Protocol: Phenol-Chloroform Extraction of Prokaryotic DNA | Step-by-Step Laboratory Method
Protocol: Phenol-Chloroform Extraction of Prokaryotic DNA
In this video, we demonstrate the phenol-chloroform extraction method for isolating high-quality prokaryotic genomic DNA. This classical molecular biology technique is widely used for DNA purification due to its reliability, high yield, and effectiveness in removing proteins and cellular contaminants.
What You'll Learn:
✅ Principle of phenol-chloroform extraction
✅ Bacterial cell lysis and sample preparation
✅ Phase separation and DNA recovery
✅ DNA precipitation and purification
✅ Critical precautions and troubleshooting tips
✅ Applications in PCR, cloning, sequencing, and genomics
Protocol Overview:
Bacterial cell lysis
Addition of phenol:chloroform mixture
Mixing and centrifugation
Recovery of aqueous DNA-containing phase
DNA precipitation
Washing and resuspension of purified DNA
Applications:
Genomic DNA extraction
PCR analysis
DNA sequencing
Molecular cloning
Microbial genomics
Research and teaching laboratories
⚠️ Safety Note: Phenol and chloroform are hazardous chemicals. Always work in a fume hood and wear appropriate personal protective equipment (PPE).
If you found this protocol helpful, please Like, Share, and Subscribe for more molecular biology, microbiology, biotechnology, and laboratory protocol videos.
#DNAExtraction #PhenolChloroform #ProkaryoticDNA #BacterialDNA #MolecularBiology #Biotechnology #Microbiology #GenomicDNA #LabProtocol #PCR #DNAIsolation #ResearchLab