Development of Washing System for Improving Microbiological Quality of Blueberry after Postharvest
2013
Chun, H.H., Rural Development Administration, Gyeonggi, Republic of Korea | Park, S.H., Rural Development Administration, Gyeonggi, Republic of Korea | Choi, S.R., Rural Development Administration, Gyeonggi, Republic of Korea | Song, K.B., Chungnam National University, Daejeon, Republic of Korea | Park, S.J., Chungnam National University, Daejeon, Republic of Korea | Lee, S.H., Rural Development Administration, Gyeonggi, Republic of Korea
To inactivate the microorganisms on the surface of blueberries after harvest and to secure microbial safety, a bubble-aqueous chlorine dioxide washing system was developed. After treating the freshly prepared blueberries with the bubble-aqueous chlorine dioxide washing system, the changes in the microbial populations and quality of the blueberries were determined during storage 4±1°C. Microbiological data indicated that the populations of total aerobic bacteria, yeast and mold decreased by 1.4 and 1.3 log CFU/g at the treatment of 20 ppm aqueous chlorine dioxide with the system, respectively. There was no significant difference in color change and weight loss during storage among treatments. In addition, this washing system could handle approximately 60 kg of blueberry per hour, resulting in labor-saving. Therefore, these results clearly suggest that the bubble-aqueous chlorine dioxide washing system could be useful in improving the microbiological safety of fresh blueberries after harvest.
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