Hi, 

Are you able to use DNA extraction kit for bacteria? In many cases of DNA extraction using "preassembled kits", might give you low quality of DNA. So, if your purpose is to obtain good yield of DNA from the extraction process, I highly recommend you to try the DNA extraction kit if it is affordable for you.  

We always use the CTAB extraction method.

Hi : there are a lot of DNA extraction protocols, you must select the protocol that same people use it for that same sample that you extract DNA from,

To get a good quality of DNA the best thing is to use phenol : chloroform ,

Y149

Yes, is difficulte

Thank you very much for suggestions. I have used CTAB method and it works.

Thanks Dianna.