Comparison of peeling outcomes for IR and lye peeling was based on peeling performance and peeled product quality. Peeling performance which involved determination of peelability, ease of peeling, peeling loss, and peeled-off thickness was comprehensively evaluated using procedures described by Pan et al. (2009). In an attempt to minimize
possible subjective bias, randomized double-blind experiments were conducted in scoring the ease of peeling. A higher value of the ease of peeling indicates that the skin is easier to remove. Peeled-off thickness was measured and studied to determine the differences in peeling mechanism between IR and lye peeling methods. Thickness of peeled
kin was measured at three locations with a micrometer (model Central Tech 895, Micro precision Calibration Inc., Grass Comparison of peeling outcomes for IR and lye peeling was based on peeling performance and peeled product quality. Peeling performance which involved determination of peelability, ease of peeling, peeling loss, and peeled-off thickness was comprehensively evaluated using procedures described byPan et al. (2009). In an attempt to minimize possible subjective bias, randomized double-blind experiments were conducted in scoring the ease of peeling. A higher value of the ease of peeling indicates that the skin is easier to remove. Peeled-off thickness was measured and studied to determine the differences in peeling mechanism between IR and lye peeling methods. Thickness of peeled skin was measured at three locations with a micrometer (model Central Tech 895, Microprecision Calibration Inc., Grass Valley, Cal., USA) with
an accuracy of 0.001 mm, and the average value for each fruit was used in further statistical analysis Valley, Cal., USA) with an accuracy of 0.001 mm, and the average value for each fruit was used in further statistical analysis