Abstract
BACKGROUND: Lachrymatory factor (LF) synthase in onion bulbs reacts with S-1-propenyl-L-cysteine sulfoxide (1-PeCSO), a key compound in garlic greening. In this study, freeze-dried onion powder containing LF synthase was used in treatments to control garlic greening. Prior to the use of freeze-dried onion powder to treat greening garlic bulbs, model reactions were conducted to confirm the reactivity of 1-PeCSO in onion bulbs to garlic greening. RESULTS: While pink pigments were generated from 1-PeCSO, green pigments were produced from the combination of 1-PeCSO and S-2-propenyl-L-cysteine sulfoxide (2-PeCSO). However, pigments were formed in the systems containing 1-PeCSO, amino acid and alliinase. Even non-greening garlic bulbs stored at 20 °C turned green with the reaction of 200 g L(-1) 1-PeCSO; therefore 1-PeCSO isolated from onion bulbs had the same role as 1-PeCSO in garlic bulbs in terms of greening. Onion bulbs turned green after the addition of 600 g L(-1) 2-PeCSO. The addition of freeze-dried onion powder inhibited garlic greening, and treatment with 15 g kg(-1) onion powder gave the best storage stability of crushed garlic bulbs. CONCLUSION: The addition of freeze-dried onion powder inhibited the greening in crushed garlic bulbs, and treatment with 15 g kg(-1) onion powder gave the best storage stability of crushed garlic bulbs.
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Claims 8
Claim · model-written summary
Model reactions generated pink pigments from 1-PeCSO.
Not reportedTaxonComparatorDirection
Verbatim
e0“While pink pigments were generated from 1-PeCSO, green pigments were produced from the combination of 1-PeCSO and S-2-propenyl-L-cysteine sulfoxide (2-PeCSO).”
Claim · model-written summary
Model reactions generated green pigments from 1-PeCSO combined with 2-PeCSO.
- Treatment
- combination of 1-PeCSO and S-2-propenyl-L-cysteine sulfoxide (2-PeCSO)e0
- Outcome
- green pigmentse0
Not reportedTaxonComparatorDirection
Verbatim
e0“While pink pigments were generated from 1-PeCSO, green pigments were produced from the combination of 1-PeCSO and S-2-propenyl-L-cysteine sulfoxide (2-PeCSO).”
Claim · model-written summary
Pigments formed in systems containing 1-PeCSO, amino acid and alliinase.
- Gene
- alliinasee0
- Outcome
- pigments were formede0
- Qualifier
- systems containing 1-PeCSO, amino acid and alliinasee0
Not reportedTaxon
Verbatim
e0“However, pigments were formed in the systems containing 1-PeCSO, amino acid and alliinase.”
Claim · model-written summary
Non-greening garlic stored at 20 °C turned green with 200 g L(-1) 1-PeCSO.
- Taxon
- garlic
Allium sativume0 - Organ / stage
- bulbse0
- Treatment
- 200 g L(-1) 1-PeCSOe0
- Outcome
- turned greene0
- Qualifier
- stored at 20 °Ce0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Even non-greening garlic bulbs stored at 20 °C turned green with the reaction of 200 g L(-1) 1-PeCSO”
Claim · model-written summary
Onion-derived 1-PeCSO had the same greening role as garlic-derived 1-PeCSO.
- Taxon
- garlicAllium sativume0
- Compound
- 1-PeCSOe0
- Outcome
- greeninge0
- Qualifier
- 1-PeCSO isolated from onion bulbs had the same rolee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“therefore 1-PeCSO isolated from onion bulbs had the same role as 1-PeCSO in garlic bulbs in terms of greening.”
Claim · model-written summary
Onion bulbs turned green following 600 g L(-1) 2-PeCSO addition.
- Taxon
- Onion
Allium cepae0 - Organ / stage
- bulbse0
- Treatment
- 600 g L(-1) 2-PeCSOe0
- Outcome
- turned greene0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Onion bulbs turned green after the addition of 600 g L(-1) 2-PeCSO.”
Claim · model-written summary
Freeze-dried onion powder inhibited garlic greening.
- Taxon
- garlicAllium sativume0
- Treatment
- addition of freeze-dried onion powdere0
- Outcome
- garlic greeninge0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of freeze-dried onion powder inhibited garlic greening, and treatment with 15 g kg(-1) onion powder gave the best storage stability of crushed garlic bulbs.”
Claim · model-written summary
15 g kg(-1) onion powder gave the best crushed-garlic storage stability.
- Taxon
- garlicAllium sativume0
- Organ / stage
- crushed garlic bulbse0
- Treatment
- 15 g kg(-1) onion powdere0
- Outcome
- storage stabilitye0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of freeze-dried onion powder inhibited garlic greening, and treatment with 15 g kg(-1) onion powder gave the best storage stability of crushed garlic bulbs.”
The same questions in other papers
cold · organism · Allium sativum (garlic)Positive and negative results
1 in the opposite direction
- negative
botanical · organism · Allium sativum (garlic)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- 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.