Cov European Union thiab Tebchaws Meskas Lub Tsev Haujlwm Saib Xyuas Kev Ua Liaj Ua Teb tau hais tseg: gelatin ntau lawm tom qab 3 hnub ntawm cov kua qaub leaching, 35 hnub ntawm cov hmoov tshauv leaching, gelatin tov tom qab sterilization ntawm 138 ℃ rau 4 vib nas this rau cov khoom muaj kev nyab xeeb (xws li tsis muaj BSE).Txawm li cas los xij, peb lub tuam txhab tau siv cov txheej txheem tsim tawm ntawm hydrochloric acid leaching nrog ntau dua 3.5% rau tsawg kawg 7 hnub, cov tshauv leaching tsawg kawg yog 45 hnub, thiab cov kua nplaum ua kom tsis muaj menyuam ntawm 140 ℃ rau 7 vib nas this.