Abstract
The present study compares different pre-treatments used to analyze free sugars and organic acids in strawberries. Soluble solid content, free sugars, and organic acid content in strawberries may vary depending on the pre-treatment methods used for analyze. A comparison of freshly squeezed juice and that obtained post freezing and thawing revealed a significant reduction in sucrose content in the once-frozen juice. However, no significant differences were observed in the soluble solids, glucose, and fructose contents. Furthermore, crushed flesh had significantly higher soluble solid, glucose, and fructose levels and lower sucrose content than those of the juice. Crushed flesh exhibited significantly higher citric acid and a lower malic acid content than those in the juice. There was a significant reduction in sucrose content in the freeze-dried samples compared to all other pre-treatments. Contrastingly, citric and malic acid levels were higher in the freeze-dried samples than that in the freshly crushed samples. The sucrose analytical values can be greatly decrease during the pre-treatment process. Therefore, differences in analytical methods should be considered when comparing sucrose content and composition.
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Claims 9
Claim · model-written summary
Freezing and thawing significantly reduced measured sucrose in strawberry juice.
- Taxon
- strawberries
_single2.jpg?width=60)
Fragaria ×ananassae1 - Treatment
- freezing and thawinge0
- Outcome
- sucrose contente0
- Direction
- reductione0
- Comparator
- freshly squeezed juicee0
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“A comparison of freshly squeezed juice and that obtained post freezing and thawing revealed a significant reduction in sucrose content in the once-frozen juice.”
e1“content of strawberries”
Claim · model-written summary
Freezing and thawing did not significantly change measured soluble solids, glucose or fructose.
- Taxon
- strawberriesFragaria ×ananassae2
- Treatment
- freezing and thawinge1
- Outcome
- soluble solids, glucose, and fructose contentse0
- Direction
- no significant differencese0
- Comparator
- freshly squeezed juicee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant differences were observed in the soluble solids, glucose, and fructose contents”
e1“freshly squeezed juice and that obtained post freezing and thawing”
e2“content of strawberries”
Claim · model-written summary
Crushed strawberry flesh had significantly higher soluble solids, glucose and fructose than juice.
- Taxon
- strawberriesFragaria ×ananassae2
- Treatment
- crushed fleshe0
- Outcome
- soluble solid, glucose, and fructose levelse0
- Direction
- highere0
- Comparator
- juicee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crushed flesh had significantly higher soluble solid, glucose, and fructose levels”
e1“than those of the juice”
e2“content of strawberries”
Claim · model-written summary
Crushed strawberry flesh had lower sucrose than juice.
- Taxon
- strawberriesFragaria ×ananassae2
- Treatment
- crushed fleshe1
- Outcome
- sucrose contente0
- Direction
- lowere0
- Comparator
- juicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lower sucrose content than those of the juice”
e1“crushed flesh”
e2“content of strawberries”
Claim · model-written summary
Crushed strawberry flesh had significantly higher citric acid than juice.
- Taxon
- strawberriesFragaria ×ananassae1
- Treatment
- Crushed fleshe0
- Outcome
- citric acide0
- Direction
- highere0
- Comparator
- juicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Crushed flesh exhibited significantly higher citric acid and a lower malic acid content than those in the juice.”
e1“content of strawberries”
Claim · model-written summary
Crushed strawberry flesh had lower malic acid than juice.
- Taxon
- strawberriesFragaria ×ananassae1
- Treatment
- Crushed fleshe0
- Outcome
- malic acid contente0
- Direction
- lowere0
- Comparator
- juicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Crushed flesh exhibited significantly higher citric acid and a lower malic acid content than those in the juice.”
e1“content of strawberries”
Claim · model-written summary
Freeze drying significantly reduced measured strawberry sucrose compared with every other pretreatment.
- Taxon
- strawberriesFragaria ×ananassae1
- Treatment
- freeze-dried samplese0
- Outcome
- sucrose contente0
- Direction
- reductione0
- Comparator
- all other pre-treatmentse0
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a significant reduction in sucrose content in the freeze-dried samples compared to all other pre-treatments”
e1“content of strawberries”
Claim · model-written summary
Freeze dried samples had higher citric and malic acid than freshly crushed samples.
- Taxon
- strawberriesFragaria ×ananassae1
- Treatment
- freeze-dried samplese0
- Outcome
- citric and malic acid levelse0
- Direction
- highere0
- Comparator
- freshly crushed samplese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“citric and malic acid levels were higher in the freeze-dried samples than that in the freshly crushed samples”
e1“content of strawberries”
Claim · model-written summary
The authors recommend considering analytical method differences when comparing sucrose measurements.
- Taxon
- strawberriesFragaria ×ananassae1
- Outcome
- differences in analytical methods should be considerede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“differences in analytical methods should be considered when comparing sucrose content and composition”
e1“content of strawberries”
The same questions in other papers
cold · quality: sugar starch · Fragaria x ananassa (strawberry)Positive and negative results
2 papers in the same direction as this paper · 6 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 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.