TITLE

Quality changes of green onions stored in modified atmosphere

AUTHOR(S)
Viškelis, Jonas
PUB. DATE
January 2012
SOURCE
Sodininkyste ir Darzininkyste;2012, Vol. 31 Issue 1/2, p40
SOURCE TYPE
Periodical
DOC. TYPE
Article
ABSTRACT
The aim of this investigation was to evaluate the influence of modified atmosphere on the quality of green onion cv. 'Parade'. Respiration rate, natural mass loss, and the influence of carbon dioxide on physiological parameters of green onions were analyzed. Additionally, total phenolics content and CIEL*a*b* colour coordinates of green onions were measured. The total phenolics content of green onions after 20 days of storage in modified atmosphere (10.0 % of CO2, temperature 0 ± 0.5 °C, relative humidity 95 %) reduced from 71.2 mg 100 g-1 to 66.5 mg 100 g-1, i. e. reduced only by 6.6 % from the initial phenolics content. There was no statistically significant difference between the radical scavenging capacity of green onions before and after storing them in modified atmosphere. After the storage in modified atmosphere the lightness index of green onions slightly increased (from 49.07 to 49.92), i. e. the onions became lighter, whereas the intensity of greenness slightly decreased (from -12.98 to -12.52). During green onion storage period the coordinate of yellowness increased (from 27.53 to 28.61), i. e. green onions were slightly more yellow after the storage. According to the results of this study, 20 days of storage in modified atmosphere does not have a significant negative effect on the quality of green onions.
ACCESSION #
93404201

 

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