Development of a fluorescence sensor to monitor lipid oxidation. II. The kinetics of chitosan fluorescence formation after exposure to lipid oxidation volatiles

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Abstract
Chitosan was used as a basis for a fluorescence sensor to monitor volatile malonaldehyde production during lipid oxidation. The rate of chitosan fluorescence formation during exposure to volatiles generated during lipid oxidation depended on the extent of fluorescence formation to the one half power and had an activation energy of 13 kcal/mole. Three processes were involved in the fluorescence formation. The rate of volatile malonaldehyde generation during lipid oxidation depended on the extent of malonaldehyde formation to the one half power and had an activation energy of 14 kcal/mole. Malonaldehyde sorption on chitosan powder was immediate and independent of temperature. Chitosan fluorescence formation after exposure to volatile malonaldehyde proceeded at a constant rate and had an activation energy of 13 kcal/mole.