Abstract
Appropriate calcium treatments help maintain the appearance, nutritional quality, and postharvest quality of apples, reducing losses during storage. This study investigated the effects of different calcium preparations on the fresh-cut quality and ultrastructure of ‘Starkrimson’ apples. The treatments included control (CK), calcium chloride (T1), sorbitol-chelated calcium (T2), and calcium nitrate (T3). The results demonstrated that sorbitol-chelated calcium significantly inhibited the decline in fresh-cut firmness and pectin content while reducing the increase in cellulose content and minimizing ultrastructural damage. Apples treated with sorbitol-chelated calcium maintained the best fresh-cut hardness and soluble pectin contents, which were 35.71% and 15.42% higher than that of CK on the 12th day, and the cellulose was 27.08% lower than that of CK. Under transmission electron microscopy, the pulp cell surface in the T2 group remained intact, with no bending or deformation, and the middle lamella was well preserved. Additionally, T2 treatment promoted the expression of aroma-related genes during fruit storage. Sorbitol-chelated calcium effectively preserved color and significantly reduced the browning and microbial spoilage of fresh-cut apples, particularly postharvest pathogen growth. The study demonstrates that sorbitol-chelated calcium preserves fresh-cut apple quality by reinforcing cell wall integrity through calcium-mediated crosslinking, suppressing pectin degradation and cellulose accumulation, and activating aroma-related genes (AAT1, AAT2, LOX) to enhance volatile synthesis, thereby reducing microbial spoilage and enzymatic browning during storage.
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Claims 10
Claim · model-written summary
Sorbitol-chelated calcium significantly inhibited loss of fresh-cut firmness and pectin content.
- Taxon
- Apple
Malus domesticat0 - Material
- Starkrimsont0
- Treatment
- sorbitol-chelated calciume0
- Outcome
- fresh-cut firmness and pectin contente0
- Direction
- inhibited the declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Starkrimson Apple”
e0“sorbitol-chelated calcium significantly inhibited the decline in fresh-cut firmness and pectin content”
Claim · model-written summary
Sorbitol-chelated calcium reduced cellulose accumulation and ultrastructural damage.
- Taxon
- AppleMalus domesticat0
- Treatment
- sorbitol-chelated calciume0
- Outcome
- cellulose content and minimizing ultrastructural damagee0
- Direction
- reducing the increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Starkrimson Apple”
e0“sorbitol-chelated calcium significantly inhibited the decline in fresh-cut firmness and pectin content while reducing the increase in cellulose content and minimizing ultrastructural damage.”
Claim · model-written summary
T2 maintained fresh-cut hardness 35.71% above CK on day 12.
- Taxon
- AppleMalus domesticat0
- Treatment
- sorbitol-chelated calciume0
- Outcome
- fresh-cut hardnesse0
- Direction
- highere0
- Value
- 35.71%e0
- Qualifier
- on the 12th daye0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Starkrimson Apple”
e0“Apples treated with sorbitol-chelated calcium maintained the best fresh-cut hardness and soluble pectin contents, which were 35.71% and 15.42% higher than that of CK on the 12th day”
Claim · model-written summary
T2 maintained soluble pectin 15.42% above CK on day 12.
- Taxon
- AppleMalus domesticat0
- Treatment
- sorbitol-chelated calciume0
- Outcome
- soluble pectin contentse0
- Direction
- highere0
- Value
- 15.42%e0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Starkrimson Apple”
e0“Apples treated with sorbitol-chelated calcium maintained the best fresh-cut hardness and soluble pectin contents, which were 35.71% and 15.42% higher than that of CK on the 12th day”
Claim · model-written summary
T2 cellulose was 27.08% below CK.
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Starkrimson Apple”
e0“the cellulose was 27.08% lower than that of CK.”
Claim · model-written summary
T2 pulp cell surfaces remained intact and the middle lamella was preserved.
- Taxon
- AppleMalus domesticat0
- Material
- Starkrimsont0
- Outcome
- pulp cell surface in the T2 group remained intact, with no bending or deformation, and the middle lamella was well preservede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Starkrimson Apple”
e0“the pulp cell surface in the T2 group remained intact, with no bending or deformation, and the middle lamella was well preserved.”
Claim · model-written summary
T2 promoted expression of aroma-related genes during storage.
- Taxon
- AppleMalus domesticat0
- Treatment
- T2 treatmente0
- Outcome
- expression of aroma-related genese0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Starkrimson Apple”
e0“T2 treatment promoted the expression of aroma-related genes during fruit storage.”
Claim · model-written summary
Sorbitol-chelated calcium preserved color and reduced browning and microbial spoilage.
- Taxon
- AppleMalus domesticat0
- Treatment
- Sorbitol-chelated calciume0
- Interactor
- postharvest pathogene0pathogen
- Outcome
- browning and microbial spoilagee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Starkrimson Apple”
e0“Sorbitol-chelated calcium effectively preserved color and significantly reduced the browning and microbial spoilage of fresh-cut apples, particularly postharvest pathogen growth.”
Claim · model-written summary
The authors attribute quality preservation to calcium-mediated crosslinking and suppression of pectin degradation and cellulose accumulation.
- Taxon
- AppleMalus domesticat0
- Treatment
- sorbitol-chelated calciume0
- Outcome
- fresh-cut apple qualitye0
- Qualifier
- calcium-mediated crosslinkinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Starkrimson Apple”
e0“sorbitol-chelated calcium preserves fresh-cut apple quality by reinforcing cell wall integrity through calcium-mediated crosslinking, suppressing pectin degradation and cellulose accumulation”
Claim · model-written summary
The authors attribute volatile synthesis to activation of AAT1, AAT2, and LOX.
- Taxon
- AppleMalus domesticat0
- Gene
- AAT1, AAT2, LOXe0
- Outcome
- volatile synthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Starkrimson Apple”
e0“activating aroma-related genes (AAT1, AAT2, LOX) to enhance volatile synthesis”
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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.