~~Basic amino acids and one neutral aminohydroxy acidserine -,all at the concentration of 5%(w/w), are the most suitable as catalysts of caramelization. Among basic amino acids asparagine is the superior catalyst. Although caramels obtained with serine as the catalyst showed higher tinctorial strength they do not fully dissolve in alcohol, beer, hydrochloric acid and aq. citric acid. The application of lithium, sodium, and potassium salts of amino acids under study sometimes give an increase of tinctorial strength of caramels which, however, form precipitate in the citric acid test. The choice between particular salts as catalysts can be dependent on requested aroma of the caramel. Biogene Aminosauren und ihre Metallsalze als Katalysatoren fur die Karamelisierung. Basische Aminosauren und eine neutrale Aminohydroxysaure -Serin -, alle in der Konzentration von S%(w/w), sind die am besten geeigneten Katalysatoren fur die Karamelisierung. Unter den basischen Aminosauren ist Asparagin der uberlegene Katalysator. Obwohl das mit Serin als Katalysator erhaltene Karamel hohere Farbekraft zeigte, loste es sich nicht vollstandig in Alkohol, Bier, Salzsaure und waRriger Citronensaure. Die Anwendung der Lithium-, Natrium-und Kaliumsalze der untersuchten Aminosauren zeigten manchmal eine Erhohung der Farbekraft des Karamels, welche jedoch in dem Citronensaureversuch einen Niederschlag bildet. Die Auswahl unter den verschiedenen Salzen als Katalysatoren kann von dem gewunschten Aroma des Karamels abhangig gemacht werden.
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