Preservative Resistant Yeast Broth MHA00PRY2

eCl@ss:	32160801
NACRES:	NA.74

Preservative Resistant Yeast broth is used for the detection of preservative resistant yeasts in water and beverage testing using the membrane filtration method. PRY Broth is a selective medium with a low pH used for the detection of spoilage microorganisms in beverages and water testing. It is used to selectively isolate and enumerate Zygosaccharomyces species.{16} The medium prevents growth of other yeasts such as Saccharomyces cerevisiae that are tolerant to lower levels of commonly used food preservatives. Spoilage resulting from growth of the yeast Zygosaccharomyces is widespread, which has caused significant economic losses to the food industry. Yeast extract in the medium provides the essential nutrients, while mannitol acts as source of fermentable carbohydrate and the Colonies appear yellow.
PRY Broth is a low pH selective medium for the detection of spoilage microorganisms in beverages, Beer, Bottled Water, Cider, Soft Drink, Sport Drink and Wine. The media finds its application in Clinical, Cosmetics, Environmental Analysis, Food and Beverage and Industrial QC.
50 pk in 2 mL plastic ampoules
2 mL plastic ampoules
Incubation Temperature: 30 °C
Incubation Time: 24–48 hrs
Preservative Resistant Yeast
QC organisms
Z. bailii (ATCC 58445)
Colonies appear yellow
Target Microorganisms: Yeast, preservative resistant
MICROFIL is a registered trademark of Merck KGaA, Darmstadt, Germany
MICROPRESURE is a registered trademark of Merck KGaA, Darmstadt, Germany
MILLIFLEX is a registered trademark of Merck KGaA, Darmstadt, Germany

storage conditions	2 to 10 °C
Quality Level	100,
form	liquid
shelf life	9 mo.
feature	ready-to-use
packaging	pkg of 2 mL Ampoule, pack of 50 tests
application(s)	bioburden testing: suitable, microbiology: suitable, water monitoring: suitable
color	clear medium amber to yellow, yellow to colorless
input	sample type beer sample type soft drink sample type beverage(s) sample type beverage(s) sample type cider sample type bottled water sample type cosmetics sample type food(s) sample type sport drink sample type wine
pH	3.6±0.2 (25.0 °C)
Featured Industry	Clinical Cosmetics Environmental Food and Beverages Industrial QC (microbial monitoring)
compatibility	for use with MF-method, for use with Microfil®, for use with MicropreSure®, for use with Milliflex®
shipped in	wet ice
storage temp.	2-8°C
suitability	yeasts

WGK Germany	WGK 1
Flash Point F	Not applicable
Flash Point C	Not applicable