Reduced greasiness of ‘Granny Smith’ apples washed in Tween 20 solution
作者:
B. K. Dadzie,
N. H. Banks,
E. W. Hewett,
D. J. Cleland,
期刊:
New Zealand Journal of Crop and Horticultural Science
(Taylor Available online 1995)
卷期:
Volume 23,
issue 2
页码: 219-222
ISSN:0114-0671
年代: 1995
DOI:10.1080/01140671.1995.9513890
出版商: Taylor & Francis Group
关键词: apple;Malus domestica;skin permeance;internal atmosphere;oxygen;carbon dioxide;ethylene;respiration;firmness;colour
数据来源: Taylor
摘要:
‘Granny Smith’ apples (Malus domesticaBorkh.) tend to develop greasy skins after extended storage which makes them slippery to touch and reduces their aesthetic appeal. Washing fruit in 0.15% (w/w) Tween 20 surfactant solution reduced greasiness, loss of greenness, and firmness after 22 days at 20°C. These effects were associated with decreased skin permeance to gases, depressed internal oxygen (O2) partial pressure and respiration, and increased internal partial pressure of ethylene, in washed compared to control fruit. Washing depressed the sum of O2and carbon dioxide partial pressures, suggesting that this treatment enhanced differential permeability characteristics of the fruit skin. Pre‐treatment by wiping without using Tween 20 solution had none of these effects but stimulated weight loss. The potential for using a surface coating to delay the development of greasiness in stored apples should be re‐examined.
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