Microbial conversion of sterol-containing soybean oil production waste

  title={Microbial conversion of sterol-containing soybean oil production waste},
  author={Marina V. Donova and Dmitry V. Dovbnya and Galina V Sukhodolskaya and Sergey M Khomutov and Vera M Nikolayeva and Inchan Kwon and Kyuboem Han},
Soybean extract residue (scum), a waste of soybean oil production, was examined as a raw material for C17-ketosteroid production. As a model process, its bioconversion to 9α-hydroxyandrost4-ene-3,17-dione (9-OH-AD) by Mycobacterium sp VKM Ac-1817D was studied. The content of transformable sterols (sitosterol, stigmasterol and campesterol) in scum was estimated at ∼14%. The bioconversion of scum to 9-OH-AD was characterized by a long lag-period (300–350 h) followed by 9-OHAD accumulation. The… CONTINUE READING


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