I know that some peanut doesn't have oil separation, but this is due to emulsifier chemicals that are added. I'm wondering what causes the oil to be released. I assume the storage structure is ruptured, and the oil molecules are consequently released. What exactly is a peanut? It's not a single cell, is it? And what sort of structure would hold the oils in? Would it be possible to grind it to a powder without any sort of oil release? What would make it possible to do so with other seeds?