Kvasny Prum. 1977; 23(8): 169-171 | DOI: 10.18832/kp1977027

KJEL-FOSS - an instrument for the determination of proteins, its properties, accuracy and advantages.Peer-reviewed article

K. KOSAŘ

In 1976 Research Institute of Brewing and Malting Industries inBrnopurchased a new instrument, known as KJEL-FOSS, for the determination of nitrogenous substances. The instrument operates quite automatically the sequence of operations being the same as that of the method [mineralization, dilution, neutralization, distillation and titration]. The principal pert of the instrument consists of six special Kjeldahl flasks attached to a rotating table making 1/5 of revoluetion every 3 minutes. The results of analysis are known in  15 minutes after putting a sample in-to the instrument. Its maximum capacity is 20 samples per hour. To obtain reliable data it is necessary to calibrate the instrument using chemicals with known content of nitrogen. Determination of the content of nitrogenous substances by means of a KJEL-FOSS instrument gives more accurate results than the traditional Kjeldahl method, but the instrument is expensive and its maintenance is rather exacting. On the other hand one must underline its advantages:  minim um consumption of chemicals, simple analyzing technique and saving of time.
(In Czech, English summary only)

Keywords: brewing industry, Kjel-Foss, proteins

Published: August 1, 1977