Temperature requirements for growth Temperature for growth(C) Irou Minimun Optimum Maximum Comments ochre phile Below 0 10-15 Below 20 Grow best at relatively low T able to grow at low t but prefer Psychrotrophs 0 15-30 Above 25 derate T Mesophile 10-15 30-40 Below 45 Most bacteria esp. those living in association with warm-blooded animals Thermophile 45 50-85 Above 100 Among all thermophiles is wi (boiling) variation in optimum and maximum T