Mechanical behavior of Deveci pear cultivar affected by maturation

Year 2019, Volume: 1 Issue: 2, 39 - 43, 30.12.2019

Elçin Yeşiloğlu Cevher Yeşim Benal Öztekin

Abstract

The present study examines the mechanical behavior of ‘Deveci’ pear
cultivar produced in Turkey in terms of harvesting periods. Penetration tests
were applied to the determined sides (bloom side, lateral side and stem side)
of pear fruit harvested on three different maturation dates (October 5-15-25).
According to the test results, it was found that harvesting period had
different effects on mechanical properties of pears. Decrease was found in
rupture force, rupture energy, deformation and firmness values of pears as the
harvest date progressed. Rupture force values were as 52.69, 45.56 and 41.95 N
in the first, second and third harvesting dates, respectively. Deformation was
5.57 in the first harvesting date and as 5.12 mm in the third harvesting date.
The present study showed that firmness values of mature pear fruit were less.
Firmness value was 9.59 N/mm in the first harvesting date and 8.09 N/mm in the
third harvesting date. The highest firmness value was found on the stem side of
pears. 

Keywords

Pear; mechanical properties; rupture force; rupture energy; firmness

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