Potato Dextrose Agar Plates/W Penicillin G
Catalog.No:DCP-PDAPPG
Features:
Uses: Detection of fungi or bacteria in food, dairy, cosmetic, and environmental samples
pH: 5.6 ± 0.2
Size: 100 mm
Concentration: 100 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 penicillin G are a selective fungal medium designed to promote vigorous growth of yeasts and molds while inhibiting many co-present bacteria via a beta-lactam antibiotic. PDA contains potato infusion/extract, dextrose, and agar, giving a carbohydrate-rich, slightly acidic environment (around pH 5.4–5.8) that supports luxuriant mycelial growth, sporulation, and pigment production in a wide range of environmental, food, and cosmetic yeasts and molds. The potato component supplies complex nutrients and growth factors; dextrose provides an easily metabolized carbon source; agar forms a firm gel that allows clear colony isolation and morphology assessment
Penicillin G is a beta-lactam antibiotic that targets bacterial cell wall synthesis by binding penicillin-binding proteins, leading to lysis of susceptible bacteria, especially many gram-positive and some gram-negative species. When incorporated into PDA at an appropriate concentration (commonly in the tens of µg/mL range as part of a penicillin-streptomycin–type cocktail), penicillin G suppresses growth of susceptible bacteria, reducing bacterial background without significantly affecting most filamentous fungi and yeasts, which lack peptidoglycan cell walls.
PDA’s mildly acidic pH and nutrient profile already favor fungal growth over many bacteria; adding penicillin G further decreases bacterial colony formation, making fungal colonies easier to detect, enumerate, 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
