Effect of Mechanical Damages and Storage Conditions on Quality of Markies cv. Potatoes for Processing | Chapter 08 | Advances and Trends in Agricultural Sciences Vol. 3
Aims:
Evaluate whether mechanical damage and storage conditions affect the quality of
the ‘Markies’ potato for processing.
Study Design: The experimental
design was the completely randomized, in the scheme of splitplots. The plots
were composed of treatments with and without mechanical damage and the subplots
were made up by the evaluation times, with 5 replicates, where the experimental
unit was composed of 2 tubers.
Place and Duration of Study: Tubers
of the ‘Markies’ cultivar from the producing region of Perdizes, State of Minas
Gerais, were planted in June 2016 and harvested in October 2016.
Methodology: The tubers were stored
for 2 months at 8°C and further divided into treatment with damage, in which
the tubers were subjected to impact and abrasion and control treatment, in
which the tubers were not damaged. After that, they were stored at 28°C and
evaluated for their loss of loss of accumulated fresh mass (FML), total soluble
sugar (TSS), reducing sugar (RS), nonreducing sugar (NRS) and color after frying
in the periods of 0, 12, 24, 36 and 48 h after being placed at room
temperature.
Results: The mechanical damage in
the tubers increased FML, however, it did not affect the content of TSS, NRS,
RS and color after frying. Increases were observed in the content of TSS and
NRS after 12 h of evaluation. Grade 2 was assigned to the coloring scale after
frying for the tubers regardless of treatment or evaluation period.
Conclusion: Mechanical damage
increases the FML and the ‘Markies’ cultivar is suitable for the industry of
pre-fried potato processing even under the occurrence of mechanical damage and
exposure to high temperatures.
Author(s) Details
Dreice Nascimento Gonçalves
Departamento de Fitotecnia,
Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n - Campus
Universitário, Viçosa - MG, 36570-900, Brazil.
Luciana Gomes Soares
Departamento de Fitotecnia,
Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n - Campus
Universitário, Viçosa - MG, 36570-900, Brazil.
Ariana Mota Pereira
Departamento de Fitotecnia,
Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n - Campus
Universitário, Viçosa - MG, 36570-900, Brazil.
Paula Acácia Silva Ramos
Departamento de Fitotecnia,
Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n - Campus
Universitário, Viçosa - MG, 36570-900, Brazil.
Maria Eduarda da Silva
Guimarães
Departamento de Fitotecnia,
Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n - Campus
Universitário, Viçosa - MG, 36570-900, Brazil.
Fernando Luiz Finger
Departamento de Fitotecnia,
Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n - Campus
Universitário, Viçosa - MG, 36570-900, Brazil.
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