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Shelf-Life Extension of Sing Sing Hoe (Fresh Sliced Raw Fish) by Frozen Storage  

Park, Jin-Il (Food and Safety Research Center, National Fisheries Research & Development Institute)
Yoon, So-Mi (Food and Safety Research Center, National Fisheries Research & Development Institute)
Yoon, Ho-Dong (Food and Safety Research Center, National Fisheries Research & Development Institute)
Park, Hee-Yeon (Food and Safety Research Center, National Fisheries Research & Development Institute)
Byun, Han-Seok (Food and Safety Research Center, National Fisheries Research & Development Institute)
Jang, Mi-Soon (Food and Safety Research Center, National Fisheries Research & Development Institute)
Publication Information
Food Science and Preservation / v.16, no.6, 2009 , pp. 824-829 More about this Journal
Abstract
Changes in pH, viable microbial count, chemical freshness, texture, and sensory qualities of Sing Sing Hoe (SSH, fresh-sliced raw fish) were measured over 15 days at $4^{\circ}C$, $-20^{\circ}C$, and $-80^{\circ}C$. The initial pH of SSH was 6.25 at all three storage temperatures, and pH increased slightly after 12 days to pH 6.48 and pH 6.55 at $-20^{\circ}C$ and $-80^{\circ}C$, respectively. The range in viable cell count was 104-106 CFU/g, regardless of storage temperature. The initial content of volatile basic nitrogen (VBN) was 5.8 mg/100 g and became 8.2 mg/100 g or less, and 7.9 mg/100 g or less after 15 days at $-20^{\circ}C$ and $-80^{\circ}C$, respectively. However, pH and VBN values increased significantly after 3 days of storage at $4^{\circ}C$. At this temperature, the K-value was 22.3% after 6 days and 40% or more after 15 days. At $-20^{\circ}C$, the K-value was 9.6% or less after 6 days and 21% or less after 15 days of storage. At $-80^{\circ}C$, the K-value was 8.5% or less after 9 days and 20% or less after 15 days of storage. Compared with the K-value of live fish muscle (10%), freshness similar to that of live fish was maintained for 6 days under both $-20^{\circ}C$ and $-80^{\circ}C$ storage conditions. There was no significant change in texture during storage of SSH at $-20^{\circ}C$ or $-80^{\circ}C$, but SSH stored at $4^{\circ}C$ showed a decrease in texture quality during storage. Sensory scores were high for material stored for up to 3 days at $4^{\circ}C$ and 6 days at $-20^{\circ}C$ or $-80^{\circ}C$. The overall freshness of SSH was maintained for up to 6 days, in comparison with fresh-sliced raw fish, under both frozen storage conditions.
Keywords
sing sing hoe; VBN; K-value; fish; texture;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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