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http://dx.doi.org/10.9799/ksfan.2012.25.3.691

Influences of Freezing and Thawing Temperature on the Quality Characteristics of Mashed Red Pepper  

Hwang, In-Guk (Dept. of Agro-food Resources, National Academy of Agricultural Science, Rural Development Administration)
Jeong, Heon-Sang (Dept. of Food Science and Technology, Chungbuk National University)
Lee, Jun-soo (Dept. of Food Science and Technology, Chungbuk National University)
Kim, Hae-Young (Dept. of Food Science and Nutrition, Yongin University)
Yoo, Seon-Mi (Dept. of Agro-food Resources, National Academy of Agricultural Science, Rural Development Administration)
Publication Information
The Korean Journal of Food And Nutrition / v.25, no.3, 2012 , pp. 691-696 More about this Journal
Abstract
We conducted this study to investigate the quality characteristics of mashed red pepper(MRP) with different freezing(-20, -30, -40, -50, -60 or $-70^{\circ}C$) and thawing(4, 10, 20, 30, 40 or $50^{\circ}C$) temperature. Frozen and thawed MRP was evaluated for ascorbic acid contents(AsA), capsaicinoids contents, free sugar contents, ASTA value, and flavor patterns. The AsA of frozen MRP with freezing temperature showed a range of 67.08~80.35 mg/100 g FW, and the mean AsA losses after frozen were 57~64% compared to raw red pepper. Capsaicinoids contents, free sugar contents, and ASTA values of frozen MRP with freezing temperature were no significant difference compared to raw red pepper. The AsA of thawed MRP with thawing temperature showed a range of 70.34~81.59 mg/100 g FW, and the mean AsA losses after thawed were 45.12~52.69% compared to raw red pepper. Capsaicinoids contents and free sugar contents of thawed MRP with thawing temperature were no significant difference compared to raw red pepper, whereas the ASTA value decreased according to the increasing of thawing temperature. Flavor patterns of thawed MRP after $20{\sim}50^{\circ}C$ thawing were clearly different from the raw red pepper. Overall, it is recommended that the best freezing and thawing temperature for preserving the quality of MRP is freezing at $-20^{\circ}C$ and thawing at $10^{\circ}C$.
Keywords
mashed red pepper; freezing; thawing; quality characteristics;
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Times Cited By KSCI : 19  (Citation Analysis)
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