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http://dx.doi.org/10.3746/jkfn.2009.38.1.089

Quality Changes of Jujube Wine by Hydrostatic Pressure and Freezing Treatment during Storage  

Park, Hee-Joeng (High-Tech Agriculture Division, Rural Development Administration)
Kim, Kwang-Yup (Dept. of Food Science and Technology, Chungbuk National University)
Jeong, Heon-Sang (Dept. of Food Science and Technology, Chungbuk National University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.38, no.1, 2009 , pp. 89-97 More about this Journal
Abstract
Jujube wine was treated with hydrostatic pressure (500 MPa, 5 min) or freezing ($-20^{\circ}C$, 3 days and thawed $20^{\circ}C$, 4 hr) and their microbial counts, physicochemical properties, and sensory characteristics were investigated during storage at $35^{\circ}C$ for 60 days. Microorganisms in pressure-treated jujube wine were not detected during the whole period and chemical compositions as well as color were slightly changed. Sensory quality was significantly preserved until 20 days without increasing sweet aroma and taste. In freezing-treated wine, bacterial counts were decreased after 10 days and remained below 10 CFU/mL while lactic acid bacteria and yeast were not detected. Changes of chemical composition were smaller than those of the untreated wine but bigger than those of the pressure-treated or heat-treated wine. Instrumental color was changed after $10{\sim}20$ days resulting from the increase of L value and the reduction of a value. Sensory quality was significantly similar with the fresh wine for 10 days, suggesting that pressure treatment would be the most effective sterilization method to improve the shelf life of jujube wine whereas freezing treatment would be insufficient.
Keywords
jujube wine; hydrostatic pressure; freezing; quality; storage;
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Times Cited By SCOPUS : 0
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