This kit provides a rapid spin column method for the isolation and purification of genomic DNA from both Gram-negative and Gram-positive bacteria in milk samples. It can also be used to process challenging milk samples such as Mastitic milk for example. The kit is highly sensitive and can isolate DNA from a cell density of as little as 10 bacteria contained in 1 mL of milk. Genomic DNA is isolated in 45 minutes, free of inhibitors and ready for any number of downstream applications including PCR, qPCR and Southern Blot analysis, sequencing and more.
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| Kit Specifications | |
| Maximum Milk Input | 1 mL |
| Time to Complete 10 Purifications | 1 hour |
| DNA Yield* | 500 ng to 8 μg |
| Bacteria Species Processed | Gram positive and Gram negative |
| Minimum Detection Limit | 10 bacteria in 1 mL of milk |
*The range of the DNA yield will vary depending upon a number of factors including bacterial species and type of milk (fat content and %)
Storage Conditions and Product Stability
All solutions should be kept tightly sealed and stored at room temperature. The Lysozyme should be stored at -20°C upon arrival, and the Resuspension Solution A should be stored at -20°C after addition of the lysozyme. The lyophilized Proteinase K should be stored at -20°C upon arrival and after reconstitution. This kit is stable for 1 year from the date of shipment.
| Component | Cat. 21550 (50 preps) |
|---|---|
| Resuspension Solution A | 6 mL |
| Buffer SK | 60 mL |
| Wash Solution A | 18 mL |
| Elution Buffer B | 15 mL |
| Proteinase K | 12 mg |
| Lysozyme (powder) | 120 mg |
| Spin Columns | 50 |
| Collection Tubes | 50 |
| Elution Tubes (1.7 mL) | 50 |
| Product Insert | 1 |
DBCO-C2-alcohol is a linker containing a DBCO moiety and a terminal primary hydroxyl group. DBCO group can react with azides in copper-free Click Chemistry reactions. The hydroxyl can react with a variety of functional groups. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
DBCO-C2-alcohol is a linker containing a DBCO moiety and a terminal primary hydroxyl group. DBCO group can react with azides in copper-free Click Chemistry reactions. The hydroxyl can react with a variety of functional groups. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
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Usages:
For selective isolation of Gram-negative bacteria, especially for Shigella and Salmonella.
Principle:
Yeast extract powder provide nitrogen, vitamins, growth factors; sodium chloride to maintain osmotic equilibrium ferric ammonium citrate of iron salts to produce a black iron sulfide; agar as medium coagulant; phenol red as pH indicator.
Formulation（per liter）:
Xylose 3.50g
L-Lysine 5.00g
Lactose 7.50g
Sucrose 7.50 g
Sodium Chloride 5.00 g
Yeast Extract 3.00g
Sodium Desoxycholate 2.50g
Sodium Thiosulphate 6.80g
Fe-Ammonium Citrate 0.80g
Phenol Red 0.08g
Agar 13.50
Final PH 7.4±0.2
How to use:
1.Suspend 55.2g in 1Lof distilled or deionized water. Heat with frequent agitation and boil to completely dissolve the powder. Do not autoclave ,cool to 50℃ and pour into sterile petri dishes.
2.Dilluted and treated samples.
Quality control:
Quality control strains were inoculated ,and cultured at 36 ± 1 ℃ for 24h ,results show as follows:
strain name strain code growth feature
Arizona bacteria CMCC (B) 47001 good black colonies
Salmonella typhimurium CMCC (B) 50115 good black colonies
Streptococcus faecalis CMCC32223 prohibited —
Storage: Store in a dark, cool and dry place, tighten the cap immediately after use. Storage period of three years.
Specifications: 250g/bottle
250g