Under forsøgs-forhold har man ved gentagen varmebehandling af vegetative bakterier og sporer og ved derefter at foretage 14 cykliske behandlinger af de mest varmebestandige stammer kunnet øge varmeresistensen hos mikroorganismer.
It has been possible under experimental conditions by repeated heat treatment of vegetative bacteria as well as spores and by subsequent 14 cyclic treatments of the most heat resistant strains, to increase the heat resistance of microorganism.