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http://dx.doi.org/10.11002/kjfp.2013.20.4.459

Sterilization effect of electrolyzed water and chlorine dioxide on Rubus coreanus Miquel  

Teng, Hui (School of Food Science and Biotechnology, Kyungpook National University)
Kim, You Ho (Post-Harvest Engineering Division, National Academy of Agricultural Science, Rural Development Administrations)
Lee, Won Young (School of Food Science and Biotechnology, Kyungpook National University)
Publication Information
Food Science and Preservation / v.20, no.4, 2013 , pp. 459-466 More about this Journal
Abstract
This study was carried out in order to investigate sterilization effect and to extend storage periods of the Rubus coreanus by treating with tap water (TW), electrolyzed water (EW) and aqueous chlorine dioxide ($ClO_2$). After each treatment plot was soaked with 10, 50, 100, 200 ppm in each sterilizing solution within 30 sec, each treatment was compared during the storage time at room temperature and refrigerator temperature. As results of total plate count according to temperatures and periods, the microbial sterilizing power of each treatment plot was bigger at EW and $ClO_2$ treatment plots than the TW treatment plot; however, it sharply increased on the high concentration $ClO_2$ treatment plot. Futhermore, the cold storage treatment plot had more outstanding microbial sterilizing power than the room temperature treatment plot. As a result of observing the surface of the Rubus coreanus using scanning electron microscope (SEM), no microbe was seen in EW and $ClO_2$ treatment plot. The results of measuring enzyme activity showed a more significant decrease in EW and $ClO_2$ solutions treatment plot than TW treatment plot but gradually increased with time. The contents of total polyphenol revealed similar values on each treatment. The EW and $ClO_2$ treatment of the Rubus coreanus could be considered as good methods for inhibiting microbial growth in fresh vegetables and fruit, thereby contributing to quality maintenance.
Keywords
Rubus coreanus Miquel; electrolyzed water; chlorine dioxide; sterilization effect;
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Times Cited By KSCI : 8  (Citation Analysis)
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