Nip W K, Chu F S
Appl Environ Microbiol. 1977 Apr;33(4):814-6. doi: 10.1128/aem.33.4.814-816.1977.
Factors affecting the production of [14C]patulin from [1-14C]acetate by replacement cultures of Penicillium patulum have been investigated. Incorporation of [1-14C]acetate into patulin reached a maximum with 6- to 8-day-old cultures incubated at 28 degrees C for 8 h in a replacement medium containing 0.1 M glucose, inorganic salts, and undiluted [1-14C]acetate. The specific activity of [14C]patulin obtained from this method was 34 mCi/mmol when 0.5 mCi of [1-14C]acetate was supplied to the replacement medium.