In order to further improve the yield of VA and VE produced by a Paecilomyces marquandii strain, using PDA liquid medium as the basic medium, the effects of adding nitrogen source, pH value and Fe2＋ on the VA and VE ...In order to further improve the yield of VA and VE produced by a Paecilomyces marquandii strain, using PDA liquid medium as the basic medium, the effects of adding nitrogen source, pH value and Fe2＋ on the VA and VE production were compared with an orthogonal experiment. The results showed that the VA yield was significantly increased when sodium nitrate was added as nitrogen source, pH value of medium was 6, but Fe2＋ was not added; the addition of peptone into the basic medium as a nitrogen source contributed to the improvement of VE yield in mycelia; the PDA liquid medium, as a basic medium, was more conducive to the VA production by the Paecilomyces marquandii strain.展开更多
基金Supported by"125"Major Science and Technology Program of Department of Education,Guizhou Province[QJHZDZX(2012)013]~~
文摘In order to further improve the yield of VA and VE produced by a Paecilomyces marquandii strain, using PDA liquid medium as the basic medium, the effects of adding nitrogen source, pH value and Fe2＋ on the VA and VE production were compared with an orthogonal experiment. The results showed that the VA yield was significantly increased when sodium nitrate was added as nitrogen source, pH value of medium was 6, but Fe2＋ was not added; the addition of peptone into the basic medium as a nitrogen source contributed to the improvement of VE yield in mycelia; the PDA liquid medium, as a basic medium, was more conducive to the VA production by the Paecilomyces marquandii strain.
