Cold pressed oil cake is the main by-product of cold pressed Zanthoxylum armatum DC. Prodr. oil (short for cake). Because of purely physical squeezing and the medium temperature and other advantages of cold pressing technology, there were retained rich chemical compounds of Zanthoxylum armatum DC. Prodr. both in cold pressed oil and by-products. In view of the present situation on the uncreasing development of cold pressing technology and raise production of cake, the cake resources misconduct and low utili...