2. LESSON LEARNING OUTCOMES
• Identify the types of specimen from which DNA and RNA can be
isolated for further analysis
• Explain the steps involved in NA extraction
• Differentiate between the different methods of NA extraction
3. Purpose of NA Isolation?
Good yield [ ] of DNA
Good quality/pure free from
contamination
7. Phenol-Chloroform-Isoamyl-Alcohol Method
Continues… (DNA precipitation)
Add Chloroform-isoamyl alcohol
Sodium Acetate
Add Ice Cold Isopropanol/Ethanol
Store DNA in Tris EDTA buffer
Store @ 4°C, -20°C or -80°C
Spin and mix
Spin and mix
9. END OF LESSON QUIZ
What is the role of the following chemicals in NA extraction?
• EDTA
• Tris
• SDS
• Phenol
• Chlorophorm
• Proteinase K
• Sodium acetate
• Isopropanol
10. Next Lesson….
• Inorganic extraction method (spin column)
• Quantitative and Qualitative Analysis of DNA Yield and Purity