Effects of Ethanol Extracts of Bacillus polyfermenticus SCD on Tteokgalbi Quality during Storage

Bacillus polyfermenticus SCD 에탄올 추출물이 떡갈비의 품질 및 저장성에 미치는 영향

  • Kim, Hack-Youn (Department of Food Science and Biotechnology of Animal Resources, Konkuk University) ;
  • Jeong, Jong-Youn (Department of Food Science and Biotechnology of Animal Resources, Konkuk University) ;
  • Choi, Ji-Hun (Department of Food Science and Biotechnology of Animal Resources, Konkuk University) ;
  • Lee, Mi-Ai (Department of Food Science and Biotechnology of Animal Resources, Konkuk University) ;
  • Lee, Jang-Hyun (Department of Food Science and Biotechnology of Animal Resources, Konkuk University) ;
  • Chang, Kyung-Hoon (Department of Food Science and Biotechnology of Animal Resources, Konkuk University) ;
  • Choi, Shin-Yang (Korea Food Research Institute) ;
  • Paik, Hyun-Dong (Department of Food Science and Biotechnology of Animal Resources, Konkuk University) ;
  • Kim, Cheon-Jei (Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
  • Published : 2006.12.31

Abstract

The treatments of Tteokgalbi studied were: control (no antioxidants); (T1) ethanol extracts of Bacillus polyfermenticus SCD (5%); (T2) ascorbic acid (0.06%); (T3) ascorbic acid (0.03%) + ethanol extracts of B. polyfermenticus SCD (2.5%). The pH of T1, T2, and T3 samples was significantly (p<0.05) lower than that of the control for up to 3 days of storage. Thereafter T1, T2 and T3 had a significantly higher (p<0.05) pH value than the control during storage. TBA values were significantly lower (p<0.05) in all treated samples relative to the control. The TBA value of the control rapidly increased after 6 days of storage, whereas the TBA values of the test samples did not sharply increase. T3 samples treated with vitamin C and Bacillus polyfermenticus SCD had a higher TBA value than T1 and T2 samples. The VBN values of T1, T2 and T3 sampleswere lower than that of the control (p>0.05). VBN values of the ground pork meat samples significantly increased (p<0.05) with storage time. The total microbial counts of each sample significantly increased with storage time (p<0.05). The $a^*$ values of T1 and T3 samples containing added vitamin C were significantly higher (p<0.05) than that of the control and T2 samples during storage. The $b^*$ value of T2 samples was significantly higher (p<0.05) than that of other ground pork meat products during storage.

본 연구에서 대조구는 항산화제를 첨가하지 않았고, ascorbic acid(0.06%)를 첨가한 처리구(T1), B. polyfermenticus SCD 에탄을 추출물(5%)을 첨가한 처리구(T2)와 ascorbic acid(0.03%) 및 B. polyfermenticus SCD 에탄을 추출물(2.5%)를 첨가한 처리구(T3)로 구분하여 실험을 실시하였다. 비타민 C 혹은 B. polyfermenticus SCD의 ethanol 추출액을 첨가한 떡갈비는 저장성이 향상되었다. 특히 지질산패도의 경우 처리구들은 대조구에 비하여 현저히 낮은 값을 보였을 뿐만 아니라, B. polyfermenticus SCD의 에탄을 추출물을 첨가한 처리구가 가장 낮은 값을 나타냈다. 휘발성 염기태질소값은 항산화제를 넣은 모든 처리구에서 낮은 결과를 보였다. 따라서, 기존에 많은 연구를 통해 항산화제로 많이 쓰여지고 있는 비타민 C와 더불어 B. polyfermenticus SCD의 에탄올 추출물이 뛰어난 천연항산화 능력을 보였다

Keywords

References

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