DBCO-PEG4-C3-sulfonic acid serves as a bifunctional PEG linker. The DBCO click chemistry handle conjugates with azides on target molecules to form stable triazole linkages. The sulfonic acid can participate in esterification, halogenation and displacement reactions.
DBCO-PEG4-C3-sulfonic acid serves as a bifunctional PEG linker. The DBCO click chemistry handle conjugates with azides on target molecules to form stable triazole linkages. The sulfonic acid can participate in esterification, halogenation and displacement reactions.
Intended Use
For the isolation of Listeria spp. from food and environmental specimens.
Principle and Interpretation
Tryptone, proteose peptone, meat extract, yeast paste powder provide nitrogen sources, vitamins, amino acids, and growth factors; sodium chloride can maintain a balanced osmotic pressure; sodium dihydrogen phosphate and potassium dihydrogen phosphate as buffering agents; aesculin are fermentable sugars; lithium chloride and other antibiotics can inhibit Gram negative bacteria and most Gram positive bacteria.
Formulation
| Ingredients | /liter |
| Enzymatic Digest of Animal Tissues | 5.0g |
| Enzymatic Digest of Casein | 5.0g |
| Meat extract | 5.0g |
| Yeast extract | 5.0g |
| Sodium chloride | 20.0g |
| Disodium hydrogen phosphate dihydrate | 12.0g |
| Potassium dihydrogen phosphate | 1.35g |
| Aesculin | 1.0g |
| Lithium chloride | 3.0g |
| pH7.2±0.2 at 25°C | |
Preparation
Dissolve 57.4g in 1 litre of distilled water. Mix well and distribute into final containers. Sterilize by autoclaving at 121°C for 15 minutes. Then cool to 50°C，and add one Supplement(SR0120) per 225mL of base to prepare Half-Fraser Broth.
Quality Control
Cultural characteristics observed after incubation at 29-31°C for 22~26 hours
| Quality control strains | Growth | Characteristics |
| Listeria monocytogenes ATCC19115 | >20 cfu On PALCAM | Gray to black colony count with black halo |
| Escherichia coli ATCC25922 | < 100 colonies on TSA | Inhibition |
| Enterococcus faecalis ATCC29212 |
Storage and Shelf Life
2-30℃，Keep container tightly closed, avoid direct sunlight.
Use before expiry date on the label.
Precautions
1. When weighing the dehydrated medium, please wear masks to avoid causing respiratory system discomfort
2. Keep container tightly closed after using to prevent clumping.
Waste Disposal
Microbiological contamination was disposed by autoclaving at 121°C for 30 minutes.
Intended Use For the isolation of Listeria spp. from food and environmental specimens. Principle and Interpretation Tryptone, proteose peptone, meat extract, yeast paste powder provide nit……
Bis-propargyl-PEG3 is a crosslinker with alkyne groups at both ends of the molecule. The alkyne groups react with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry to form a stable triazole linkage. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Bis-propargyl-PEG3 is a crosslinker with alkyne groups at both ends of the molecule. The alkyne groups react with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry to form a stable triazole linkage. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Norgen’s CleanAll DNA/RNA Clean-Up and Concentration Micro Kit provides a rapid method for the purification, cleanup and concentration of RNA or DNA from different isolation methods or upstream applications. The kit can be used as an alternative to organic extraction and ethanol precipitation to clean up various enzymatic reactions.
The CleanAll Kit purifies RNA from phenol/guanidine-based protocols or from various upstream enzymatic reactions such as DNase treatment, labeling and in vitro transcription. Furthermore, endotoxins can be removed from previously purified RNA solutions.
The kit can be used to clean up DNA from digestions, ligations, PCR reactions, labeling reactions, DNA modification reactions and staining. The kit also provides a protocol for the rapid removal of endotoxins from previously purified DNA down to 0.1 EU/µg DNA or less.
Purify all sizes of RNA, from large mRNA and ribosomal RNA down to microRNA (miRNA) and small interfering RNA (siRNA).
Purify all sizes of DNA, from small PCR products, native or linearized plasmids, to genomic DNA. Using an alternative protocol, even oligonucleotides and smaller DNA fragments can be purified.
Figure 1 / 2
Click for expanded view
| Kit Specifications | |
| Column Binding Capacity | 50 μg RNA 10 μg DNA |
| Maximum Column Loading Volume | 600 μL |
| Minimum Elution Volume | 20 μL |
| Time to Complete 10 Purifications | 20 minutes |
| Size of RNA Purified | All sizes, including small RNA (<200) |
| Size of DNA Purified | ≥ 100 bp* |
| Average Recovery | ≥90% for RNA ≥90% for DNA 100 bp to 10 kbp ≥75% for DNA ≥ 10 kbp |
* Applicable to smaller fragments or oligonucleotides with alternative protocol
Storage Conditions and Product Stability
All solutions should be kept tightly sealed and stored at room temperature. This kit is stable for 2 years from the date of shipment.
| Component | Cat. 23800 (50 preps) |
|---|---|
| Binding Buffer H | 60 mL |
| Wash Solution K | 27 mL |
| Elution Buffer L | 15 mL |
| Micro Spin Columns | 50 |
| Collection Tubes | 50 |
| Elution Tubes (1.7 mL) | 50 |
| Product Insert | 1 |
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