BROWNING POTENTIAL OF LIQUID SMOKE SOLUTIONS - COMPARISON OF 2 METHODS

The color-forming potential of carbonyl compounds from liquid smoke so lutions with selected amino acids was determined with a colorimetric p rocedure used in industry and compared with a color analysis on filter paper discs. The two methods provided different evaluations of formed colors. Of the carbonyls tested, glycolaldehyde, methylglyoxal and gl yoxal showed significant browning potential, while formaldehyde and hy droxyacetone showed very little color formation. Measurement of browni ng potential of amino acids varied between the procedures. The disc as say procedure enabled better characterization of smoke colors produced .