Abstract
The purpose of this study was a comparative examination of the fructan and fructooligosaccharide (FOS) content of different varieties of onions (Allium cepa L. cv. Sturon, Hysam, Durco, Grano de Oro, and Caribo) and the changes produced during their commercial storage. In fresh onions, the Grano de Oro variety presented a remarkably different behavior, showing low contents of total fructans and FOS and high levels of reducing sugars. In the other varieties, Sturon, Hysam, Durco, and Caribo, fructans were the main carbohydrates, the lowest polymerized FOS being the major oligomer. Storage period caused in these varieties important increased levels of free fructose attributed to fructan hydrolysis. Maleic hydrazide treatment had no significant effect in avoiding the hydrolysis of fructans during storage conditions for the Sturon variety. Varieties with >16% dry matter or 15% soluble solids contents could be stored for 6 months at 0 degrees C and 60-65% relative humidity.
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Claims 6
Claim · model-written summary
Fresh Grano de Oro onions had low total fructans and fructooligosaccharides.
- Taxon
- onions
Allium cepae0 - Material
- Grano de Oroe0
- Outcome
- contents of total fructans and FOSe0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In fresh onions, the Grano de Oro variety presented a remarkably different behavior, showing low contents of total fructans and FOS and high levels of reducing sugars.”
Claim · model-written summary
Fresh Grano de Oro onions had high reducing sugar levels.
- Taxon
- onionsAllium cepae0
- Material
- Grano de Oroe0
- Outcome
- levels of reducing sugarse0
- Direction
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In fresh onions, the Grano de Oro variety presented a remarkably different behavior, showing low contents of total fructans and FOS and high levels of reducing sugars.”
Claim · model-written summary
Fructans were the main carbohydrates in Sturon, Hysam, Durco and Caribo onions, with the lowest polymerized FOS the major oligomer.
- Taxon
- onionsAllium cepae1
- Material
- Sturon, Hysam, Durco, and Cariboe0
- Outcome
- fructans were the main carbohydrates, the lowest polymerized FOS being the major oligomere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the other varieties, Sturon, Hysam, Durco, and Caribo, fructans were the main carbohydrates, the lowest polymerized FOS being the major oligomer.”
e1“onions (Allium cepa L.”
Claim · model-written summary
Storage increased free fructose in Sturon, Hysam, Durco and Caribo, attributed to fructan hydrolysis.
- Taxon
- onionsAllium cepae2
- Material
- Sturon, Hysam, Durco, and Cariboe1
- Treatment
- Storage periode0
- Outcome
- levels of free fructosee0
- Direction
- increasede0
- Qualifier
- attributed to fructan hydrolysise0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Storage period caused in these varieties important increased levels of free fructose attributed to fructan hydrolysis.”
e1“Sturon, Hysam, Durco, and Caribo”
e2“onions (Allium cepa L.”
Claim · model-written summary
Maleic hydrazide had no significant effect on fructan hydrolysis during Sturon storage.
- Taxon
- onionsAllium cepae1
- Material
- Sturone0
- Treatment
- Maleic hydrazide treatmente0
- Outcome
- hydrolysis of fructanse0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maleic hydrazide treatment had no significant effect in avoiding the hydrolysis of fructans during storage conditions for the Sturon variety.”
e1“onions (Allium cepa L.”
Claim · model-written summary
Varieties above 16% dry matter or 15% soluble solids could be stored for six months at 0 degrees C and 60-65% relative humidity.
- Taxon
- onionsAllium cepae1
- Outcome
- could be stored for 6 monthse0
- Value
- 6 monthse0
- Qualifier
- >16% dry matter or 15% soluble solids contentse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Varieties with >16% dry matter or 15% soluble solids contents could be stored for 6 months at 0 degrees C and 60-65% relative humidity.”
e1“onions (Allium cepa L.”
The same questions in other papers
Maleic hydrazide · molecular: metabolites · Allium cepa (onion)Results agree
1 paper in the same direction as this paper
- no effect
storage · molecular: metabolites · Allium cepa (onion)Positive and negative results
5 papers in the same direction as this paper · 3 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.