Abstract
Abstract Tomatoes ( Lycopersicon esculentum ) (M82‐1‐8) grown hydroponically in a greenhouse experiment at 16 combinations of nitrate/chloride nutrient solutions were processed as juice and the canned product was stored at 22°C and 36°C for 27 months to study corrosion of the packs from the point of view of detinning or delamination of the internal lacquer and comparative retention of ascorbic acid content. Detinning in plain tinplate cans was greater with juices from tomatoes grown in high nitrate, low chloride solution as a result of the high nitrate content of tomatoes. Addition of chloride decreased the nitrate uptake of the tomatoes, thereby reducing detinning in plain cans significantly. A relevant positive correlation between detinning and high nitrate, high chloride nutrient regime after 27 months storage was attributed to an increase in total acid (as anhydrous citric acid) content of the respective juices and hence increased corrosivity. Delamination, with underfilm corrosion, in lacquered cans was correlated with tomatoes grown under a higher nitrate, medium chloride regime, giving medium levels of nitrate (0.30‐0.65 mmol litre −1 ) and chloride (20‐25 mmol litre −1 ) but higher levels of acidity (24‐37 mmol litre −1 citric acid) in the juice. Tomatoes grown under a higher nitrate, low chloride regime exhibited nitrate concentrations as high as 1.0 mmol litre −1 and high corrosivity. Tomatoes grown under low nitrate and increasing levels of chloride regimes gave juices containing as low as 0.18 mmol litre −1 of nitrate but higher chloride concentrations up to 42 mmol‐litre −1 ; no delamination was observed in lacquered cans of these juices but some pitting corrosion and perforations occurred at the end of 27 months at 36°C. Ascorbic acid retention was mainly correlated with the type of can as well as with the initial ascorbic acid level of the raw tomatoes, itself the result of the interaction of Cl − and NO 3 − in the nutrient solution. During 27 months storage, the ascorbic acid retention was consistently higher in tomato juice canned in plain tinplate cans (88 % at 22°C or 70% at 36°C) than in lacquered cans (24% at 22°C or 18% at 36°C).
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Claims 13
Claim · model-written summary
Detinning in plain tinplate cans was greater with juice from tomatoes grown in high nitrate, low chloride solution, due to their high nitrate content.
- Taxon
- tomatoes
Solanum lycopersicume0 - Treatment
- high nitrate, low chloride solutione0
- Outcome
- Detinning in plain tinplate canse0
- Direction
- greatere0
- Qualifier
- as a result of the high nitrate content of tomatoese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Detinning in plain tinplate cans was greater with juices from tomatoes grown in high nitrate, low chloride solution as a result of the high nitrate content of tomatoes”
Claim · model-written summary
Addition of chloride decreased the nitrate uptake of the tomatoes.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- Addition of chloridee0
- Outcome
- nitrate uptakee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of chloride decreased the nitrate uptake of the tomatoes”
Claim · model-written summary
Chloride addition significantly reduced detinning in plain cans.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- Addition of chloridee0
- Outcome
- detinning in plain canse0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of chloride decreased the nitrate uptake of the tomatoes, thereby reducing detinning in plain cans significantly”
Claim · model-written summary
Detinning correlated positively with a high nitrate, high chloride nutrient regime after 27 months storage, attributed to higher total acid in the juices.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- high nitrate, high chloride nutrient regimee0
- Outcome
- detinninge0
- Direction
- positive correlatione0
- Qualifier
- attributed to an increase in total acid (as anhydrous citric acid) content of the respective juicese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato juice”
e0“A relevant positive correlation between detinning and high nitrate, high chloride nutrient regime after 27 months storage was attributed to an increase in total acid (as anhydrous citric acid) content of the respective juices”
Claim · model-written summary
Delamination with underfilm corrosion in lacquered cans was correlated with tomatoes grown under a higher nitrate, medium chloride regime.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- higher nitrate, medium chloride regimee0
- Outcome
- Delaminatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato juice”
e0“Delamination, with underfilm corrosion, in lacquered cans was correlated with tomatoes grown under a higher nitrate, medium chloride regime”
Claim · model-written summary
Tomatoes grown under a higher nitrate, low chloride regime had nitrate concentrations as high as 1.0 mmol/litre and high corrosivity.
- Taxon
- TomatoesSolanum lycopersicume0
- Treatment
- higher nitrate, low chloride regimee0
- Outcome
- nitrate concentrationse0
- Direction
- highe0
- Value
- 1.0 mmol litre −1e0
- Qualifier
- high corrosivitye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomatoes grown under a higher nitrate, low chloride regime exhibited nitrate concentrations as high as 1.0 mmol litre −1 and high corrosivity”
Claim · model-written summary
Tomatoes grown under low nitrate and increasing chloride gave juices with nitrate as low as 0.18 mmol/litre.
- Taxon
- TomatoesSolanum lycopersicume0
- Treatment
- low nitrate and increasing levels of chloride regimese0
- Outcome
- nitratee0
- Direction
- lowe0
- Value
- 0.18 mmol litre −1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomatoes grown under low nitrate and increasing levels of chloride regimes gave juices containing as low as 0.18 mmol litre −1 of nitrate”
Claim · model-written summary
Under low nitrate and increasing chloride regimes, juices had higher chloride concentrations up to 42 mmol/litre.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- low nitrate and increasing levels of chloride regimese0
- Outcome
- chloride concentrationse0
- Direction
- highere0
- Value
- 42 mmol‐litre −1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato juice”
e0“low nitrate and increasing levels of chloride regimes gave juices containing as low as 0.18 mmol litre −1 of nitrate but higher chloride concentrations up to 42 mmol‐litre −1”
Claim · model-written summary
No delamination was observed in lacquered cans of juices from tomatoes grown under low nitrate and increasing chloride.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- delaminatione0
- Direction
- no delaminatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato juice”
e0“no delamination was observed in lacquered cans of these juices”
Claim · model-written summary
Some pitting corrosion and perforations occurred in lacquered cans of these juices at the end of 27 months at 36 C.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- pitting corrosion and perforationse0
- Qualifier
- at the end of 27 months at 36°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato juice”
e0“some pitting corrosion and perforations occurred at the end of 27 months at 36°C”
Claim · model-written summary
Ascorbic acid retention was mainly correlated with can type and the initial ascorbic acid level of the raw tomatoes, which resulted from Cl and NO3 interaction in the nutrient solution.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- type of cane0
- Outcome
- Ascorbic acid retentione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato juice”
e0“Ascorbic acid retention was mainly correlated with the type of can as well as with the initial ascorbic acid level of the raw tomatoes”
Claim · model-written summary
At 22 C over 27 months, ascorbic acid retention was higher in plain tinplate cans (88%) than in lacquered cans (24%).
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- plain tinplate canse0
- Outcome
- ascorbic acid retentione0
- Direction
- highere0
- Value
- 88 %e0
- Qualifier
- 24% at 22°Ce0
- Comparator
- lacquered canse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato juice”
e0“the ascorbic acid retention was consistently higher in tomato juice canned in plain tinplate cans (88 % at 22°C or 70% at 36°C) than in lacquered cans (24% at 22°C or 18% at 36°C)”
Claim · model-written summary
At 36 C over 27 months, ascorbic acid retention was higher in plain tinplate cans (70%) than in lacquered cans (18%).
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- plain tinplate canse0
- Outcome
- ascorbic acid retentione0
- Direction
- highere0
- Value
- 70%e0
- Qualifier
- 18% at 36°Ce0
- Comparator
- lacquered canse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato juice”
e0“the ascorbic acid retention was consistently higher in tomato juice canned in plain tinplate cans (88 % at 22°C or 70% at 36°C) than in lacquered cans (24% at 22°C or 18% at 36°C)”
The same questions in other papers
chloride · nutrient: content · Solanum lycopersicum (tomato)Positive and negative results
3 in the opposite direction
- no effect
- negative
- negative
nitrogen · nutrient: content · Solanum lycopersicum (tomato)Results differ
58 papers in the same direction as this paper · 17 in the opposite direction · 1 reporting no difference from an alternative
- positive
- negative
- no effect
73 papers more in this group
See all 77 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.