Prions are best killed by -: (A) Autoclaving at 121degC, (B) 5% formaline, (C) Sodium hydroxide, (D) Sodium hypochloride
Answer is C. Ans. is 'c' i.e., Sodium hydroxide o Incineration is apparently the only way of disinfecting prion-contaminated materials or tissues,o Boiling or irradiation have no effect and even routine autoclaving (at 1210C) is not reliable. Therefore, where there is a risk of exposure, surgeons use disposable instruments.o To sterilize reusable instruments, WHO currently recommends combined use of a strong solution of sodium hydroxide and extended autoclaving at 134degC."Autoclaving at 134{>C for 5 hrs or treatment with 2 N NaOH for several hours is recommended for sterilization ofprions ". -- Harrison