scholarly journals Ethylene Action Inhibitors Suppressed Clomeprop Metabolite (2-(2,4-Dichloro-m-Tolyloxy) Propionic Acid)-Induced Electrolyte Leakage from Radish Roots.

1996 ◽  
Vol 41 (3) ◽  
pp. 234-240
Author(s):  
Yukari Sunohara ◽  
Hiroshi Matsumoto ◽  
Kenji Usui ◽  
Kozo Ishizuka
Keyword(s):  
Propionic Acid ◽  
Electrolyte Leakage ◽  
Ethylene Action

scholarly journals 471 Tomato Fruit Treated with 1-methylcyclopropene Provide Adequate Non-ripening Controls in Low-temperature Storage Experiments

HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 526A-526 ◽  
Author(s):  
Domingos P. F. Almeida ◽  
Donald J. Huber
Keyword(s):  
Low Temperature ◽  
Electrolyte Leakage ◽  
Tomato Fruit ◽  
Chilling Injury ◽  
Low Temperature Storage ◽  
Injury Threshold ◽  
Temperature Regimes ◽  
Postharvest Handling ◽  
Ethylene Action ◽  
Temperature Storage

Chilling injury limits the postharvest handling of many fruit and vegetables. In low-temperature storage trials, control treatments typically consist of fruit stored above the injury threshold. Since chilling exposures for tomato fruit often exceed 2 weeks, controls stored above the threshold continue to ripen, confounding comparisons with fruit maintained at low temperatures. In this study, the ethylene action inhibitor 1-MCP was used to arrest ripening to permit more valid comparisons between fruit stored under the two temperature regimes. Mature-green tomatoes were treated with EthylBloc and then stored at 5 or 15 °C for 2 or 3 weeks after which time the fruit stored at 5 °C were transferred to 15 °C to allow the expression of injury symptoms. 1-MCP inhibited ripening of fruit stored at 15 °C for 2 to 3 weeks. Color, pericarp firmness, and pectin solubilization of MCP-treated fruit stored at 15 °C remained at the values of mature-green fruit, validating their use as controls for these physiological characteristics. After 2 to 3 weeks at 15 °C, MCP-treated fruit resumed normal ripening. Comparing the fruit removed from low-temperature storage with nonripening controls at 15 °C revealed that storage at 5 °C for 2 to 3 weeks decreased the hue (yellowing) but did not affect chroma or lightness, maintained firmness, and did not affect pectin metabolism. Electrolyte leakage increased or remained unaffected by cold storage. MCP-treated fruit had slightly higher electrolyte leakage than non-MCP-treated fruit after storage at either 5 or 15 °C. We conclude that MCP-treated fruit provide adequate controls in experiments designed to study many aspects of low-temperature storage.

scholarly journals Extended Shelf Life and Quality of Fresh-cut Papaya Derived from Ripe Fruit Treated with the Ethylene Antagonist 1-Methylcyclopropene

2006 ◽  
Vol 131 (1) ◽  
pp. 97-103 ◽  
Author(s):  
Muharrem Ergun ◽  
Donald J. Huber ◽  
Jiwon Jeong ◽  
Jerry A. Bartz
Keyword(s):  
Shelf Life ◽  
Ethylene Production ◽  
Electrolyte Leakage ◽  
Sampling Interval ◽  
Intact Control ◽  
Ethylene Action ◽  
Ethylene Antagonist ◽  
Fresh Cut

The purpose of the present study was to investigate the role of ethylene action, via use of the ethylene antagonist 1-methylcyclopropene (1-MCP), on the senescence and quality of fresh-cut ripe papaya (Carica papaya L. `Sunrise Solo') fruit. Ripe papaya fruit were treated with 2.5 μL·L-1 1-MCP and immediately processed into fresh-cut slices or left intact. At 2-day intervals over 10 days at 5 °C, continuously stored slices were monitored for ethylene production, firmness, electrolyte leakage, color, sensory changes, and pathogen incidence. Slices freshly prepared from intact fruit stored under identical conditions were measured similarly. Ethylene production did not differ significantly between the treatments, although production rates were slightly but consistently higher in slices from intact control compared with intact 1-MCP-treated fruit. Mesocarp firmness of continuously stored slices and slices from fruit stored intact was significantly retained by 1-MCP. Firmness of continuously stored slices from 1-MCP-treated fruit declined 50% compared with 75% for control slices. Firmness of fresh-cut slices prepared from intact control and 1-MCP-treated fruit at each sampling interval declined 26% and 15%, respectively. Electrolyte leakage remained low and changed little in slices freshly prepared from fruit stored intact. Leakage from continuously stored papaya slices increased after 4 days, and after 6 days controls increased significantly compared with stored slices derived from papaya fruit initially treated with the ethylene antagonist. The flesh color of continuously stored slices or slices prepared from fruit stored intact was influenced by 1-MCP only during the later periods of storage. Microbial counts in stored slices or slices prepared at each sampling were generally unaffected by 1-MCP. Informal sensory analysis indicated that the edible shelf life was 6 days in stored slices from 1-MCP-treated fruit compared with 2 to 3 days for stored slices from control fruit.

Evaluation of plant stress due to plasma-generated reactive oxygen and nitrogen species using electrolyte leakage

2020 ◽  
Vol 60 (1) ◽  
pp. 010504
Author(s):  
Keisuke Takashima ◽  
Ahmad Shahir bin Ahmad Nor ◽  
Sugihiro Ando ◽  
Hideki Takahashi ◽  
Toshiro Kaneko
Keyword(s):  
Electrolyte Leakage ◽  
Plant Stress ◽  
Reactive Oxygen ◽  
Nitrogen Species

Propionic Acid Shapes the Course of Multiple Sclerosis by a Distinct Immunomodulatory and Neuroprotective Mechanism

2018 ◽  
Author(s):  
Alexander Duscha ◽  
Barbara Gisevius ◽  
Sarah Hirschberg ◽  
Stefanie Haase ◽  
Gabriele I. Stangl ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Propionic Acid

Excess molar volumes of binary mixtures of acetic acid and propionic acid with some members of homologous series of alkanes

1991 ◽  
Vol 56 (4) ◽  
pp. 736-744 ◽  
Author(s):  
Ondřej Drábek ◽  
Ivan Cibulka
Keyword(s):  
Acetic Acid ◽  
Propionic Acid ◽  
Alkyl Chain ◽  
Excess Molar Volumes ◽  
Liquid Mixtures ◽  
Entire Concentration Range ◽  
Molar Volumes ◽  
Binary Liquid ◽  
Alkane Molecule ◽  
Increasing Temperature

Excess molar volumes of binary liquid mixtures of (acetic or propionic acid = hexane) at 25 and 35°C, and (acetic or propionic acid + heptane or octane) and (acetic acid + dodecane) at 25°C, measured with a tilting dilution dilatometer, are reported. The excess volumes are positive over the entire concentration range for all mixtures and increase with increasing length of an alkane molecule, decrease with increasing of the alkyl chain in a molecule of carboxylic acid, and increase with increasing temperature.

Vapour-liquid equilibrium in the ternary system cyclohexane-acetic acid-propionic acid

1989 ◽  
Vol 54 (11) ◽  
pp. 2840-2847 ◽  
Author(s):  
Ivona Malijevská ◽  
Alena Maštalková ◽  
Marie Sýsová
Keyword(s):  
Acetic Acid ◽  
Ternary System ◽  
Propionic Acid ◽  
Activity Coefficients ◽  
Error Propagation ◽  
Analytical Techniques ◽  
Liquid Equilibrium ◽  
Consistency Test ◽  
Propagation Law ◽  
Equilibrium Data

Isobaric equilibrium data (P = 101.3 kPa) for the system cyclohexane-acetic acid-propionic acid have been measured by two different analytical techniques. Activity coefficients calculated by simultaneous solving of equations for the chemical and phase equilibria were subjected to a consistency test based on inaccuracies determined from the error propagation law, and were correlated by Wilson’s equation. The activity coefficients measured were compared with those calculated from binary vapour-liquid equilibrium data and with values predicted by the UNIFAC method.

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