Ana amfani da rotary retorts don juya gwangwani ko wasu kwantena yayin haifuwa da sanyaya.Manufar ita ce motsa abubuwan da ke cikin abinci don hanzarta canja wurin zafi a cikin gwangwani, haɓaka inganci da hana duk wani mummunan tasiri da ke da alaƙa da tsarin dumama a tsaye.
Za'a iya haɓaka tsarin zafin jiki da ƙimar samfuran da aka gama sosai don wasu kwantena da samfuran ta motsi kwantena yayin zagayowar dafa/ sanyi.Motsi ko tashin hankalin kwantena yana tilasta dumama samfurin cikin akwati.
Zazzaɓin haifuwa (ƙimar haifuwa ko FO) an ayyana shi ta masana'anta kuma zai dogara da farkon gurɓataccen samfurin da halayen ƙwayoyin cuta.