Abstract
Effects of different concentrations of exogenous methyl jasmonate(Me JA) on postharvest quality and antioxidant activity in strawberries(Fragaria ananassa Duch cv. Fengxiang) are investigated. Strawberries are treated by Me JA(1 and100 μmol/L) at 25 ℃ for 9 h,then cooling for 2 h. After treatment,strawberries are stored under 5±1 ℃(90%~95%RH.). During storage period,3 boxes(30 fruits per box) are determinated for these indicators each 3 days. Results show that 1 μmol/L Me JA maintain higher content of TSS during later storage,significantly inhibit accumulation of reducing sugar during the whole period. 1 μmol/L Me JA significantly enhance activity of PAL,C4 H and delay the decrease in 4CL activity,thereby effectively increased levels of total phenolics and anthocyanins,improve DPPH radical scavenging activity. Those can maintain a high antioxidant capacity of fruits. The influence of 100 μmol/L Me JA on C4 H and 4CL activity in fruits is not significant. These results imply that properly low concentrations of Me JA evidently promoted the synthesis of phenolics and anthocyanins,maintain antioxidant activity through the regulation of key enzymes(including PAL,C4 H and 4CL) involve in phenols, anthocyanins and other antioxidants, thus finally improving the edible and nutritional quality of postharvest strawberries.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
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 9
Claim · model-written summary
1 μmol/L Me JA maintained higher TSS late in storage.
- Taxon
- Strawberries
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- 1 μmol/L Me JAe0
- Outcome
- content of TSSe0
- Direction
- highere0
- Qualifier
- during later storagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“1 μmol/L Me JA maintain higher content of TSS during later storage”
t0“Strawberries”
Claim · model-written summary
1 μmol/L Me JA significantly inhibited reducing-sugar accumulation throughout storage.
- Taxon
- StrawberriesFragaria ×ananassat0
- Treatment
- 1 μmol/L Me JAe0
- Outcome
- accumulation of reducing sugare0
- Direction
- inhibite0
- Qualifier
- during the whole periode0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1 μmol/L Me JA maintain higher content of TSS during later storage,significantly inhibit accumulation of reducing sugar during the whole period.”
t0“Strawberries”
Claim · model-written summary
1 μmol/L Me JA significantly enhanced PAL and C4 H activity.
- Taxon
- StrawberriesFragaria ×ananassat0
- Treatment
- 1 μmol/L Me JAe0
- Gene
- PAL,C4 He0
- Outcome
- activity of PAL,C4 He0
- Direction
- enhancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1 μmol/L Me JA significantly enhance activity of PAL,C4 H”
t0“Strawberries”
Claim · model-written summary
1 μmol/L Me JA delayed the decrease in 4CL activity.
- Taxon
- StrawberriesFragaria ×ananassat0
- Treatment
- 1 μmol/L Me JAe0
- Gene
- 4CLe0
- Outcome
- 4CL activitye0
- Direction
- delay the decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1 μmol/L Me JA significantly enhance activity of PAL,C4 H and delay the decrease in 4CL activity”
t0“Strawberries”
Claim · model-written summary
1 μmol/L Me JA increased total phenolics and anthocyanins.
- Taxon
- StrawberriesFragaria ×ananassat0
- Treatment
- 1 μmol/L Me JAe0
- Outcome
- levels of total phenolics and anthocyaninse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1 μmol/L Me JA significantly enhance activity of PAL,C4 H and delay the decrease in 4CL activity,thereby effectively increased levels of total phenolics and anthocyanins”
t0“Strawberries”
Claim · model-written summary
1 μmol/L Me JA improved DPPH radical scavenging activity.
- Taxon
- StrawberriesFragaria ×ananassat0
- Treatment
- 1 μmol/L Me JAe0
- Outcome
- DPPH radical scavenging activitye0
- Direction
- improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1 μmol/L Me JA significantly enhance activity of PAL,C4 H and delay the decrease in 4CL activity,thereby effectively increased levels of total phenolics and anthocyanins,improve DPPH radical scavenging activity.”
t0“Strawberries”
Claim · model-written summary
These treatment responses maintained high fruit antioxidant capacity.
- Taxon
- StrawberriesFragaria ×ananassat0
- Treatment
- 1 μmol/L Me JAe1
- Outcome
- antioxidant capacity of fruitse0
- Direction
- maintain a highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Those can maintain a high antioxidant capacity of fruits.”
e1“1 μmol/L Me JA significantly enhance activity of PAL,C4 H and delay the decrease in 4CL activity”
t0“Strawberries”
Claim · model-written summary
100 μmol/L Me JA did not significantly affect C4 H and 4CL activity.
- Taxon
- StrawberriesFragaria ×ananassat0
- Treatment
- 100 μmol/L Me JAe0
- Gene
- C4 H and 4CLe0
- Outcome
- C4 H and 4CL activitye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The influence of 100 μmol/L Me JA on C4 H and 4CL activity in fruits is not significant.”
t0“Strawberries”
Claim · model-written summary
The authors attribute maintained antioxidant activity and improved edible and nutritional quality to enzyme regulation by low Me JA concentrations.
- Taxon
- strawberriesFragaria ×ananassae0
- Treatment
- properly low concentrations of Me JAe0
- Gene
- PAL,C4 H and 4CLe0
- Outcome
- edible and nutritional qualitye0
- Direction
- improvinge0
- Qualifier
- regulation of key enzymese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“properly low concentrations of Me JA evidently promoted the synthesis of phenolics and anthocyanins,maintain antioxidant activity through the regulation of key enzymes(including PAL,C4 H and 4CL) involve in phenols, anthocyanins and other antioxidants, thus finally improving the edible and nutritional quality of postharvest strawberries.”
The same questions in other papers
jasmonic acid · quality: sugar starch · Fragaria x ananassa (strawberry)Positive and negative results
1 in the opposite direction
- no effect
jasmonic acid · quality: phytochemicals · Fragaria x ananassa (strawberry)Results agree
1 paper in the same direction as this paper
- 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.