiagnoCine R&D and Quality Testing Center. All specific customization requests and assembly were accomplished at DiagnoCine Precision in Totowa, New Jersey, USA
