Abstract
In this study, the impacts of two different pear cultivars, “Conference” and “Alexander Lucas”, on the kinetics and the final quality of samples dried by convection (CD) and microwave-convection (MCD) methods, were investigated. The quality of dried material was evaluated by the analysis of water activity, porosity, color, acoustic emission (AE) and mechanical and sensory properties. The required drying time to obtain 0.2 kg H2O/kg dry solid (d.s.) was longer for “Conference” than “Alexander Lucas” and was 20 min by CD and 5 min by MCD. The pear cultivar, in conjunction with the drying method (CD or MCD), affected the number of AE events and the work of breaking. The CD pear of the “Conference” cultivar was characterized by higher force, higher breaking work and stronger AE relative to the CD pear of the “Alexander Lucas” cultivar. There were no differences in taste or overall quality, but the hardness was higher for the CD “Conference” pear. A principal component analysis showed that panelists preferred dried fruit with good taste and overall quality but lower hardness. A positive correlation was found between the number of acoustic events and sensory hardness; thus, an acoustic method can be useful for effectively evaluating the texture of dried pears. These results show that the dried pear slices that generated fewer AE events upon breaking were perceived as better by the panelists.
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Claims 12
Claim · model-written summary
Conference pears required longer drying than Alexander Lucas, 20 minutes by convection and 5 minutes by microwave convection.
- Taxon
- pear
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communist0 - Material
- Conferencee0
- Outcome
- required drying timee0
- Direction
- longere0
- Value
- 20 mine0
- Qualifier
- 5 min by MCDe0
- Comparator
- Alexander Lucase0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“The required drying time to obtain 0.2 kg H2O/kg dry solid (d.s.) was longer for “Conference” than “Alexander Lucas” and was 20 min by CD and 5 min by MCD”
t0“Pear”
Claim · model-written summary
Cultivar and drying method affected acoustic emission event counts.
- Taxon
- pearPyrus communise0
- Treatment
- drying method (CD or MCD)e0
- Outcome
- number of AE eventse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pear cultivar, in conjunction with the drying method (CD or MCD), affected the number of AE events and the work of breaking”
Claim · model-written summary
Cultivar and drying method affected breaking work.
- Taxon
- pearPyrus communise0
- Treatment
- drying method (CD or MCD)e0
- Outcome
- work of breakinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pear cultivar, in conjunction with the drying method (CD or MCD), affected the number of AE events and the work of breaking”
Claim · model-written summary
Convection-dried Conference pears had higher breaking force than Alexander Lucas.
- Taxon
- pearPyrus communise0
- Material
- Conferencee0
- Outcome
- forcee0
- Direction
- highere0
- Comparator
- Alexander Lucase0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The CD pear of the “Conference” cultivar was characterized by higher force, higher breaking work and stronger AE relative to the CD pear of the “Alexander Lucas” cultivar”
Claim · model-written summary
Convection-dried Conference pears had higher breaking work than Alexander Lucas.
- Taxon
- pearPyrus communise0
- Material
- Conferencee0
- Outcome
- breaking worke0
- Direction
- highere0
- Comparator
- Alexander Lucase0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The CD pear of the “Conference” cultivar was characterized by higher force, higher breaking work and stronger AE relative to the CD pear of the “Alexander Lucas” cultivar”
Claim · model-written summary
Convection-dried Conference pears had stronger acoustic emission than Alexander Lucas.
- Taxon
- pearPyrus communise0
- Material
- Conferencee0
- Outcome
- AEe0
- Direction
- strongere0
- Comparator
- Alexander Lucase0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The CD pear of the “Conference” cultivar was characterized by higher force, higher breaking work and stronger AE relative to the CD pear of the “Alexander Lucas” cultivar”
Claim · model-written summary
The cultivars showed no differences in taste or overall quality.
- Taxon
- pearPyrus communist0
- Outcome
- taste or overall qualitye0
- Direction
- no differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no differences in taste or overall quality”
t0“Pear”
Claim · model-written summary
Convection-dried Conference pear was harder.
- Taxon
- pearPyrus communise0
- Material
- Conferencee0
- Outcome
- hardnesse0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the hardness was higher for the CD “Conference” pear”
Claim · model-written summary
Panelists preferred dried fruit with good taste and overall quality.
- Taxon
- pearPyrus communist0
- Outcome
- preferred dried fruit with good taste and overall qualitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“panelists preferred dried fruit with good taste and overall quality but lower hardness”
t0“Pear”
Claim · model-written summary
Panelists preferred dried fruit with lower hardness.
- Taxon
- pearPyrus communist0
- Outcome
- hardnesse0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“panelists preferred dried fruit with good taste and overall quality but lower hardness”
t0“Pear”
Claim · model-written summary
Acoustic event counts correlated positively with sensory hardness.
- Taxon
- pearPyrus communist0
- Outcome
- sensory hardnesse0
- Direction
- positivee0
- Qualifier
- number of acoustic eventse0
- Comparator
- number of acoustic eventse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A positive correlation was found between the number of acoustic events and sensory hardness”
t0“Pear”
Claim · model-written summary
Fewer acoustic events while breaking coincided with higher panel ratings.
- Taxon
- pearPyrus communise0
- Outcome
- perceived as bettere0
- Direction
- bettere0
- Qualifier
- fewer AE events upon breakinge0
- Comparator
- fewer AE events upon breakinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dried pear slices that generated fewer AE events upon breaking were perceived as better by the panelists”