Abstract
Quality of raspberry fruit experiences a rapid decline after harvest due to its vulnerable texture and high moisture content. Application of calcium chloride (CaCl2) combined with pectin methylesterase (PME) is efficient in delaying fruit softening. In this study, the effects of exogenous CaCl2 alone or in combination with PME on the structure of the cell wall, the molecular properties of pectin, and the amount of free water of raspberry during postharvest storage were investigated. The results showed that CaCl2 combined with PME treatment could maintain fruit firmness and inhibit weight loss. The treatment of CaCl2+PME maintained the cell wall structure via sustaining middle lamella integrity and reducing the activities of cell wall-degrading enzymes, such as polygalacturonase, pectin methylesterase, β-galactosidase, α-L-arabinofuranosidase, and β-xylosidase. In addition, CaCl2+PME treatment could effectively increase the content of chelate-soluble pectin (CSP) and develop a cross-linked structure between Ca2+ and CSP. Moreover, CaCl2+PME treatment was of benefit in maintaining free water content. CaCl2 in combination with PME treatment could be a promising method for inhibiting softening and maintaining the quality of postharvest raspberry during cold storage.
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Claims 9
Claim · model-written summary
CaCl2 combined with PME maintained raspberry fruit firmness during cold storage.
- Taxon
- Raspberryt0
- Treatment
- CaCl2 combined with PME treatmente1
- Outcome
- fruit firmnesse1
- Direction
- maintaine1
Not reportedComparator
Verbatim
t0“Fruit Softening of Raspberry during Cold Storage”
e1“The results showed that CaCl2 combined with PME treatment could maintain fruit firmness and inhibit weight loss”
Claim · model-written summary
CaCl2 combined with PME inhibited weight loss of raspberry fruit during cold storage.
Not reportedComparator
Verbatim
t0“Fruit Softening of Raspberry during Cold Storage”
e1“The results showed that CaCl2 combined with PME treatment could maintain fruit firmness and inhibit weight loss”
Claim · model-written summary
CaCl2+PME maintained the raspberry cell wall structure by sustaining middle lamella integrity.
Verbatim
t0“Fruit Softening of Raspberry during Cold Storage”
e2“The treatment of CaCl2+PME maintained the cell wall structure via sustaining middle lamella integrity”
Claim · model-written summary
CaCl2+PME reduced the activities of polygalacturonase, pectin methylesterase and β-galactosidase in raspberry fruit.
- Taxon
- Raspberryt0
- Treatment
- CaCl2+PMEe2
- Gene
- polygalacturonase, pectin methylesterase, β-galactosidasee3
- Outcome
- activities of cell wall-degrading enzymese3
- Direction
- reducinge3
Not reportedComparator
Verbatim
t0“Fruit Softening of Raspberry during Cold Storage”
e2“The treatment of CaCl2+PME maintained the cell wall structure via sustaining middle lamella integrity”
e3“reducing the activities of cell wall-degrading enzymes, such as polygalacturonase, pectin methylesterase, β-galactosidase”
Claim · model-written summary
CaCl2+PME reduced the activities of α-L-arabinofuranosidase and β-xylosidase in raspberry fruit.
- Taxon
- Raspberryt0
- Treatment
- CaCl2+PMEe2
- Gene
- α-L-arabinofuranosidase, and β-xylosidasee4
- Outcome
- activities of cell wall-degrading enzymese3
- Direction
- reducinge3
Not reportedComparator
Verbatim
t0“Fruit Softening of Raspberry during Cold Storage”
e2“The treatment of CaCl2+PME maintained the cell wall structure via sustaining middle lamella integrity”
e3“reducing the activities of cell wall-degrading enzymes, such as polygalacturonase, pectin methylesterase, β-galactosidase”
e4“α-L-arabinofuranosidase, and β-xylosidase”
Claim · model-written summary
CaCl2+PME increased the content of chelate-soluble pectin in raspberry fruit.
- Taxon
- Raspberryt0
- Treatment
- CaCl2+PME treatmente5
- Outcome
- content of chelate-soluble pectine5
- Direction
- increasee5
Not reportedComparator
Verbatim
t0“Fruit Softening of Raspberry during Cold Storage”
e5“CaCl2+PME treatment could effectively increase the content of chelate-soluble pectin (CSP)”
Claim · model-written summary
CaCl2+PME developed a cross-linked structure between Ca2+ and chelate-soluble pectin in raspberry.
Verbatim
t0“Fruit Softening of Raspberry during Cold Storage”
e6“develop a cross-linked structure between Ca2+ and CSP”
Claim · model-written summary
CaCl2+PME maintained the free water content of raspberry fruit.
Not reportedComparator
Verbatim
t0“Fruit Softening of Raspberry during Cold Storage”
e7“CaCl2+PME treatment was of benefit in maintaining free water content”
Claim · model-written summary
CaCl2 with PME could be a promising method for inhibiting softening of postharvest raspberry in cold storage.
Verbatim
e7“CaCl2 in combination with PME treatment could be a promising method for inhibiting softening and maintaining the quality of postharvest raspberry during cold storage”
The same questions in other papers
calcium chloride dihydrate · soil: physics · Rubus idaeus (red raspberry)Positive and negative results
1 in the opposite direction
- no effect
pectin · quality: postharvest · Rubus idaeus (red raspberry)Results agree
1 paper in the same direction as this paper
- positive
calcium chloride dihydrate · molecular: metabolites · Rubus idaeus (red raspberry)Results agree
2 papers in the same direction as this paper
- positive
- positive
calcium chloride dihydrate · quality: postharvest · Rubus idaeus (red raspberry)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.