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Help! How to remove dextran coated layer? - (Dec/09/2013 )

Dear all, 

 

I am looking for a method to remove the dextran coated layer in order to release out the cells. Did anyone have any idea on it? 

 

Thanks. 

-Celz-

Enzymatic removal? --> Dextranase

-El Crazy Xabi-

How about other method? Such as heating or using acid?

-Celz-

You can check these:
http://onlinelibrary.wiley.com/doi/10.1002/bip.1964.360020106/abstract

 

 

But be aware that acid digestion is not specific and may destroy what you want to recover.

-El Crazy Xabi-

I am just thinking what if I boil the sample in hot water, do you think maltodextrin will be broken down into small unit? 

-Celz-

Well, dextran is very heat-stable... what's the final purpouse of all this? YOu said to release cells but, do you want to use them for something afterwards?

-El Crazy Xabi-

Because the bacterial cells are being capsulated by maltodextrin, thus I am planning to look for a protocol to degrade down the maltodextrin in order to release out all the bacterial cells. 

-Celz-

Yes, I got that but, what do you want to use the cells for after that? Culturing, DNA extraction...?

-El Crazy Xabi-

Nope. I am planning to do for total cell count. 

-Celz-