Abstract
Abstract Background The degree to which storage conditions and duration affect phytase activity and inositol phosphates (InsP) was evaluated in wheat. Three wheat cultivars were stored as whole or ground kernels at 20, 7, and −18°C for 13, 48, 118, 188, 265, and 349 days. Samples were analyzed for InsP 3‐6 concentration and phytase activity. Results The InsP 6 concentration of whole wheat kernels stored at −18 and 7°C did not differ from that at time point 0. Storage of whole kernels at 20°C significantly reduced the InsP 6 concentration at days 48, 188, 265, and 349, by up to 8.4%. The InsP 6 concentration of ground wheat samples was reduced by up to 23.6% until day 349. The lower InsP isomers Ins(1,2,3,4,5)P 5 and Ins(1,2,4,5,6)P 5 were detected only at a storage temperature of 20°C and at day 118 or later. Phytase activity did not change over time in ground kernels stored at −18 and +7°C but was decreased in ground kernels at 20°C and in whole kernels independent of temperature. Probable cultivar effects were found regarding phytase activity over time, dependent on grinding and storage temperature. Conclusion To avoid loss of InsP 6 content, wheat samples should be stored as whole kernels at or below 7°C. Phytase activity is more stable in ground samples than in whole kernels. However, some cultivars likely are more prone than others to storage effects.
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Claims 11
Claim · model-written summary
Phytate (InsP 6) concentration of whole kernels stored at −18 and 7°C did not differ from time point 0.
- Taxon
- wheat
Triticum aestivume1 - Organ / stage
- whole wheat kernelse1
- Treatment
- stored at −18 and 7°Ce1
- Outcome
- InsP 6 concentratione1
- Direction
- did not differe1
- Comparator
- time point 0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The InsP 6 concentration of whole wheat kernels stored at −18 and 7°C did not differ from that at time point 0”
t0“phytase activity of wheat grains”
Claim · model-written summary
Storing whole kernels at 20°C significantly reduced InsP 6 concentration by up to 8.4% at days 48 to 349.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- whole kernelse1
- Treatment
- Storage of whole kernels at 20°Ce1
- Outcome
- InsP 6 concentratione1
- Direction
- reducede1
- Value
- 8.4%e1
- Qualifier
- at days 48, 188, 265, and 349e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Storage of whole kernels at 20°C significantly reduced the InsP 6 concentration at days 48, 188, 265, and 349, by up to 8.4%”
t0“phytase activity of wheat grains”
Claim · model-written summary
InsP 6 concentration of ground wheat samples was reduced by up to 23.6% until day 349.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- ground wheat samplese1
- Outcome
- InsP 6 concentratione1
- Direction
- reducede1
- Value
- 23.6%e1
- Qualifier
- until day 349e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The InsP 6 concentration of ground wheat samples was reduced by up to 23.6% until day 349”
t0“phytase activity of wheat grains”
Claim · model-written summary
Lower InsP isomers were detected only at 20°C and from day 118 or later.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- a storage temperature of 20°Ce1
- Outcome
- lower InsP isomerse1
- Qualifier
- at day 118 or latere1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The lower InsP isomers Ins(1,2,3,4,5)P 5 and Ins(1,2,4,5,6)P 5 were detected only at a storage temperature of 20°C and at day 118 or later”
t0“phytase activity of wheat grains”
Claim · model-written summary
Phytase activity in ground kernels did not change over time at −18 and +7°C.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- ground kernelse1
- Treatment
- stored at −18 and +7°Ce1
- Outcome
- Phytase activitye1
- Direction
- did not changee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Phytase activity did not change over time in ground kernels stored at −18 and +7°C but was decreased in ground kernels at 20°C and in whole kernels independent of temperature”
t0“phytase activity of wheat grains”
Claim · model-written summary
Phytase activity was decreased in ground kernels stored at 20°C.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- ground kernelse1
- Treatment
- at 20°Ce1
- Outcome
- Phytase activitye1
- Direction
- decreasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Phytase activity did not change over time in ground kernels stored at −18 and +7°C but was decreased in ground kernels at 20°C and in whole kernels independent of temperature”
t0“phytase activity of wheat grains”
Claim · model-written summary
Phytase activity was decreased in whole kernels independent of storage temperature.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- whole kernelse1
- Treatment
- independent of temperaturee1
- Outcome
- Phytase activitye1
- Direction
- decreasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Phytase activity did not change over time in ground kernels stored at −18 and +7°C but was decreased in ground kernels at 20°C and in whole kernels independent of temperature”
t0“phytase activity of wheat grains”
Claim · model-written summary
Probable cultivar effects on phytase activity over time depend on grinding and storage temperature.
- Taxon
- wheatTriticum aestivumt0
- Material
- cultivare1
- Treatment
- grinding and storage temperaturee1
- Outcome
- phytase activity over timee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Probable cultivar effects were found regarding phytase activity over time, dependent on grinding and storage temperature”
t0“phytase activity of wheat grains”
Claim · model-written summary
Phytase activity is more stable in ground samples than in whole kernels.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- ground samplese1
- Outcome
- Phytase activitye1
- Direction
- more stablee1
- Comparator
- whole kernelse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Phytase activity is more stable in ground samples than in whole kernels”
t0“phytase activity of wheat grains”
Claim · model-written summary
To avoid loss of InsP 6 content, wheat samples should be stored as whole kernels at or below 7°C.
- Taxon
- wheatTriticum aestivume1
- Treatment
- stored as whole kernels at or below 7°Ce1
- Outcome
- loss of InsP 6 contente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“To avoid loss of InsP 6 content, wheat samples should be stored as whole kernels at or below 7°C”
Claim · model-written summary
Some cultivars are likely more prone than others to storage effects.
- Taxon
- wheatTriticum aestivumt0
- Material
- some cultivarse1
- Outcome
- storage effectse1
- Direction
- more pronee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“some cultivars likely are more prone than others to storage effects”
t0“phytase activity of wheat grains”
The same questions in other papers
storage · molecular: metabolites · Triticum aestivum (wheat)Positive and negative results
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See all 5 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.