1> .Heating: nkeji atọ 37ºC-45ºC kpo oku maka ịkwalite mgbasa ọbara mpaghara tupu ọgwụgwọ.
2> .Cryo abụba kefriza: na okpomọkụ nke -5 ºC ka -11 ºC, abụba mkpụrụ ndụ ga-n'ụzọ ziri ezi ezubere iche, converted n'ime siri ike, tutu amama site metabolism na-enweghị imerụ gburugburu anụ ahụ, ka n'ụzọ dị irè belata-achọghị abụba na kpọmkwem akụkụ nke ahu.
3>.Vacuum: inyeaka maka ọgwụgwọ na-ekpo ọkụ abụba, na-enwe mmịnye akpaka na mwepụta iji amịpụta abụba ka ọ na-eme ịhịa aka n'ahụ na dredge meridians ma kwalite mgbasa ọbara.