Abstract
The melezitose and trehalulose contents of a cotton sample heavily contaminated by whitefly honeydew are analyzed by high performance anion exchange chromatography (HPAEC) as a function of heating time at 200°C. Results indicate that the concentrations of melezitose and trehalulose on the surface of the cotton decrease exponentially as a result of thermochemical reactions. The mechanism and rate of each reaction is elucidated by similar heat treatment of pure melezitose and trehalulose with subsequent analysis of reaction products. The rate of thermochemical degradation in the case of trehalulose is of sufficient magnitude that its concentration on the cotton surface may be substantially decreased under controlled conditions of heat and time. The degradation rate of melezitose is nearly an order of magnitude smaller, and its concentration on the cotton surface is not substantially affected under similar conditions.
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