Abstract
Changes in chlorophyll, carotenoid, ascorbic acid, and glutathione levels were determined during broccoli storage in 9 controlled atmospheres ranging from 0 to 10% O2 and 2 to 20% CO2 concentrations. In low O2 concentration, the level of glutathione decreased, whereas in high O2 and low CO2 concentrations, the level of chlorophyll and ascorbic acid decreased significantly. A mixture of 2% O2 and 4 to 10% CO2 was found to be optimum for simultaneous maintenance of pigments, ascorbic acid, and glutathione. Respiration models were developed as functions of storage time and O2 and CO2 concentrations using a multiple regression analysis based on these gas compositions. When the modified atmosphere gas environment inside a broccoli package was simulated, an optimum gas condition of 2% O2 and 5% CO2 was derived using a film having a 1, 000 ml/day/atm O2 transmission rate. Simulation result agreed well with experimental data.
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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Low oxygen decreased glutathione during broccoli storage.
- Taxon
- broccoli
Brassica oleracea var. italicae1 - Treatment
- low O2 concentratione0
- Outcome
- level of glutathionee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In low O2 concentration, the level of glutathione decreased”
e1“broccoli storage”
Claim · model-written summary
High oxygen and low carbon dioxide significantly decreased chlorophyll and ascorbic acid.
- Taxon
- broccoliBrassica oleracea var. italicae1
- Treatment
- high O2 and low CO2 concentrationse0
- Outcome
- level of chlorophyll and ascorbic acide0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in high O2 and low CO2 concentrations, the level of chlorophyll and ascorbic acid decreased significantly”
e1“broccoli storage”
Claim · model-written summary
A 2% oxygen and 4 to 10% carbon dioxide mixture best maintained pigments, ascorbic acid and glutathione.
- Taxon
- broccoliBrassica oleracea var. italicae1
- Treatment
- A mixture of 2% O2 and 4 to 10% CO2e0
- Outcome
- simultaneous maintenance of pigments, ascorbic acid, and glutathionee0
- Direction
- optimume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A mixture of 2% O2 and 4 to 10% CO2 was found to be optimum for simultaneous maintenance of pigments, ascorbic acid, and glutathione.”
e1“broccoli storage”
Claim · model-written summary
Package simulation derived an optimum atmosphere of 2% oxygen and 5% carbon dioxide with a specified film.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Outcome
- optimum gas conditione0
- Value
- 2% O2 and 5% CO2e0
- Qualifier
- a film having a 1, 000 ml/day/atm O2 transmission ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the modified atmosphere gas environment inside a broccoli package was simulated, an optimum gas condition of 2% O2 and 5% CO2 was derived using a film having a 1, 000 ml/day/atm O2 transmission rate.”
Claim · model-written summary
The simulation agreed well with experimental data.
- Taxon
- broccoliBrassica oleracea var. italicae1
- Outcome
- Simulation result agreed welle0
- Comparator
- experimental datae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Simulation result agreed well with experimental data.”
e1“broccoli package”
The same questions in other papers
co2 · physiology: pigments · Brassica oleracea (wild cabbage)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
4 papers more in this group
See all 8 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.