Influence of combined pretreatments on color parameters during convective drying of Mirabelle plum ( Prunus domestica subsp. syriaca )
作者： Jalal Dehghannya , Rasoul Gorbani , Babak Ghanbarzadeh
DOI: 10.1007/S00231-017-1995-6
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摘要: Discoloration and browning are caused primarily by various reactions, including Maillard condensation of hexoses amino components, phenol polymerization pigment destruction. Convective drying can be combined with pretreatments to help reduce undesired color changes improve parameters dried products. In this study, effects ultrasound-assisted osmotic dehydration as a pretreatment before convective on Mirabelle plum were investigated. Variations L* (lightness), a* (redness/greenness), b* (yellowness/blueness), total change (ΔE), chroma, hue angle index values presented versus time during control pretreated plums influenced ultrasonication time, solution concentration immersion in solution. Samples ultrasound for 30 min 70% had more desirable among all other samples, the closest L*, fresh one, showing that beneficial final products after drying.
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