70139

马铃薯右旋糖琼脂

NutriSelect^® Plus, suitable for microbiology

• 别名: 马铃薯葡萄糖琼脂
• 分類程式碼代碼: 41171605
• NACRES: NA.74

属性

• agency: APHA; USP
• 品質等級: 200
• 法律遵循: FDA
• 無菌: non-sterile
• 形狀: powder
• 儲存期限: limited shelf life, expiry date on the label
• 成份: agar, 15 g/L ; dextrose, 20 g/L ; potato extract, 4 g/L
• 包裝: pkg of 100 g; pkg of 2.5 kg; pkg of 500 g
• 製造商／商標名: NutriSelect^® Plus
• 技術: microbiological culture: suitable
• 顏色: light yellow
• 最終pH值: 5.6±0.2 (25 °C)
• 應用: agriculture; bioburden testing; environmental; food and beverages; microbiology
• 適合性: 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)

说明

一般說明

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.

應用

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.

特點和優勢

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

準備報告

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.

其他說明

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

腳註

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.

法律資訊

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

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

安全信息

• 儲存類別代碼: 11 - Combustible Solids
• 水污染物質分類（WGK）: WGK 3
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable
• 個人防護裝備: Eyeshields, Gloves, type N95 (US)