Re: [DIYbio] Re: would anyone be interested in cheap PDA?

The best part about making PDA at home is getting to eat mashed potatoes each time you do it.

I got a gallon of potato water 2 weeks ago after I made some mashed potatoes and it's still in a container in my basement, I'll check to see if anything is growing in it when I get home.  The liquid you get from draining the potatoes is a cloudy suspension, and after a day a good 2 inches of "potato stuff" settled on the bottom.

The liquid broth seems easy enough to make, but, what part do you dehydrate if you wanted to keep it dry and store it?  The potato filtrate?  The potato precipitate?  Or could you mash up the potatoes and spread them out on a cookie sheet in a warm oven and dry them that way, then coffee grinder them into a fine powder, add the agar and dextrose accordingly, and BAM. POTATO MEDIA HOT OFF THE PRESS.

Or get dehydrated mash potatoes from the grocery store for a dollar, and add agar and dextrose accordingly, and then sell 250g and 500g containers for comparable online prices. 

THE BIRTH OF A POTATO EMPIRE.

How could you sterilize it though?  Pressure sterilizer seems like it would just make it wet again.  Maybe a hot oven for a long period would work.

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