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  • Title: Optimization of culture conditions for production of antimalarial menisporopsin A by the seed fungus Menisporopsis theobromae BCC 4162.
    Author: Madla S, Kittakoop P, Wongsa P.
    Journal: Lett Appl Microbiol; 2006 Nov; 43(5):548-53. PubMed ID: 17032230.
    Abstract:
    AIMS: The aim of this work was to optimize the production of a novel antimaralial menisporopsin A by the seed fungus Menisporopsis theobromae BCC 4162. METHODS AND RESULTS: Fungal cultures were grown in shake flasks at 25 degrees C in the basal medium with varying carbon and nitrogen sources, aeration rates and initial pH levels. The optimal carbon and nitrogen sources that improved the production of menisporopsin A were 1% fructose and 2.5% meat extract respectively. The production was further enhanced when the culture incubated on a shaker at 200 rev min(-1) with an initial pH of 8. The yield of menisporopsin A cultured under the optimized conditions was increased from 348.30 (obtained from basal medium) to 889.02 mg l(-1), and the cultivation time was reduced from 28 to only 4 days. As a result, the productivity of menisporopsin A was greatly enhanced to 222.26 mg l(-1) day(-1) which is 18-fold higher than that of basal conditions. Larger scale production in a fermenter was also achieved, yielding menisporopsin A at a maximal level of 594.32 mg l(-1) in 4 days. CONCLUSIONS: The optimized culture conditions for menisporopsin A production by M. theobromae BCC 4162 was the cultivation under shaking or agitation at 25 degrees C in fructose-meat extract medium with an initial pH of 8. SIGNIFICANCE AND IMPACT OF THE STUDY: The production of menisporopsin A in a fermenter with a relatively short incubation period could be valuable for further utilization for chemical structure modification and derivatization.
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