Abstract
Weight-loss, general-appearante, yellowing, and compositions such as chlorophyll, carotenoid, vitamin C and nitrate, were studied to investigate the influence of pre-(cultivar and growing season) and post-(low-temperature and high-density polyethylene film packaging) harvest factors on the shelf-life and quality of leaf lettuce(Lactuca sativa L). Weight-loss was reduced by the treatment of high-density polyethylene film packaging, and more at than . Leaf-lettuce grown in Winter lost less fresh weight than that grown in Autumn. In experiment on difference between cultivars, the reduction of weight-loss in 'Cheongchima' lettuce was somewhat significant than that in 'Jeokchukmyeon' lettuce. The tendency of changes in general appearance was similar to that of weight-loss. The yellowing of leaf lettuce during the storage was caused by chlorophyll degradation. Vitamin C content before the storage was 128.0 mg/100 g FW. in lettuce grown in Winter, 123.8 mg/100g FW. in that grown in Autumn, and more 'Cheongchima' lettuce than 'Jeokchukmyeon' lettuce. In all treatment, vitamin C content decreased rapidly, and this tendency was more obvious at than . The nitrate content of 'Jeokchukmyeon' was 3812.6 ppm and that of 'Cheongchima' was 2855.6 ppm before the storage. Nitrate content decreased more at than during the storage.
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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 12
Claim · model-written summary
High-density polyethylene film packaging reduced lettuce weight loss.
- Taxon
- Leaf Lettucet0
- Treatment
- high-density polyethylene film packaginge0
- Outcome
- Weight-losse0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“Weight-loss was reduced by the treatment of high-density polyethylene film packaging”
t0“Leaf Lettuce”
Claim · model-written summary
Winter-grown lettuce lost less fresh weight than autumn-grown lettuce.
Verbatim
e0“Leaf-lettuce grown in Winter lost less fresh weight than that grown in Autumn”
Claim · model-written summary
Cheongchima lettuce had a somewhat greater reduction in weight loss than Jeokchukmyeon.
- Taxon
- lettuce
Lactuca sativae0 - Material
- Cheongchimae0
- Outcome
- weight-losse0
- Direction
- reductione0
- Comparator
- Jeokchukmyeone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the reduction of weight-loss in 'Cheongchima' lettuce was somewhat significant than that in 'Jeokchukmyeon' lettuce”
Claim · model-written summary
Changes in general appearance followed a pattern similar to weight loss.
Not reportedDirection
Verbatim
e0“The tendency of changes in general appearance was similar to that of weight-loss”
t0“Leaf Lettuce”
Claim · model-written summary
Chlorophyll degradation caused yellowing during lettuce storage.
Verbatim
e0“The yellowing of leaf lettuce during the storage was caused by chlorophyll degradation”
Claim · model-written summary
Before storage, winter-grown lettuce vitamin C content was 128.0 mg/100 g FW.
- Taxon
- lettuceLactuca sativae0
- Outcome
- Vitamin C contente0
- Value
- 128.0 mg/100 g FW.e0
- Setting
- Wintere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vitamin C content before the storage was 128.0 mg/100 g FW. in lettuce grown in Winter”
Claim · model-written summary
Before storage, autumn-grown lettuce vitamin C content was 123.8 mg/100g FW.
Verbatim
e0“123.8 mg/100g FW. in that grown in Autumn”
t0“Leaf Lettuce”
Claim · model-written summary
Before storage, Cheongchima had more vitamin C than Jeokchukmyeon.
- Taxon
- lettuceLactuca sativae0
- Material
- Cheongchimae0
- Outcome
- Vitamin C contente1
- Direction
- moree0
- Comparator
- Jeokchukmyeone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“more 'Cheongchima' lettuce than 'Jeokchukmyeon' lettuce”
e1“Vitamin C content before the storage”
Claim · model-written summary
Vitamin C content decreased rapidly in all treatments during storage.
Verbatim
e0“In all treatment, vitamin C content decreased rapidly”
t0“Leaf Lettuce”
Claim · model-written summary
Before storage, Jeokchukmyeon nitrate content was 3812.6 ppm.
Verbatim
e0“The nitrate content of 'Jeokchukmyeon' was 3812.6 ppm”
t0“Leaf Lettuce”
Claim · model-written summary
Before storage, Cheongchima nitrate content was 2855.6 ppm.
Verbatim
e0“that of 'Cheongchima' was 2855.6 ppm before the storage”
e1“Nitrate content”
t0“Leaf Lettuce”
Claim · model-written summary
Nitrate content decreased during storage, with the temperature comparison obscured by missing text.
Verbatim
e0“Nitrate content decreased more at than during the storage”
t0“Leaf Lettuce”
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13 papers in the same direction as this paper · 3 in the opposite direction
- negative
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See all 17 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.