For increasing the yield of naringinase which has great potential in the debittering of citrus the wild Penicillium sp.P-M1 was treated with ultraviolet(UV) radiation and the optimum treating conditions which was got by primary screening were as follows: the dilution of the spore suspension(107/mL) was 10-5,the 15W UV lamp was used as UV light with 30 cm radiation distance and 5 minutes treating time.Through UV mutation a mutant strain named PU-15 was obtained.As compared with the initial strain,the activit...
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