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http://dx.doi.org/10.3746/jkfn.2017.46.10.1225

Microbial Safety and Quality of Fresh Carrot Juice Prepared with Different Environmentally-Friendly Washing Methods  

Lim, Sang-Wook (Bio-Food Research Center, Hurom Co., Ltd.)
Choe, Da-Jeong (Bio-Food Research Center, Hurom Co., Ltd.)
Kang, Min-Jung (Bio-Food Research Center, Hurom Co., Ltd.)
Kim, Jong-Hyun (Bio-Food Research Center, Hurom Co., Ltd.)
Kim, Myo-Jeong (Department of Food and Life Science, Inje University)
Kim, Min-Ju (Bio-Food Research Center, Hurom Co., Ltd.)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.46, no.10, 2017 , pp. 1225-1233 More about this Journal
Abstract
The aim of this study was to evaluate the microbial inhibitory activity and physicochemical quality of fresh carrot juice prepared with different environmentally-friendly washing methods during low temperature storage. Individual and combined treatments with sodium bicarbonate (baking soda, $NaHCO_3$) and citric acid were applied to carrots for 10 min. Tap water and 50 ppm of sodium hypochlorite (NaOCl) were used as the control. Combined treatment of 1% $NaHCO_3$ and 1% citric acid significantly reduced total aerobic counts and coliforms. In addition, combined treatment of 1% $NaHCO_3$ and 1% citric acid inhibited microbial growth for 7 days at $4^{\circ}C$ and $10^{\circ}C$ in a shelf-life study. There were no significant differences among the sanitizers in terms of $^{\circ}Brix$, acidity, pH, and color. Changes in physicochemical quality were not significantly different by sanitizer but were affected by storage temperature. These results indicate that washing with combined treatment of 1% $NaHCO_3$ and 1% citric acid is an effective method to inhibit the microbial population and maintain physicochemical quality. Therefore, combined treatment of 1% $NaHCO_3$ and 1% citric acid can be effectively used to sanitize and prepare carrot juice without affecting other properties.
Keywords
environmentally-friendly sanitizer; sodium bicarbonate (baking soda); citric acid; combined treatment; microbial safety;
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Times Cited By KSCI : 11  (Citation Analysis)
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