Effect of UV-C treatment on chlorophyll degradation antioxidant enzyme activities and senescence in Chinese kale (Brassica oleracea var. alboglabra)

Nutthachai P., . and Chairat B, . and Varit S, . Effect of UV-C treatment on chlorophyll degradation antioxidant enzyme activities and senescence in Chinese kale (Brassica oleracea var. alboglabra). pp. 623-628. ISSN 22317546

The changes in chlorophyll content antioxidant enzyme activities and senescence in Chinese kale (Brassica oleracea var. alboglaba) irradiated with different UV-C dosages (1.8 3.6 5.4 and 7.2 kJ m-2) were determined during storage at 20C. The irradiation dose of 3.6 and 5.4 kJ m-2 delayed leaf yellowing depicted as higher hue values and chlorophyll contents and lower activity of chlorophyllase Mg-dechelatase and chlorophyll-degrading peroxidase as compared to the other treatments. Similarly UV-C treatment delayed the decrease in activities of antioxidant enzymes particularly peroxidase (POD) and superoxide dismutase (SOD). It also reduced ethylene production and respiration rates. The results indicate that UV-C irradiation could be a useful non-chemical treatment to delay senscence and improve shelf life of Chinese kale.

Full text available from: Official URL: http://ifrj.upm.edu.my/20%20(02)%202013/17%20IFRJ%...

Abstract

The changes in chlorophyll content antioxidant enzyme activities and senescence in Chinese kale (Brassica oleracea var. alboglaba) irradiated with different UV-C dosages (1.8 3.6 5.4 and 7.2 kJ m-2) were determined during storage at 20C. The irradiation dose of 3.6 and 5.4 kJ m-2 delayed leaf yellowing depicted as higher hue values and chlorophyll contents and lower activity of chlorophyllase Mg-dechelatase and chlorophyll-degrading peroxidase as compared to the other treatments. Similarly UV-C treatment delayed the decrease in activities of antioxidant enzymes particularly peroxidase (POD) and superoxide dismutase (SOD). It also reduced ethylene production and respiration rates. The results indicate that UV-C irradiation could be a useful non-chemical treatment to delay senscence and improve shelf life of Chinese kale.

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Item Type:	Article
AGROVOC Term:	Brassica oleracea
AGROVOC Term:	Chlorophylls
AGROVOC Term:	Antioxidants
AGROVOC Term:	Senescence
AGROVOC Term:	Brassica alboglabra
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:27
URI:	http://webagris.upm.edu.my/id/eprint/21775

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