Utilization Of Chestnut Mushroom | Cultivation Of Chesnut Using Sawdust | Pasteurisation Of Liquid Obtained From Chestnut UTILIZATION OF PASTEURISATION LIQUID OBTAıNED FROM CHESTNUT (Castanea sativa) SAWDUST AS WOOD PRESERVATIVE In mushroom cultivation, one of the most important steps is the pasteurization or sterilization. Primarily; all raw materials such as various kinds of wood sawdust or agricultural wastes used as substrate medium are required to be pasteurized.  During the process, pasteurization liquor is generally dumped without re-cycled. In  this study it was investigated that  the fungicidal effect of pasteurization liquor  of chestnut (Castanea sativa)  sawdust,  which  is particularly  rich  in tannins,  against  brown rot  fungi “Coniophora  puteana”.  The  wood  samples were  impregnated  with the  pasteurization  solution according to the ASTM D 1413 standard test method.  The protective effect of this liquor on Scotch pine (Pinus sylvestris L.) wood was considered by