Abstract
The effect of sonication time and kind of liquid medium on polyphenol retention and microstructure changes during predrying treatment of apple tissue was investigated. The apple cubes from ‘Idared’ cultivar were submerged in water or sucrose solution and sonicated indirectly in beakers placed in a water bath fitted with ultrasound transducers (25 kHz, 0.1 W/cm 3 ) at 40 °C. The treatment was conducted with and without ultrasound applied for 45 and 90 min. The content of individual polyphenols was monitored by a reverse-phase high-performance liquid chromatography (RP-HPLC) method. The dominant phenolic compounds in apple were procyanidins, accounting for 56 % of total polyphenols. While a significant effect of sonication on mass transfer intensification was observed when the samples were dehydrated in sucrose solution, almost no negative effects of ultrasound application were perceived on polyphenols concentration, except for dimers of catechin. When using ultrasound in water solution, an increase in polyphenol compound losses was noted. Furthermore, the ultrasound energy caused an apple tissue structure modification which additionally affected polyphenol retention during predrying treatment.
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Claims 5
Claim · model-written summary
Procyanidins accounted for 56% of apple polyphenols.
- Taxon
- apple
Malus domesticae0 - Outcome
- procyanidinse0
- Value
- 56 %e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dominant phenolic compounds in apple were procyanidins, accounting for 56 % of total polyphenols”
Claim · model-written summary
Sonication intensified mass transfer during dehydration in sucrose solution.
- Taxon
- appleMalus domesticae1
- Treatment
- sonicatione0
- Outcome
- mass transfer intensificatione0
- Direction
- intensificatione0
- Qualifier
- sucrose solutione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a significant effect of sonication on mass transfer intensification was observed when the samples were dehydrated in sucrose solution”
e1“predrying treatment of apple tissue”
Claim · model-written summary
Ultrasound in sucrose solution had almost no negative effect on polyphenol concentration apart from catechin dimers.
- Taxon
- appleMalus domesticae1
- Treatment
- ultrasound applicatione0
- Outcome
- polyphenols concentratione0
- Direction
- almost no negative effectse0
- Qualifier
- except for dimers of catechine0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“almost no negative effects of ultrasound application were perceived on polyphenols concentration, except for dimers of catechin”
e1“predrying treatment of apple tissue”
Claim · model-written summary
Ultrasound in water increased polyphenol losses.
- Taxon
- appleMalus domesticae1
- Treatment
- ultrasound in water solutione0
- Outcome
- polyphenol compound lossese0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When using ultrasound in water solution, an increase in polyphenol compound losses was noted”
e1“predrying treatment of apple tissue”
Claim · model-written summary
Ultrasound modified apple tissue structure and affected polyphenol retention.
- Taxon
- appleMalus domesticae0
- Treatment
- ultrasound energye0
- Outcome
- apple tissue structure modificatione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ultrasound energy caused an apple tissue structure modification which additionally affected polyphenol retention during predrying treatment”
The same questions in other papers
physical treatment · quality: phytochemicals · Malus domestica (apple)Positive and negative results
2 papers in the same direction as this paper · 8 in the opposite direction
- negative
- positive
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See all 11 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.