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Deoxycholate Citrate Agar 100g

Deoxycholate Citrate Agar 100g
Deoxycholate Citrate Agar 100g

Deoxycholate Citrate Agar 100g Specification

  • Size
  • 100g
  • Storage Instructions
  • Room Temperatutre
  • Packaging Type
  • Plastic Bottle
  • Physical State
  • Powder
  • Molecular Formula
  • N/A complex mixture
  • Boiling point
  • N/A
  • Usage
  • Laboratory
  • Molecular Weight
  • N/A complex mixture Grams (g)
  • CAS No
  • N/A complex mixture
  • Purity
  • N/A performance-tested culture medium
  • Shelf Life
  • 12 Months
  • Density
  • N/A Gram per cubic centimeter(g/cm3)
  • Flash Point
  • N/A
  • Melting Point
  • N/A
  • Ph Level
  • 7.10 7.50
  • Grade
  • Microbiological / bacteriological culture-medium grade
  • Type
  • Scientific Lab Chemicals
  • Application
  • Laboratory
  • Appearance
  • Cream to yellow, homogeneous, free-flowing powder
  • Purity(%)
  • N/A performance-tested culture medium
  • Colour
  • Pink
  • Storage condition
  • Cool, dry place
  • Recommended volume
  • 23.5g per litre
  • Standard
  • CLSI recommended
  • Microbial testing
  • Salmonella, Shigella
  • Expiry format
  • Month/Year
  • Container type
  • Opaque plastic
  • Solubility
  • Freely soluble in water
 

Deoxycholate Citrate Agar 100g Trade Information

  • Minimum Order Quantity
  • 10 Pieces
  • Delivery Time
  • 5 Days
  • Main Domestic Market
  • All India
 

Deoxycholate Citrate Agar 100g About

Deoxycholate Citrate Agar (DCA) is a selective and differential growth medium used primarily to isolate and identify enteric pathogens like Salmonella and Shigella species from clinical and food samples
Principle and Composition
  • Selectivity: Sodium deoxycholate at pH 7.3 to 7.5 is inhibitory for gram-positive bacteria. Citrate salts, in the concentration included in the formulation, are inhibitory to gram-positive bacteria and most other normal intestinal organisms. This allows enteric pathogens to grow while suppressing background flora.
  • Differentiation: It contains lactose and the pH indicator neutral red. Lactose helps in differentiating enteric bacilli (lactose fermenters produce red/pink colonies while lactose non-fermenters produce colorless colonies). 
  • Hydrogen Sulfide (HS) Detection: Ferric ammonium citrate is included to detect HS production; organisms that produce it form colonies with black centers
  • Colony Characteristics
    • Salmonella: Form colorless colonies, typically with prominent black centers due to HS production.
  • Shigella: Form colorless or transparent colonies without black centers.
  • Lactose fermenters (e.g., E. coli): Mostly inhibited, but if they grow, they appear pink with a precipitated bile halo
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