[CK1000] Champion™ E. coli Transformation Kit, 200 Rxn
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Champion™ E. coli Transformation Kit provides an easy method for rapid preparation of chemically competent cells with high transformation efficiency from fresh culture, overnight culture, or even directly from bacterial colonies on the plate. The competent cell preparation method eliminates the requirement of time-wasting wash step. In addition, preparation of competent cells from overnight culture or directly from bacterial colonies provides flexibility to cloning experiment. The resultant competent cells can be immediately used or stored at -70°C for one year. This kit includes a specialized SMO-Broth™ medium and a unique Champion™ CC Buffer for culturing and preparing competent cells efficiently. Following the simple and quick competent cell preparation protocol from fresh culture, the transformation efficiency is typically ranged from 108–109 cfu/μg transformants/μg of pUC19 plasmid DNA, but varies depending on the E. coli strains. The resultant competent cells can be further transformed using time-saving transformation protocol, eliminating the requirement of heat-shock and recovery steps.
Detail
Description
Champion™ E. coli Transformation Kit provides an easy method for rapid preparation of chemically competent cells with high transformation efficiency from fresh culture, overnight culture, or even directly from bacterial colonies on the plate. The competent cell preparation method eliminates the requirement of time-wasting wash step. In addition, preparation of competent cells from overnight culture or directly from bacterial colonies provides flexibility to cloning experiment. The resultant competent cells can be immediately used or stored at -70°C for one year. This kit includes a specialized SMO-Broth™ medium and a unique Champion™ CC Buffer for culturing and preparing competent cells efficiently. Following the simple and quick competent cell preparation protocol from fresh culture, the transformation efficiency is typically ranged from 108–109 cfu/μg transformants/μg of pUC19 plasmid DNA, but varies depending on the E. coli strains. The resultant competent cells can be further transformed using time-saving transformation protocol, eliminating the requirement of heat-shock and recovery steps.
Features
Flexible– fresh culture, overnight culture, 4°C stored liquid culture or even colonies on agar plate can be used for transformation.
Fast and Easy– only few steps for preparation; suitable for time-saving transformation
High efficiency– up to 109 cfu/μg
Personalization– suitable for most E. coli strains
Kit Contents
Component
Volume
Champion™ CC Buffer
20 ml
SMO-Broth™
100 ml x 2
pUC19 Control Plasmid (10-4 μg/μl)
5 µl
Instruction Manual
1
Champion™ Competent Cell Preparation Card
1
Storage
4°C for 12 months
Other Products
Rapid Integrated Total Dietary Fiber Assay Kit
Product Info
Document
Product Info
K-RINTDF
SKU: 700004335
100 assays per kit
Content:
100 assays per kit
Shipping Temperature:
Ambient
Storage Temperature:
Short term stability: 2-8oC, Long term stability: See individual component labels
Stability:
> 2 years under recommended storage conditions
Analyte:
Dietary Fiber
Assay Format:
Enzymatic
Detection Method:
Gravimetric/HPLC
Signal Response:
Increase
Limit of Detection:
0.5 g/100 g
Total Assay Time:
~ 3 h work (over 1-2 days)
Application examples:
Food ingredients, food products and other materials.
Method recognition:
AACC Method 32-60.01, AOAC Method 2022.01, AOAC Method 2017.16, ICC Standard Method No. 185 and CODEX Method Type I
The Rapid Integrated Total Dietary Fiber Assay Kit method is validated under collaborative study (AACC Method 32-60.01, AOAC Method 2022.01, AOAC Method 2017.16, ICC Standard No. 185) and is recognized as a Type I Method by CODEX Alimentarius. The K-RINTDF method is the recommended one for the measurement of total dietary fiber in all foods that may or may not contain resistant starch. This method is updated to be more consistent with in vivo conditions in the human small intestine, i.e. a 4 h incubation time. Under these conditions more accurate measurement of resistant starch is obtained, including phosphate cross-liked starch (RS4). Use of higher enzyme concentrations ensures that resistant maltodextrins produced from non-resistant starch under the incubation conditions of the Integrated Total Dietary Fiber procedure (AOAC Methods 2009.01 and 2011.25) are no longer produced.
In this improved, rapid method, the incubation time with PAA + AMG is reduced to 4 h and the levels of both PAA and AMG are increased to ensure that resistant starch levels obtained with a set of control samples are consistent with ileostomy data. Under these conditions, the DF values obtained for most samples are the same as those obtained with AOAC Methods 2009.01 and 2011.25.
The dietary fiber fractions that are measured with this method are:
1. High Molecular Weight Dietary Fiber (HMWDF) including Insoluble Dietary Fiber (IDF) and High Molecular Weight Soluble Dietary Fiber (SDFP; soluble dietary fiber which is precipitated in the presence of 78% aqueous ethanol), and
2. Low Molecular Weight Soluble Dietary Fiber (SDFS; water soluble dietary fiber that is soluble in the presence of 78% aqueous ethanol).
Alternatively, IDF, SDFP and SDFS can be measured separately.
The enzymes used in this method are high purity and effectively devoid of contaminating enzymes active on other dietary fiber components such as β-glucan, pectin and arabinoxylan. They are supplied as freeze-dried powders; allowing the use of glycerol as an internal standard in the method.
* See McCleary, B. V., Sloane, N & Draga, A. (2015). Determination of total dietary fibre and available carbohydrates: a rapid integrated procedure that simulates in vivo digestion. Starch/Starke, 66, 1-24.
Validation of Methods
Advantages
More rapid measurement – incubation time with PAA + AMG reduced to 4 h in comparison with AOAC 2009.01 (increased levels of enzyme employed)
DF values for most samples are very similar to those obtained with AOAC Method 2009.01
Rapid Integrated Total Dietary Fiber method removes all of the limitations that have been identified with AOAC Method 2009.01*
All reagents stable for > 2 years after preparation
The method is consistent with the CODEX Alimentarius definition of dietary fiber
Mega-Calc™ software tool is available from our website for hassle-free raw data processing
Very competitive price (cost per test)
Document
The Rapid Integrated Total Dietary Fiber Assay Kit method is validated under collaborative study (AACC Method 32-60.01, AOAC Method 2022.01, AOAC Method 2017.16, ICC Standard No. 185) and is recognized as a Type I Method by CODEX Alimentarius. The K-RINTDF method is the recommended one for the measurement of total dietary fiber in all foods that may or may not contain resistant starch. This method is updated to be more consistent with in vivo conditions in the human small intestine, i.e. a 4 h incubation time. Under these conditions more accurate measurement of resistant starch is obtained, including phosphate cross-liked starch (RS4). Use of higher enzyme concentrations ensures that resistant maltodextrins produced from non-resistant starch under the incubation conditions of the Integrated Total Dietary Fiber procedure (AOAC Methods 2009.01 and 2011.25) are no longer produced.
Methyltetrazine-DBCO is a TCO reactive reagent containing a methyltetrazine group and a DBCO moiety. DBCO is commonly used for copper-free Click Chemistry reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Document
Methyltetrazine-DBCO is a TCO reactive reagent containing a methyltetrazine group and a DBCO moiety. DBCO is commonly used for copper-free Click Chemistry reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Free-circulating nucleic acids, such as tumor-specific extracellular DNA fragments and mRNAs in the blood or fetal nucleic acids in maternal blood, are present in serum or plasma usually as short fragments, <1000bp (DNA). HiPure Circulating DNA Midi Kit enables efficient purification of these circulating nucleic acids from human plasma, serum, or urine. The extracted products can be used for clinical in vitro detection.
Details
Specifications
Features
Specifications
Main Functions
Isolation circulating DNA from 1-5ml plasma, serum, body fluids using vacuum protocol
Applications
qPCR, liquid or solid chip analysis, hybridization and SNP detection, etc.
Purification method
Mini spin column
Purification technology
Silica technology
Process method
Manual (vacuum)
Sample type
Serum, plasma and other cell-free fluid samples
Sample amount
1-5ml
Elution volume
≥50μl
Time per run
≤60 minutes
Liquid carrying volume per column
4ml
Binding yield of column
1mg
Principle
This product is based on silica Column purification. The sample is lysed and digested with lysate and protease, DNA is released into the lysate. Transfer to an adsorption column. Nucleic acid is adsorbed on the membrane, while protein is not adsorbed and is removed with filtration. After washing proteins and other impurities, Nucleic acid was finally eluted with low-salt buffer.
Advantages
High yield – most optimal process, free DNA (>50bp) can be obtained to the maximum extent
High concentration – low elution volume, ensuring high nucleic acid concentration
High purity – low alcohol binding method, completely removing inhibitor and protein pollution
High recovery – DNA can be recovered at thelevel of PG by silica gel column purification
Kit Contents
Contents
IVD3182
Purification Times
50
Buffer ACL
250 ml
Buffer ACB*
300 ml
Buffer DCW1*
22 ml
Buffer DCW2*
10 ml
Proteinase K
540 mg
Protease Dissolve Buffer
30 ml
Carrier RNA
110 μg
Nuclease Free Water
20 ml
HiPure CFDNA Mini Columns
50
2 ml Collection Tubes
100
Extender Tube
50
Vac-Connector
50
Storage and Stability
Proteinase K, Carrier RNA should be stored at 2-8°C upon arrival. However, short-term storage (up to 12 weeks) at room temperature (15-25°C) does not affect their performance. The remaining kit components can be stored dry at room temperature (15-25°C) and are stable for at least 18 months under these conditions. The entire kit can be stored at 2-8°C, but in this case buffers should be redissolved before use. Make sure that all buffers are at room temperature when used.
Experiment Data
Document
Free-circulating nucleic acids, such as tumor-specific extracellular DNA fragments and mRNAs in the blood or fetal nucleic acids in maternal blood, are present in serum or plasma usually as short fragments,
