Can I autoclave inulin with yeast extract and peptone? I tried to filter sterilize inulin (20%) but it won't go through the filter. I skimmed through some literature, though no straight answer, it seems like people just autoclave the carbon source inulin together with the rest of ingredients together (121C 15min or 30min). If you have successfully prepped YPI, it will be great if you could share your tips!