The American Society of Brewing Chemists

Beer Samples. The beer samples were examined as part of the American Society of Brewing Chemists (ASBC) and Association of Official Analytical Chemists (AOAC) collaborative studies of NDMA in beer. Duplicate samples were analyzed by the column extraction procedure and the ASBC distillation procedure (35). The AOAC procedure (36) was similar, except that a larger sample (50 vs. 25 g) was examined and sulfamic acid was added to minimize artifactual formation of nitrosamines. Both methods utilize N-nitrosodipropylamine (NDPA) as an internal standard. 

There are currently a number of recommended methods of analysis for the determination of a-and 0-acids in hops by HPLC (e.g., Fig. 2). The methods recommended by the Institute of Brewing, the American Society of Brewing Chemists, and the European Brewery Convention are summarized in Table 1. The method recommended by the latter two is in fact the same and is thus considered to be an international method. There are some key differences worthy of note here. Both clearly rely on the use of phosphoric acid to suppress the ionization of the acidic compo-... 

Chen, E. C.-H. (1978) The relative contribution of EhrUch and biosynthetic pathways to the formation of fusel alcohols. Journal of the American Society of Brewing Chemists, 36, 39-43. 

Duan, W., Roddick, F. A., Higgins, V. J., Rogers, P. J. (2004) A parallel analysis of H2S and SO2 formation by brewing yeast in response to sulfur-containing amino acids and ammonium ions. Journal of the American Society of Brewing Chemists, 62, 35 1. 

Malcorps, P., Cheval, J. M., Jamil, S., Dufour, J.-P. (1991) A new model for the regulation of ester synthesis by alcohol acetyltransferases in Saccharomyces cerevisiae. Journal of the American Society of Brewing Chemists, 49, 47-53. 

The American Society of Brewing Chemists, Inc., of Sturgeon Bay, Wis., collects annual data on production and processes concerned with brewing, malting, and related industries. 

Wagner HP, Dalglish K, McGarrity MJ. 1991. Determination of zinc in wort and beer by graphite-furnace atomic absorption spectrometry. Journal of the American Society of Brewing Chemists 49(1 ) 28- 30. 

Inoue T. and Mizuno A. Preliminary study for the development of a long-life, continuous, primary fermentation system for beer brewing. Journal of the American Society of Brewing Chemists 66 (2) (2008) 80-87. 

Mota A., Novak R, Madeira F., Vicente A.A., Teixeira J.A., Smogrovicova D. and Branyik T. Formation of flavor-active compounds dming continuous alcohol-free beer production The influence of yeast strain, reactor configuration, and carrier type. Journal of the American Society of Brewing Chemists 69... 

Omura, F., Shibano, Y., Fukui, N., Nakatani, K. (1995). Reduction of hydrogen sulfide production in brewing yeast by constitutive expression of MET25 gene. Journal of the American Society of Brewing Chemists, 53, 58-62. 

Le Van, V M., Strehaiano, P., Nguyen, D. L., TaiUandier, R (2001). Microhial protease or yeast extract - alternative additions for improvement of fermentation performance and qnaUty of heer hrewed with a high rice content. Journal of the American Society of Brewing Chemists, 59, 10-16. 

Griddle WJ, Jones TP, and Parry KW (1989) A new approach to ethanol measurement in alcoholic beverages. Journal of the American Society of Brewing Chemists 47 1-3. 

Chlup, P. L., Bernard, D., Stewart, G. G. (2007). The disc stack centrifuge and its impact on yeast and beer quality. Journal of the American Society of Brewing Chemists, 65, 29-37. 

Pedersen, M. B. (1994). Molecular analyses of yeast DNA, tools for pure yeast maintenance in the brewery. Journal of the American Society of Brewing Chemists, 52, 23-21. 

De Angelo, J., Siebert, K. J. (1987). A new medium for the detection of wild yeast in brewing culture yeast. Journal of the American Society of Brewing Chemists, 45, 135-140. 

Van Zandycke, S. M., Simal, O., Gualdoni, S., Smart, K. A. (2003). Determination of yeast viability using fluorophores. Journal of the American Society of Brewing Chemists, 61, 15-22. 

Sarlin, T., Laitila, A., Pekkarinen, A., Haikara, A. (2005a). Effects of three Fusarium species on the quality of barley and malt. Journal of the American Society of Brewing Chemists, 43, 43-49. 

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