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논문 기본 정보

자료유형
학술저널
저자정보
Oh, Hyemin (Department of Food and Nutrition, Sookmyung Women's University) Kim, Sejeong (Risk Analysis Research Center, Sookmyung Women's University) Lee, Soomin (Risk Analysis Research Center, Sookmyung Women's University) Ha, Jimyeong (Department of Food and Nutrition, Sookmyung Women's University) Lee, Jeeyeon (Department of Food and Nutrition, Sookmyung Women's University) Choi, Yukyung (Department of Food and Nutrition, Sookmyung Women's University) Lee, Yewon (Department of Food and Nutrition, Sookmyung Women's University) Kim, Yujin (Department of Food and Nutrition, Sookmyung Women's University) Seo, Yeongeun (Department of Food and Nutrition, Sookmyung Women's University) Yoon, Yohan (Department of Food and Nutrition, Sookmyung Women's University)
저널정보
한국축산식품학회 한국축산식품학회지 한국축산식품학회지 제38권 제6호
발행연도
2018.1
수록면
1,189 - 1,195 (7page)

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This study developed an antimicrobial hydrogel to control Listeria monocytogenes in Yukhoe (Korean beef tartare). Four hydrogels (hydrogel 1: 5% alginate+1% chitosan+0.2% $CaCl_2$, hydrogel 2: 1% ${\kappa}$-carrageenan+1% chitosan, hydrogel 3: 2% ${\kappa}$-carrageenan+1% $CaCl_2$, and hydrogel 4: 2% ${\kappa}$-carrageenan+3% $CaCl_2$) were prepared. The hydrogels then absorbed 0.1% grapefruit seed extract (GSE) and 0.1% citrus extract (CE) for 30, 60, 120, and 240 min to be antimicrobial hydrogels. To select the most effective antimicrobial hydrogel, their swelling ratio (SR) and antilisterial activities were determined. The selected hydrogel ($2{\times}2cm$) was then placed on surface of beef (round; $3{\times}3cm$), where L. monocytogenes (ca. $10^6CFU/g$) were inoculated, and the cell counts were enumerated on PALCAM agar. Among the hydrogels, the SR of hydrogel 1 increased with absorbing time, but other hydrogels showed no significant changes. Antimicrobial hydrogel 1 showed higher (p<0.05) antilisterial activity than other antimicrobial hydrogels, especially for the one absorbed the antimicrobial for 120 min. Thus, the antimicrobial hydrogel 1 absorbed antimicrobials for 120 min was applied on raw beef at $4^{\circ}C$, and reduced (p<0.05) more than 90% of L. monocytogenes on raw beef. These results indicate that antimicrobial hydrogel 1 formulated with 0.1% GSE or 0.1% CE is appropriate to improve the safety of Yukhoe by reducing psychrotrophic L. monocytogenes cell counts on raw beef.

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