What is a plasmid maxiprep?

A plasmid maxiprep is a laboratory technique used to isolate and purify a large amount of plasmid DNA from bacterial cultures on a large scale. It is a step up from the smaller scale miniprep and midiprep methods. The maxiprep procedure typically involves similar steps to the midiprep, such as bacterial cell lysis, removal of cellular debris, and purification of the plasmid DNA. However, the maxiprep yields a significantly higher quantity of plasmid DNA, usually in the range of several hundred micrograms to milligrams, making it suitable for applications that require a large amount of pure plasmid DNA, such as large-scale cloning, protein production, or viral vector production.

Video: KingFisher PlasmidPro Maxi Processor

Easy and efficient plasmid purification at the press of a button.


When to use a plasmid DNA maxi kit?

A maxiprep scale kit should be used when attempting to purify plasmid from an overnight bacterial culture with a volume between 100–500 mL. When choosing a plasmid maxiprep kit, scientists should prioritize high-quality plasmid DNA that is pure, intact, and free from contaminants. This is crucial for helping ensure reliable and reproducible results in downstream applications, helping instill confidence in the experimental outcomes.

The KingFisher PlasmidPro Maxi Processor is designed to help simplify the maxi scale plasmid purification process—from sample loading to elution. Simply pour in your culture and press start. In under 75 minutes, this innovative system efficiently executes all important purification steps to deliver endotoxin-free, high-quality plasmid DNA without manual steps or centrifugation.

The Thermo Fisher Scientific GeneJET Plasmid Maxiprep Kit allows for efficient isolation of high-quality plasmid DNA from bacterial cultures, recovering up to 400 μg per prep. With a fast 60-minute procedure and a convenient spin column format, this kit offers high yields and concentrations, making it suitable for various molecular biology procedures.

The PureLink HiPure Plasmid Maxiprep Kit isolates transfection-grade plasmid DNA from E. coli, yielding up to 1 mg of highly pure DNA. With no extra steps required to remove contaminants, this kit can help save time and labor. It is versatile, suitable for purifying various types and sizes of plasmid DNA, including BAC, bacmids, and ssM13 DNAs.

Use the table below to help you choose the right solution for your plasmid DNA maxiprep.

 Hands-free, centrifugation-free maxi scale automationRapid purification with integrated lysate clarification filter and precipitatorRapid purification with integrated lysate clarification filterMost widely accepted protocol for transfectionRapid and cost-effective manual purification
 KingFisher PlasmidPro Maxi Processor Endotoxin-Free CartridgePureLink HiPure FP (Filter and Precipitator) Maxiprep KitPureLink HiPure Plasmid Filter Maxiprep KitPureLink HiPure Plasmid Maxiprep KitGeneJET Plasmid Maxiprep Kit
Purity gradeAdvanced-transfectionTransfectionTransfectionTransfectionMolecular
Endotoxin level (EU/μg)<0.10.1–10.1–10.1–1>10
Total protocol time<75 min60 min90 min<120 min60 min
YieldUp to 1 mgUp to 1 mgUp to 1 mgUp to 1 mgUp to 400 μg
Sample throughputLowLowLowLowLow
TechnologyAnion-exchange membraneAnion-exchange resinAnion-exchange resinAnion-exchange resinSilica column
MethodMembrane filterFilter columnResin filterResin filterSpin column
Prep size1 prep10, 25 preps10, 25 preps10, 25 preps10, 25 preps

Products sorted by Endotoxin level from lowest EU/µg to highest associated with purity grade.


How-to videos on plasmid maxi prep

How to purify transfection grade plasmid DNA
 

Learn how to purify transfection grade plasmid DNA with the Invitrogen PureLink HiPure Plasmid Filter Maxiprep Kit.

How to purify advanced-transfection grade plasmid DNA through automated system

Learn how to operate the KingFisher PlasmidPro Maxi Processor to purify advanced-transfection grade plasmid DNA with a pre-filled maxi prep cartridge.

Resources
  • Protocol Videos—Videos to help you isolate nucleic acids using a variety of techniques.
  • DNA & RNA Selection Guide—Find the right purification products.
  • Videos—View our library of DNA & RNA purification and analysis videos.
  • Application Notes—Explore our application notes from scientists sharing data for isolation products
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