No but I've used that kit for other challenging samples. You may want to avoid any heating steps as your starchy sample will turn into a bit of a gooey gel. Use a small amount of tissue and a larger amount of grinding buffer. (assuming you mean the starchy tuber part, not the fibrous roots). Good grinding will help a lot.
If you do try it and it works well (or even if you run into issues) contact the customer support and report your experience. Sometimes they will send you a freebie kit as a thank you. The company is interested to find out what sorts of samples their kit can be used for.
Amy Klocko Thank you for your answer. How much tissue will you suggest to start with? We have been trying different amount of tissues according to the handbook as well as other amounts but the problem is we are having problem with the concentration of DNA we get. What are the process you use for grinding when you have lots of samples? I have contacted customer support as well and looks like what they have mentioned are the process we already tried.
I used about 1/4 of the suggested amount of material then doubled the grinding buffer. You can always elute/disolve in a smaller volume of buffer at the end. Rather than scaling up, try to get the protocol working. I used a ceramic mortar and pestle, we had lots of those so I could do 20 at a time. For easier to grind samples I used the little blue pestles that fit in epi 1.7 ml tubes. We had a stand mounted power drill with an adaptor that held those.
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