ered ery, % 7.25 Span 20, 0.12 7.35 101 .4 7.25 Cetylpyridium chloride, 0.67 7.40 102 .0 7.25 Sodium lauryl sulfate, 0.07 7.28 100 .40 Data recorded in Table IV indicate that good recoveries of Tween 20 are possible in the presence of low concentrations of Span 20 (nonionic),cetylpyridium chloride (cationic), and sodium lauryl sulfate (anionic). For successful assay, an anhydrous medium
Photodegradation of riboflavin in 50-ml samples of fluid milks exposed to fluorescent light (2690 lux) followed first-order reaction kinetics, and the reaction rate (s-1) averaged 1.86 x 10(-5) in skim milk and 1.47 x 10(-5) in whole milk. Additional evidence led us to conclude that photodegradation of riboflavin proceeds prior to the appearance of a light-induced off-flavor.
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