Abstract
The mechanism of functional disorder caused by treatments with MH, KCN, acetaldehyde and/or by enclosing in desiccator was studied with onion bulbs (Yellow Danvers Flat) during the storage period. The experimental results are outlined as follows; (1) In the tissues received fungal infection and functional disorder, the accumulation of ethyl alcohol and acetaldehyde were found, and the acetaldehyde reaction with SCHIFF's agent was strongly positive in the bulbs injured severely. (2) The total sugar content was decreasing with the advance of disorder, and the decrease of sugar content was always lower in different degrees, when sudden disorder was induced by artificial treatments above mentioned. (3) The total content of ascorbic acid was little decreasing during the development of functional disorder, whereas l-ascorbic acid was oxidized to dehydroascorbic acid. (4) With increasing degree of disorder, the inceased O2 uptake and CO2 output were evident in the disk part, both reaching to the peak and then rapidly decreasing to an extent much lower than the normal material. (5) The variations of the activity of catalase and peroxidase in the disk part were showing the same tendency as that of the gas exchange pointed out in (4). (6) The acetaldehyde of certain concentration inhibited the dehydrogenase activity in disk part, in vitro as well as in vivo. (7) Judging from the results given above, it appears that the onions stored under such environ-mental condition in which the dehydrogenase activity in TCA cycle was inhibited, show an accumulation of acetaldehyde in their tissues and this must be an immediate cause of functional disorder of onions in storage.
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Claims 10
Claim · model-written summary
In infected, disordered onion tissue, ethyl alcohol and acetaldehyde accumulated.
Not reportedInteractor
Verbatim
e0“In the tissues received fungal infection and functional disorder, the accumulation of ethyl alcohol and acetaldehyde were found”
e1“The mechanism of functional disorder caused by treatments with MH, KCN, acetaldehyde and/or by enclosing in desiccator was studied with onion bulbs (Yellow Danvers Flat) during the storage period.”
Claim · model-written summary
Severely injured bulbs had a strongly positive acetaldehyde reaction with SCHIFF agent.
Verbatim
e0“the acetaldehyde reaction with SCHIFF's agent was strongly positive in the bulbs injured severely”
e1“The mechanism of functional disorder caused by treatments with MH, KCN, acetaldehyde and/or by enclosing in desiccator was studied with onion bulbs (Yellow Danvers Flat) during the storage period.”
Claim · model-written summary
Total sugar content declined as disorder advanced.
Verbatim
e0“The total sugar content was decreasing with the advance of disorder”
e1“The mechanism of functional disorder caused by treatments with MH, KCN, acetaldehyde and/or by enclosing in desiccator was studied with onion bulbs (Yellow Danvers Flat) during the storage period.”
Claim · model-written summary
Artificially induced sudden disorder had a smaller sugar content decrease.
- Taxon
- onion bulbse1
- Treatment
- artificial treatments above mentionede0
- Outcome
- decrease of sugar contente0
- Direction
- lowere0
Not reportedComparator
Verbatim
e0“the decrease of sugar content was always lower in different degrees, when sudden disorder was induced by artificial treatments above mentioned”
e1“The mechanism of functional disorder caused by treatments with MH, KCN, acetaldehyde and/or by enclosing in desiccator was studied with onion bulbs (Yellow Danvers Flat) during the storage period.”
Claim · model-written summary
Total ascorbic acid content decreased slightly during disorder development.
Verbatim
e0“The total content of ascorbic acid was little decreasing during the development of functional disorder”
e1“The mechanism of functional disorder caused by treatments with MH, KCN, acetaldehyde and/or by enclosing in desiccator was studied with onion bulbs (Yellow Danvers Flat) during the storage period.”
Claim · model-written summary
l-ascorbic acid was oxidized to dehydroascorbic acid during disorder.
Not reportedDirection
Verbatim
e0“l-ascorbic acid was oxidized to dehydroascorbic acid”
e1“The mechanism of functional disorder caused by treatments with MH, KCN, acetaldehyde and/or by enclosing in desiccator was studied with onion bulbs (Yellow Danvers Flat) during the storage period.”
Claim · model-written summary
O2 uptake and CO2 output rose to a peak then fell below normal material in the disk.
Verbatim
e0“the inceased O2 uptake and CO2 output were evident in the disk part, both reaching to the peak and then rapidly decreasing to an extent much lower than the normal material”
e1“The mechanism of functional disorder caused by treatments with MH, KCN, acetaldehyde and/or by enclosing in desiccator was studied with onion bulbs (Yellow Danvers Flat) during the storage period.”
Claim · model-written summary
Catalase and peroxidase activities varied like gas exchange in the disk.
Not reportedDirection
Verbatim
e0“The variations of the activity of catalase and peroxidase in the disk part were showing the same tendency as that of the gas exchange”
e1“The mechanism of functional disorder caused by treatments with MH, KCN, acetaldehyde and/or by enclosing in desiccator was studied with onion bulbs (Yellow Danvers Flat) during the storage period.”
Claim · model-written summary
Acetaldehyde inhibited disk dehydrogenase activity in vitro and in vivo.
- Taxon
- onion bulbse1
- Organ / stage
- disk parte0
- Treatment
- acetaldehyde of certain concentratione0
- Outcome
- dehydrogenase activitye0
- Direction
- inhibitede0
Not reportedComparator
Verbatim
e0“The acetaldehyde of certain concentration inhibited the dehydrogenase activity in disk part, in vitro as well as in vivo.”
e1“The mechanism of functional disorder caused by treatments with MH, KCN, acetaldehyde and/or by enclosing in desiccator was studied with onion bulbs (Yellow Danvers Flat) during the storage period.”
Claim · model-written summary
Authors interpret inhibited TCA dehydrogenase as causing acetaldehyde buildup and onion disorder in storage.
- Taxon
- onions
Allium cepae0 - Outcome
- functional disorder of onions in storagee0
- Qualifier
- dehydrogenase activity in TCA cycle was inhibitede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the onions stored under such environ-mental condition in which the dehydrogenase activity in TCA cycle was inhibited, show an accumulation of acetaldehyde in their tissues and this must be an immediate cause of functional disorder of onions in storage”