I have completed the stages of forming amyloid fibrils from soy protein isolate, but I have encountered a problem in the freeze-drying process of this solution. Every time I put the solution in the freeze dryer, nothing remains at the bottom of the container, and the entire solution evaporates, preventing the drying process from occurring. A photo of the process after freeze-drying is provided below. Can someone guide me in this matter? Thank you.