Abstract
Mature turning tomato fruits (cv. ‘Thilina') were treated with four different concentrations of CaCl2 (0%, 2%, 4%, and 6% aqueous solutions) using different modes of application; dipping, vacuum infiltration and pressure infiltration, with a view to improve the shelf life and quality. Fruits vacuum infiltrated at -20 kPa and treated with the four different concentrations of CaCl2 were assessed for pH, total soluble solids (TSS) content, percentage titratable acidity (%TA) and firmness. Total calcium content in the inner and outer pericarp tissues was estimated and the path of calcium infiltration was revealed using black ink. Vacuum infiltration was found to be the most effective treatment with respect to shelf life extension. Also, 6% CaCl2 treatment at -20 kPa was the best in terms of extension of shelf life (by 92%) and in keeping the postharvest quality of tomatoes compared to the untreated fruits kept at 28°C. Fruit firmness significantly increased with CaCl2 application. Delay in fruit colour development, lowering of ethylene production rates and delay in the time taken to reach the ethylene climacteric were observed with increased CaCl2 concentration. Treatment with CaCl2 did not have a considerable effect on fruit pH, TSS or %TA. The amount of total calcium in the inner and outer pericarp regions increased significantly with calcium application. The stem end scar was found to be the main pathway of CaCl2 infiltration in to fruits. Key words: firmness; ethylene; ripening DOI: 10.4038/cjsbs.v39i1.2351 Cey. J. Sci. (Bio. Sci.) 39 (1): 35-44, 2010
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Claims 10
Claim · model-written summary
Vacuum infiltration was the most effective application method for extending tomato shelf life.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- Vacuum infiltratione0
- Outcome
- shelf life extensione0
- Direction
- most effectivee0
- Comparator
- dippinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vacuum infiltration was found to be the most effective treatment with respect to shelf life extension.”
t0“tomato”
e1“dipping, vacuum infiltration and pressure infiltration”
Claim · model-written summary
6% CaCl2 at -20 kPa extended tomato shelf life by 92% compared with untreated fruit at 28°C.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- 6% CaCl2 treatment at -20 kPae0
- Outcome
- extension of shelf lifee0
- Direction
- beste0
- Value
- 92%e0
- Qualifier
- 28°Ce0
- Comparator
- untreated fruitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“6% CaCl2 treatment at -20 kPa was the best in terms of extension of shelf life (by 92%) and in keeping the postharvest quality of tomatoes compared to the untreated fruits kept at 28°C.”
Claim · model-written summary
6% CaCl2 at -20 kPa best maintained tomato postharvest quality compared with untreated fruit at 28°C.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- 6% CaCl2 treatment at -20 kPae0
- Outcome
- postharvest qualitye0
- Direction
- beste0
- Qualifier
- 28°Ce0
- Comparator
- untreated fruitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“6% CaCl2 treatment at -20 kPa was the best in terms of extension of shelf life (by 92%) and in keeping the postharvest quality of tomatoes compared to the untreated fruits kept at 28°C.”
Claim · model-written summary
CaCl2 application significantly increased tomato fruit firmness.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- CaCl2 applicatione0
- Outcome
- Fruit firmnesse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit firmness significantly increased with CaCl2 application.”
t0“tomato”
Claim · model-written summary
Increasing CaCl2 concentration delayed tomato fruit colour development.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- increased CaCl2 concentratione0
- Outcome
- fruit colour developmente0
- Direction
- Delaye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delay in fruit colour development, lowering of ethylene production rates and delay in the time taken to reach the ethylene climacteric were observed with increased CaCl2 concentration.”
t0“tomato”
Claim · model-written summary
Increasing CaCl2 concentration lowered tomato ethylene production rates.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- increased CaCl2 concentratione0
- Outcome
- ethylene production ratese0
- Direction
- loweringe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delay in fruit colour development, lowering of ethylene production rates and delay in the time taken to reach the ethylene climacteric were observed with increased CaCl2 concentration.”
t0“tomato”
Claim · model-written summary
Increasing CaCl2 concentration delayed the tomato ethylene climacteric.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- increased CaCl2 concentratione0
- Outcome
- time taken to reach the ethylene climacterice0
- Direction
- delaye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delay in fruit colour development, lowering of ethylene production rates and delay in the time taken to reach the ethylene climacteric were observed with increased CaCl2 concentration.”
t0“tomato”
Claim · model-written summary
CaCl2 treatment had no considerable effect on tomato fruit pH, TSS or titratable acidity.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Treatment with CaCl2e0
- Outcome
- fruit pH, TSS or %TAe0
- Direction
- did not have a considerable effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with CaCl2 did not have a considerable effect on fruit pH, TSS or %TA.”
t0“tomato”
Claim · model-written summary
Calcium application significantly increased total calcium in inner and outer tomato pericarp.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- inner and outer pericarp regionse0
- Treatment
- calcium applicatione0
- Outcome
- amount of total calciume0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The amount of total calcium in the inner and outer pericarp regions increased significantly with calcium application.”
t0“tomato”
Claim · model-written summary
The stem end scar was the main pathway for CaCl2 infiltration into tomato fruits.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- stem end scare0
- Outcome
- main pathway of CaCl2 infiltratione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The stem end scar was found to be the main pathway of CaCl2 infiltration in to fruits.”
t0“tomato”
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See all 7 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.