UV – C irradiation treatment delays chlorophyll degradation and maintain qualities of Chinese kale (Brassica oleracea var. alboglabra)
Chairat Burana, Nutthachai Pongprasert and Varit Srilaong
Agricultural Science Journal, Vol. 38 No.5 (Suppl.) 2007. p 17-20.
2007
บทคัดย่อ
The effect of UV-C irradiation (1.8, 3.6, 5.4 and 7.2 kJ m-2) on chlorophyll degradation and quality changes of Chinese kale (Brassica oleracea var. alboglabra) at 20 °C was determined. The irradiation dose of 5.4 kJ m-2 maintained the highest total chlorophyll, chlorophyll a and chlorophyll b contents, and delayed decreasing of hue angle compared with other treatments. Furthermore, weight loss, respiration rate and ethylene production were also reduced by 5.4 kJ m-2 UV-C treatment concomitantly with the maintenance of vitamin C during storage. The results suggest that UV-C irradiation treatment could be a useful non-chemical method to delay chlorophyll degradation and maintain the quality in Chinese kale.