Untreated and pectinase-treated potato flours from Atlantic and Superior cultivars were characterised toidentify the effects of pectinase treatment on their physicochemical properties.
Steam-cooked potato whole-tissues were treated with and without pectinase to prepare the dehydrated potato flours.
Untreated and pectinase-treated potato flours were investigated with respect to morphology, chemicalcomposition, starch leaching, swelling power, gelatinization, and pasting viscosity
Upon viewing with scanning electron microscopy and light microscopy, the pectinase-treated (relative to untreated) potato flours revealed that the retrograded starch materials were present in intact parenchyma cells, apparently exhibiting granular structures
Their protein and ash contents were reduced through pectinase treatment.
While starch leachate contents were lower for the pectinase-treated potato flours, the opposite trend in swelling powers was observed. Pectinase-treated potato flours exhibited higher melting temperatures and pasting viscosities than untreated counterparts.
Overall, the modification of potato flour morphology
by pectinase treatment may result in alteration of physicochemical properties of potato flours.
Untreated and pectinase-treated potato flours from Atlantic and Superior cultivars were characterised toidentify the effects of pectinase treatment on their physicochemical properties.Steam-cooked potato whole-tissues were treated with and without pectinase to prepare the dehydrated potato flours. Untreated and pectinase-treated potato flours were investigated with respect to morphology, chemicalcomposition, starch leaching, swelling power, gelatinization, and pasting viscosityUpon viewing with scanning electron microscopy and light microscopy, the pectinase-treated (relative to untreated) potato flours revealed that the retrograded starch materials were present in intact parenchyma cells, apparently exhibiting granular structuresTheir protein and ash contents were reduced through pectinase treatment.While starch leachate contents were lower for the pectinase-treated potato flours, the opposite trend in swelling powers was observed. Pectinase-treated potato flours exhibited higher melting temperatures and pasting viscosities than untreated counterparts. Overall, the modification of potato flour morphologyby pectinase treatment may result in alteration of physicochemical properties of potato flours.
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