European Union na United States Department of Agriculture na-akọwapụta: mmepụta gelatin mgbe ụbọchị 3 nke acid leaching gasịrị, ụbọchị 35 nke ash leaching, gelatin ngwọta mgbe ịgba ọgwụ mgbochi ọrịa na 138 ℃ maka 4 sekọnd maka nchekwa ngwaahịa (ie free nke BSE).Otú ọ dị, anyị ụlọ ọrụ n'ezie na-eji mmepụta usoro nke hydrochloric acid leaching na a ịta nke ihe karịrị 3.5% n'ihi na ọ dịghị ihe ọzọ 7 ụbọchị, uyi leaching dịkarịa ala 45 ụbọchị, na gluu ngwọta igba ogwu na 140 ℃ maka 7 sekọnd.