Malt kilning

Darre,/. drying, kiln-drying drying room or kiln Brewing) malt kiln Metal.) liquation hearth withering. 

Malz, n. malt, -aufgnss, m. infusion of malt, wort, -auszug, m. malt extract wort, -bot-tich, m. malt vat, malt tub. -darre, /. malt kiln, -eiweiss, n. diastase. 

It has been shown in these studies that the principal, and probably only significant source of NDMA, is malt which had been dried by direct-fired drying (21, 73). It is well known that malts kilned by indirect firing have either low or non-detectable levels of NDMA (74). Consequently, changes in malting procedures have been implemented in both the U.S. and Canada which have resulted in marked reductions in N-nitrosamine levels in both malts and beer (70,74). For example, sulfur dioxide or products of sulfur combustion are now used routinely by all maltsters in the U.S. to minimize N-nitrosamine formation (70). The Canadian malting industry, on the other hand, has... 

Using these improved methods for malt kilning, it is now possible to produce malt with low NDMA contcunination even with existing direct-fired kilns. A comparison of NDMA concentration in commercially available beer in 1978/79 and 1981, after introduction of the new techniques is given in Table III. 

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