The Effects of Some Physical, Chemical and Microwave Pretreatments on Plum Drying

Yıl 2019, Cilt: 8 Sayı: 2, 203 - 208, 20.12.2019

Fırat Ege Karaat

https://doi.org/10.29278/azd.541157

Cited By: 1

Öz

This study was
conducted to observe the effects of some physical, chemical and microwave pretreatments
on drying period and prune quality of Stanley plums dried under open sun. For
this aim, seven pretreatments including piercing with thin needle, cutting
fruit layer by knife, microwave application, dipping into solutions of NaOH and
K₂CO₃ with or without olive oil addition were compared
with untreated samples. Microwave application was the most effective
pretreatment in reducing drying time and was followed by dipping into 5% K₂CO₃.
Microwave and other chemical applications negatively affected quality by increasing
redness of prunes. Olive oil addition decreased this negative effect but
decelerated drying process. Layer cutting were concluded to be a promising method
since it significantly accelerated drying while saving quality of prunes.

Anahtar Kelimeler

drying curve, plum, prune, pretreatment

Drying of stanley plum with some post-harvest applications

Öz

This study was conducted
to observe the effects of some physical, chemical and microwave pretreatments
on drying period and prune colour of Stanley plums dried in the sun. For this
aim, seven pretreatments including piercing with thin needle, cutting fruit
layer by knife, microwave application, dipping into solutions of NaOH and K₂CO₃
with or without olive oil addition were compared with untreated samples.
Microwave application was the most effective pretreatment in reducing drying
time (95 h) while control was the slowest drying application (401 h). Microwave
and other chemical applications negatively affected colour by increasing
redness of prunes. Olive oil addition decreased this negative effect but
decelerated drying process. Layer cutting were concluded to be a promising
method since it significantly accelerated drying while saving colour of prunes.

Anahtar Kelimeler

Drying curve, plum, pretreatment, prune, quality

Kaynakça

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