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  • Formation of glyceryl 2-mononitrate by regioselective bioconversion of glyceryl trinitrate: efficiency of the filamentous fungus Phanerochaete chrysosporium.

Formation of glyceryl 2-mononitrate by regioselective bioconversion of glyceryl trinitrate: efficiency of the filamentous fungus Phanerochaete chrysosporium.

Biotechnology and applied biochemistry (1990-06-01)
C Ducrocq, C Servy, M Lenfant
ABSTRACT

Various microorganisms have been evaluated for their ability to hydrolyze glyceryl trinitrate (GTN) to glyceryl dinitrates and mononitrates. Provided that the GTN extracellular concentration was under the lethal dose, metabolite formation and regioselectivity depend on the nature of the strain used. In particular, Phanerochaete chrysosporium at a sublethal dose (3 mM) converts GTN into 1,2-glyceryl dinitrate and 2-glyceryl mononitrate (2-GMN) with a 80% regioselectivity in both steps. This bioconversion, when carried out in fermentors at 28 degrees C, allowed formation of 2-GMN at a rate of 12 mumol/h/g of dried mycelium. Successive batches of 3 mM GTN could be converted into 2-GMN as long as consecutive additions of glycerol or glucose were effected to ensure cell survival and the efficiency of the enzymatic system involved.

MATERIALS
Product Number
Brand
Product Description

Supelco
2-Mononitroglycerin solution, 1.0 mg/mL in acetonitrile, ampule of 1 mL, certified reference material, Cerilliant®
Supelco
2-Mononitroglycerin solution, 100 μg/mL in acetonitrile, ampule of 1 mL, certified reference material, Cerilliant®

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