Dynabeads™ MAX EPEC/VTEC O45 Kit
Dynabeads™ MAX EPEC/VTEC O45 Kit
Applied Biosystems™

Dynabeads™ MAX EPEC/VTEC O45 Kit

The Dynabeads MAX EPEC/VTEC O45 Kit allows for the rapid, selective concentration of E. coli O45 serogroup bacteria in foodRead more
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Catalog NumberQuantity
A14683200 Reactions
A14631100 Reactions
Catalog number A14683
Price (CNY)
-
Quantity:
200 Reactions
The Dynabeads MAX EPEC/VTEC O45 Kit allows for the rapid, selective concentration of E. coli O45 serogroup bacteria in food and environmental samples to improve downstream detection via PCR or culture methods.

• Improve detection sensitivity in PCR sample analysis
• Reduce background in selective agar detection
• Perform the method manually or automate using the Thermo Scientific KingFisher mL Food Protection Purification System

Improve Sensitivity and Reduce Background
Highly specific antibodies attached to paramagnetic beads are incubated with an aliquot of pre-enriched sample. The beads bind and concentrate the target bacteria from non-target organisms. Washing steps help limit the carryover of inhibitors and matrix-associated particulates. These steps combine to improve the sensitivity of PCR-based detection while reducing background for plating methods.

Manual or Automated Processing
The immunomagnetic separation (IMS) steps can be performed manually with magnets and mixers or automated using the Thermo Scientific KingFisher mL Food Protection Purification System.

Sensitivity
Following the Dynabeads MAX EPEC/VTEC O45 protocol, the presence or absence of one viable E. coli O45 can be determined in the sample sizes described if this one E. coli cell is able to replicate and is not masked by resident background flora.
For Testing of Food and Environmental Samples Only.
Specifications
For Use With (Equipment)Dynabeads™ MPC™, KingFisher mL Food Protection Purification System
Prep Scale150 μL output (automated prep), 100 μL output (manual prep)
Product LineDynabeads™
Quantity200 Reactions
Product TypeEPEC/VTEC Kit
Unit SizeEach
Contents & Storage
Store in refrigerator (2–8°C). DO NOT FREEZE.

Frequently asked questions (FAQs)

What are Dynabeads magnetic beads?

Dynabeads magnetic beads are uniform, non-porous, superparamagnetic, monodispersed and highly cross-linked polystyrene microspheres consisting of an even dispersion of magnetic material throughout the bead. The magnetic material within the Dynabeads magnetic beads consists of a mixture of maghemite (gamma-Fe2O3) and magnetite (Fe3O4). The iron content (Fe) of the beads is 12% by weight in Dynabeads magnetic beads M-280 and 20% by weight in Dynabeads magnetic beads M-450. The Dynabeads magnetic beads are coated with a thin polystyrene shell which encases the magnetic material, and prevents any leakage from the beads or trapping of ligands in the bead interior. The shell also protects the target from exposure to iron while providing a defined surface area for the adsorption or coupling of various molecules.

Uniformity of bead size and shape provides consistent physical and chemical properties. These uniform physical characteristics lead to high-quality, reproducible results.

The Dynabeads magnetic beads are available in three different sizes: 4.5 µm (M-450 beads), 2.8 µm (M-270/M-280 beads) and 1 µm (MyOne beads).

Find additional tips, troubleshooting help, and resources within our Dynabeads Nucleic Acid Purification Support Center as well as our Protein Immunoprecipitation (IP), Co-Immunoprecipitation (Co-IP), and Pulldown Support Center.

What are the benefits of the Dynabeads magnetic beads microbiology enrichment products?

Dynabeads magnetic beads microbiology enrichment products offer the following advantages:

Simple protocol
Cost effective
Shelf-stable reagents
Easy QC
High sensitivity
Saves time (for Salmonella in processed food, the assay is 24 hours faster compared to standard methods because immunomagnetic separation (IMS) replaces conventional selective enrichment; also saves time in confirmation procedure because you already have the colony isolated)

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

What do the designations M-280, M-270, and MyOne mean on Dynabeads magnetic beads?

The M stands for magnetic. M-280 refers to hydrophobic 2.8 micron beads, while M-270 refers to hydrophilic 2.8 micron beads. MyOne refers to 1 micron beads.

Find additional tips, troubleshooting help, and resources within our Dynabeads Nucleic Acid Purification Support Center as well as our Protein Immunoprecipitation (IP), Co-Immunoprecipitation (Co-IP), and Pulldown Support Center.

What is the detection limit when using Dynabeads magnetic beads for immunoprecipitation (IP)?

Answering this question is not straightforward. It will depend on the detection method. When using HRP (horseradish peroxidase)-based detection system or radioactivity in combination with a good antibody, very little target is required. More target is required when using an AP (alkaline phosphatase)-based detection system. When a sensitive detection system is used, detection will most likely be in the nanogram range. In some cases, pictograms of target can be detected.

Find additional tips, troubleshooting help, and resources within our Protein Immunoprecipitation (IP), Co-Immunoprecipitation (Co-IP), and Pulldown Support Center.

What is the elution volume when using Dynabeads magnetic beads for immunoprecipitation (IP)?

Within practical limits, the elution volume can be scaled up or down to suit your experiment. However, volumes less than 10 µL become more difficult to work with. In addition, the amount of target is important. If you have a lot of beads with a lot of bound target in a small elution volume, your elution may not be very efficient. Typically, 15-100 µL of beads may be eluted in 30 µL. For efficient recovery of the antigen and/or binding partners, the elution volume should at minimum equal the volume of the beads.

Find additional tips, troubleshooting help, and resources within our Protein Immunoprecipitation (IP), Co-Immunoprecipitation (Co-IP), and Pulldown Support Center.