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Merck
CN

70139

马铃薯右旋糖琼脂

NutriSelect® Plus, according to USP, FDA, APHA, powder, for bacteria, pack of 100 g, pack of 500 g, pack of 2.5 kg

别名:

马铃薯葡萄糖琼脂

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NACRES:
NA.74
UNSPSC Code:
41171605

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产品名称

马铃薯右旋糖琼脂, NutriSelect® Plus, according to USP, FDA, APHA, powder, for bacteria, pack of 100 g, pack of 500 g, pack of 2.5 kg

agency

APHA
USP
according to USP

reg. compliance

FDA

sterility

non-sterile

form

powder

shelf life

limited shelf life, expiry date on the label

composition

agar, 15 g/L
dextrose, 20 g/L
potato extract, 4 g/L

packaging

pack of 100 g
pack of 2.5 kg
pack of 500 g

manufacturer/tradename

NutriSelect® Plus

technique(s)

microbiological culture: suitable

color

light yellow

final pH

5.6±0.2 (25 °C)

application(s)

agriculture
bioburden testing
environmental
food and beverages
microbiology

suitability

bacteria
nonselective for Aspergillus spp.
nonselective for Candida spp.
nonselective for Penicillium spp.
nonselective for Pichia spp.
nonselective for Saccharomyces spp.
nonselective for Zygosaccharomyces spp.
nonselective for molds (General Media)
nonselective for yeasts (General Media)

Quality Level

200

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Other Notes

酵母引起的酸奶污染研究；用于维持胞外脂肪酶生产中的粘红酵母原种培养；鉴定感染洋葱组织中的黑曲霉
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.

Application

Potato Dextrose Agar is used for the isolation and enumeration of yeasts and molds in dairy and food products. The media is also used for stimulating sporulation, maintaining stock cultures of certain dermatophytes, and as a differential media for certain varieties of dermatophytes on the basis of pigment production.

Features and Benefits

NutriSelect® Plus are powdered culture media offering
  • Quality control with growth promotion test according to industry standards
  • Quality assurance acc. to ISO 9001
  • Cost-efficient powdered media

General description

Potato Dextrose Agar is recommended for the isolation and enumeration of yeasts and molds in dairy and food products. Potato extract serves as a source of carbon, nitrogen, minerals, vitamins, and other essential growth nutrients. Dextrose acts as a source of carbohydrates. Agar is the solidifying agent. The accompanying bacterial flora is suppressed by the low pH of 3.5. The growth of yeasts and molds is promoted in this medium, and the fungi develop typical morphology. The addition of Rose Bengal further suppresses the growth of bacteria and restricts the size and spreading of mold colonies.

Preparation Note

Suspend 39 g in 1 litre of distilled water. Bring to the boil to dissolve completely. Sterilize by autoclaving at 121°C for 15 minutes. In order to suppress bacterial growth, 1 ml of 10% sterile lactic acid can be added for dropping pH to 3.5. Mix well before pouring.

Legal Information

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

存储类别

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

法规信息

动植物来源培养基
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历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
BCCN6080
BCCN6081
BCCN1287
BCCN1286
BCCM3771

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R.E. Beever et al.
Journal of General Microbiology, 60, 273-273 (1970)
M. Dublin Green et al.
Journal of Food Protection, 50, 193-193 (1987)
D. Papaparaskevas et al.
Biotechnology Letters, 14, 397-397 (1992)
A. Behere et al.
Enzyme and Microbial Technology, 15, 158-158 (1993)
Julia Schumacher et al.
Eukaryotic cell, 7(4), 584-601 (2008-02-12)
Recently, we showed that the alpha subunit BCG1 of a heterotrimeric G protein is an upstream activator of the Ca(2+)/calmodulin-dependent phosphatase calcineurin in the gray mold fungus Botrytis cinerea. To identify the transcription factor acting downstream of BCG1 and calcineurin
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Yeast and Molds in Food and Beverages

Yeast is one of the most important microorganisms known and utilised by mankind. Ancient Middle Eastern civilisations used the organism to bake bread and to produce mead, beer and wine.

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