Abstract
Abstract Root cultures of Allium cepa L. (onion) were fed potential precursors in the sulfate reduction pathway to the (+) ‐ S ‐alk(en) yl‐ l ‐cysteine sulfoxides (RCSOs) which are flavor precursors in Allium sp. Sulfate, valine, and methacrylic acid did not increase RCSO production, indicating that these steps were not rate limiting. Cysteine, glutathione, and methionine could increase both the methyl‐ and propenylcysteine sulfoxides. The ratio of the propenyl to methyl form could be dramatically altered (over a range of 8.5) depending on the amount and type of precursor used. Additionally, novel flavor components, not normally found in A. cepa L., were made in substantial amounts by feeding the corresponding thiol (propyl, 2‐propenyl (allyl), and ethyl) . These results demonstrate that customized flavor profiles can be produced from Allium root cultures and provide an example of the use of plant cell cultures to produce novel metabolites.
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Claims 10
Claim · model-written summary
Sulfate did not increase RCSO production.
Not reportedTaxonComparator
Verbatim
e0“Sulfate, valine, and methacrylic acid did not increase RCSO production”
Claim · model-written summary
Valine did not increase RCSO production.
Not reportedTaxonComparator
Verbatim
e0“Sulfate, valine, and methacrylic acid did not increase RCSO production”
Claim · model-written summary
Methacrylic acid did not increase RCSO production.
Not reportedTaxonComparator
Verbatim
e0“Sulfate, valine, and methacrylic acid did not increase RCSO production”
Claim · model-written summary
Cysteine could increase both methyl- and propenylcysteine sulfoxides.
Not reportedTaxonComparator
Verbatim
e0“Cysteine, glutathione, and methionine could increase both the methyl‐ and propenylcysteine sulfoxides.”
Claim · model-written summary
Glutathione could increase both sulfoxides.
Not reportedTaxonComparator
Verbatim
e0“Cysteine, glutathione, and methionine could increase both the methyl‐ and propenylcysteine sulfoxides.”
Claim · model-written summary
Methionine could increase both sulfoxides.
Not reportedTaxonComparator
Verbatim
e0“Cysteine, glutathione, and methionine could increase both the methyl‐ and propenylcysteine sulfoxides.”
Claim · model-written summary
Precursor amount and type altered the propenyl-to-methyl ratio over a range of 8.5.
Not reportedTaxonDirection
Verbatim
e0“The ratio of the propenyl to methyl form could be dramatically altered (over a range of 8.5) depending on the amount and type of precursor used.”
Claim · model-written summary
Propyl thiol feeding produced a novel flavor component.
- Taxon
- A. cepa L.
Allium cepae0 - Treatment
- propyle0
- Outcome
- novel flavor componentse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“novel flavor components, not normally found in A. cepa L., were made in substantial amounts by feeding the corresponding thiol (propyl, 2‐propenyl (allyl), and ethyl)”
Claim · model-written summary
Allyl thiol feeding produced a novel flavor component.
- Taxon
- A. cepa L.Allium cepae0
- Treatment
- 2‐propenyl (allyl)e0
- Outcome
- novel flavor componentse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“novel flavor components, not normally found in A. cepa L., were made in substantial amounts by feeding the corresponding thiol (propyl, 2‐propenyl (allyl), and ethyl)”
Claim · model-written summary
Ethyl thiol feeding produced a novel flavor component.
- Taxon
- A. cepa L.Allium cepae0
- Treatment
- ethyle0
- Outcome
- novel flavor componentse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“novel flavor components, not normally found in A. cepa L., were made in substantial amounts by feeding the corresponding thiol (propyl, 2‐propenyl (allyl), and ethyl)”
The same questions in other papers
sulfate · yield · Allium cepa (onion)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →methionine · molecular: metabolites · Allium cepa (onion)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.