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NaCl을 첨가한 데침 열처리 취나물의 미생물 보존성

Microbial Analysis of Aster scaber Blanched with NaCl for Storage

  • 김봉주 (가천대학교 식품생물공학과) ;
  • 이영덕 (서원대학교 식품공학과) ;
  • 박종현 (가천대학교 식품생물공학과)
  • Kim, Bong-Joo (Dept. of Food Science and Biotechnology, Gachon University) ;
  • Lee, Young-Duck (Dept. of Food Science and Engineering, School of Convergence Bioscience and Technology, Seowon University) ;
  • Park, Jong-Hyun (Dept. of Food Science and Biotechnology, Gachon University)
  • 투고 : 2014.03.24
  • 심사 : 2014.08.05
  • 발행 : 2014.08.30

초록

취나물의 보존과 유통 시에 미생물 품질을 높이기 위하여 hurdle technology를 이용한 데침, 위생처리제와 감압포장 처리에 따른 분석을 하였다. 데침 열처리 후 위생처리제로는 20% 에탄올과 10% NaCl에서 6일 후에 총 세균수가 2 log CFU/g으로 효과적으로 제어되었다. 데침 시의 물온도는 $100^{\circ}C$ 온도가 균의 제어에 더 유리하였으며, 보관온도는 $4^{\circ}C$ 온도가 균 증식을 적게 하였다. 2회 반복적인 데침과 NaCl 첨가 $80^{\circ}C$ 데침 물온도의 처리에서도 현저한 증식 억제 효과를 확인하였다. 데침 시에 접촉되었던 물이 없는 감압포장 상태에서의 데침도 10일간 2 log CFU/g 총세균수를 보여 주어 세균 억제에 효과적임을 알았다. 그리므로 $80{\sim}100^{\circ}C$에서 10% NaCl 물로 2회 반복 데침이 취나물의 미생물적인 품질을 높여 주었고, 물 접촉이 없는 반복 데침도 취나물의 보관 유통에 도움이 됨을 알 수가 있었다.

To improve microbiological quality of Aster scaber during storage and distribution, hurdle technology with the sanitizers and packaging methods was used. After blanching, total aerobic bacteria of Aster scaber treated with 20% ethanol and 10% NaCl were measured at 2 log CFU/g after 6 days. Total aerobic bacteria of blanched Aster scaber at $100^{\circ}C$ were measured at 2 log CFU/g, and the storage at $4^{\circ}C$ effectively inhibited the growth of bacteria. Repeated blanching using water with added NaCl at $80^{\circ}C$ showed similar microbial growth inhibition compared with treatment at $100^{\circ}C$. After vacuum packaging, blanched sample showed 2 log CFU/g of total aerobic bacteria during 10 days (the storage at $4^{\circ}C$). Therefore, repeated blanching using the water with added 10% NaCl improved the microbiological quality of Aster scaber. We also found that repeated blanching after vacuum packaging was an effective way for storage and distribution of Aster scaber. In conclusion, blanching two times in the 10% salt water or in vacuum packaging at $80{\sim}100^{\circ}C$ would be helpful to control the microbes during storage and distribution.

키워드

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피인용 문헌

  1. Antioxidative Activities and Quality Characteristics of the Aster scaber Bibimbap for Home Meal Replacement with Varied Blanching Pre-treatment vol.29, pp.5, 2014, https://doi.org/10.7318/KJFC/2014.29.5.444
  2. 블랜칭 처리에 의한 신선편이 둥근마의 저장 중 품질 특성 vol.24, pp.5, 2017, https://doi.org/10.11002/kjfp.2017.24.5.565