Rehydration and Sensory Properties of Dehydrated Russet Potatoes (Solanum tuberosum) Using Microwave Vacuum, Heated Air, or Freeze Dehydration
2009
Russet potatoes (Solanum tuberosum) dehydrated by microwave-vacuum (MVD), heated air (HAD), and freeze drying (FD) were compared by measuring color, texture, rehydration properties, and sensory properties. Scanning Electron Microscope (SEM) images were taken to observe cell damage in the dried potatoes. The MVD potatoes remained intact following rehydration and retained suitable textural and color properties based upon sensory evaluation. The FD potatoes became friable and lost color. Sensory panelists preferred MVD, FD, and HAD in that order. MVD can provide consumers with a dehydrated product that has characteristics similar to or better than those dried by HAD or FD.
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