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This study was conducted to maintain the postharvest shelf-life of summer strawberry cultivars ‘Goha’ and ‘Flamengo’ through CO2 (90%) and ClO2 gas (5μL・L -1 ) pre-treatment. The respiration rate of ‘Goha’ and ‘Flamengo’ treated with CO2 and CO2 + ClO2 was the lowest during storage. The weight loss with CO2 + ClO2 treatment was about 1% lower than the control group and ‘Goha’ was the lowest during storage. The pre-treatments effect on soluble solids contents was minimized. The firmness with CO2 and CO2 + ClO2 treatments was only about 30% higher than ClO2 and control. The firmness of ‘Goha’ was about 2.15N and ‘Flamengo’ was 2.37N, 15 days after storage. Decayed fruit was shown from after 6 days after storage in control. Control group lost quality 10 days after storage due to decayed fruit rate 20% of ‘Goha’ and ‘Flamengo’. CO2 and CO2 + ClO2 treatments showed the lowest decay rate during storage. Especially, ‘Goha’ showed around 5% decay fruit rate 10 days after storage. As a result, CO2 + ClO2 pre-treatment is recommended to extend the shelf-life of the summer strawberries. Additional key words: decay rate, firmness, quality *Corresponding author: jeongcs@kangwon.ac.kr ※ Received 10 April 2015; Revised 9 June 2015; Accepted 12 June 2015.    (: PJ010507)    , 2013    (-C1009748-01-01). C 2015 Korean Society for Horticultural Science            ‘Flamengo’   ‘Goha’   ,  500m     .          ,              (Eum et al., 2014).           ,     .       Botrytis cinerea     ,                ,       (Marquenie et al., 2003; Vicente et al., 2002).            (Eum and Lee, 2007; Wills and Kim, 1995).          (Salunkhe and Desai, 1984),       CO2  (El-Kazzaz et al., 1983; Ke et al., 1991),    UV-C (Marquenie et al., 2003), ClO2 (Jin et al., 2007)  .         Kor. J. Hort. Sci. Technol. 33(5), October 2015 706

Effect of CO2 and ClO2 gas Pre-treatment for Maintain Shelf-life of Summer Strawberries