Abstract
The fresh-cut or sliced apple market has grown rapidly in recent years due to consumers' demand for fresh, convenient, and nutritious foods. Fresh-cut apples also contributed to increased consumption of fruits among school children. However, not many studies have investigated means to improve the quality of fresh-cut apples. In this study, we explored the use of ultrasound as a new method to cut apples and examined the quality of two apple varieties (Red Delicious and Golden Delicious) cut with ultrasound. Both apple types were cut without (control) and with ultrasound at four amplitudes (0%, 30%, 40%, and 50%) with an ultrasonic knife. Quality attributes, for example, color, pH, polyphenol oxidase (PPO) activity, surface morphology, and sensory characteristics (color, odor, overall acceptability, and off-odor) of the apples right after cutting and during a 2-week storage at refrigeration temperature were compared. With the set up used in this study, both apples cut with ultrasound exhibited a relatively dense and smooth surface morphology with less cell damage compared with the relatively rough surface and more cells damage in the control. An improvement in quality attributes was observed when the ultrasound amplitude was increased from 30% to 50%. The apples cut with ultrasound had a lower PPO activity compared to the control, indicating less browning. In visual quality evaluation, panelists showed higher liking of the apples cut with ultrasound. The ultrasound-assisted cutting has showed promise for producing fresh-cut apples with improved quality, and may be used as an alternative to traditional cutting method. PRACTICAL APPLICATION: Fresh-cut produce has gained popularity in recent years due to its health benefits. Traditional methods to produce fresh produce use a static stainless steel blade to cut fruits or vegetables, causing chemical or visual quality issues. This study proposed a new method using a blade that vibrates at ultrasonic frequency to cut apples. The results have shown an improvement in the quality of fresh-cut apples. This method may provide a new solution for producing fresh-cut produce to better meet the requirement of consumers for quality products.
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Claims 7
Claim · model-written summary
Apples cut with ultrasound had less cell damage than control apples.
- Taxon
- apple
Malus domesticae0 - Treatment
- cut with ultrasounde1
- Outcome
- cell damagee1
- Direction
- lesse1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“examined the quality of two apple varieties (Red Delicious and Golden Delicious) cut with ultrasound”
e1“both apples cut with ultrasound exhibited a relatively dense and smooth surface morphology with less cell damage compared with the relatively rough surface and more cells damage in the control”
Claim · model-written summary
Apples cut with ultrasound had a relatively dense and smooth surface morphology compared with the relatively rough surface of control apples.
- Taxon
- appleMalus domesticae0
- Treatment
- cut with ultrasounde1
- Outcome
- surface morphologye1
- Direction
- relatively dense and smoothe1
- Comparator
- relatively rough surfacee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“examined the quality of two apple varieties (Red Delicious and Golden Delicious) cut with ultrasound”
e1“both apples cut with ultrasound exhibited a relatively dense and smooth surface morphology with less cell damage compared with the relatively rough surface and more cells damage in the control”
Claim · model-written summary
Increasing ultrasound amplitude from 30% to 50% improved fresh-cut apple quality attributes.
- Taxon
- appleMalus domesticae0
- Treatment
- ultrasound amplitudee2
- Outcome
- quality attributese2
- Direction
- improvemente2
- Comparator
- 30%e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“examined the quality of two apple varieties (Red Delicious and Golden Delicious) cut with ultrasound”
e2“An improvement in quality attributes was observed when the ultrasound amplitude was increased from 30% to 50%”
Claim · model-written summary
Apples cut with ultrasound had lower PPO activity than control apples.
- Taxon
- appleMalus domesticae0
- Treatment
- cut with ultrasounde3
- Gene
- PPOe3
- Outcome
- PPO activitye3
- Direction
- lowere3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“examined the quality of two apple varieties (Red Delicious and Golden Delicious) cut with ultrasound”
e3“The apples cut with ultrasound had a lower PPO activity compared to the control, indicating less browning”
Claim · model-written summary
Lower PPO activity in ultrasound-cut apples indicates less browning.
- Taxon
- appleMalus domesticae0
- Treatment
- cut with ultrasounde3
- Outcome
- browninge3
- Direction
- lesse3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“examined the quality of two apple varieties (Red Delicious and Golden Delicious) cut with ultrasound”
e3“The apples cut with ultrasound had a lower PPO activity compared to the control, indicating less browning”
Claim · model-written summary
Panelists showed higher liking of apples cut with ultrasound.
- Taxon
- appleMalus domesticae0
- Treatment
- cut with ultrasounde4
- Outcome
- likinge4
- Direction
- highere4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“examined the quality of two apple varieties (Red Delicious and Golden Delicious) cut with ultrasound”
e4“In visual quality evaluation, panelists showed higher liking of the apples cut with ultrasound”
Claim · model-written summary
Ultrasound-assisted cutting may be used as an alternative to traditional cutting for fresh-cut apples.
- Taxon
- applesMalus domesticae5
- Outcome
- may be used as an alternative to traditional cutting methode5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“examined the quality of two apple varieties (Red Delicious and Golden Delicious) cut with ultrasound”
e5“The ultrasound-assisted cutting has showed promise for producing fresh-cut apples with improved quality, and may be used as an alternative to traditional cutting method”
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1 paper more in this group
See all 5 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.