Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Antimicrobial Activity and Oxidative Stability of Bamboo Smoke Distillate on Soybean Oil during Storage

죽초액의 항균활성 및 대두유에 대한 산패 억제 효과

  • Lee, Fan-Zhu (Department of Food Science and Engineering, Yanbian University) ;
  • Lee, Byung-Doo (Department of Food Science and Technology and Institute Agricultural Science and Technology, Chonnam National University) ;
  • Eun, Jong-Bang (Department of Food Science and Technology and Institute Agricultural Science and Technology, Chonnam National University)
  • 이범수 (연변대학교 농학원 식품공학계) ;
  • 이병두 (전남대학교 식품공학과 농업과학기술연구소) ;
  • 은종방 (전남대학교 식품공학과 농업과학기술연구소)
  • Published : 2006.12.31
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Abstract

The antimicrobial and antioxidative effect of mechanical bamboo smoke distillate (MBSD) and traditional bamboo smoke distillate (TBSD) were investigated. Antimicrobial activity was demonstrated against all the microorganisms used in this experiment and was the higher in TBSD than in MBSD, with an activity concentration in the range 10-50 ${\mu}m/8$ mm paper disc. At the same concentration the antimicrobial activities of TBSD and MBSD was Gram positive bacteria>gram negative bacteria>Lactotobacillus>yeast. The minimum inhibition concentration (MIC) of BSC was 1.0-7.3${\mu}L/mL$, and the maximum lethal concentration (MLC) was 26.7-116.7 ${\mu}L/mL$. The soybean oil oxidative stability increased with increasing BSD concentration. The induction periods of oil oxidation were 3.75, 4.57 and 12.06 days for the samples with BSD added at 0.1%, 0.5%, and 1.0%, respectively. The RAE in soybean oil with 0.5% BSD was evaluated to be 168.45%, being similar to that of the sample with 0.02% BHT.

신선한 왕대(Phyllostachys bambuoides sieb. et zucc.)를 이용하여 기계식 죽초액과 재래식 죽초액을 제조하고 이들의 농도에 따른 항균활성을 조사하였으며 정체 기계식 죽초액이 대두유 저장 과정 중 산패억제 효과를 조사하였다. 각각의 죽초액은 10-50 ${\mu}L/8$ mm paper disc 농도범위에서 공시 모든 공시균주에 대하여 활성을 나타내었으며 재래식 죽초액의 편이 기계식 죽초액에 비하여 항균활성이 더 크게 나타났다. 동일한 조건하에서 죽초액의 항균활성은 그람양성균 > 그람음성균 > 젖산균 > 효모의 순이었다. 그리고 모든 공시균주에 대하여 3.0%의 acetic acid 50 ${\mu}L/8$ mm paper disc에 상당한 죽초액의 항균활성 농도는 10-50 ${\mu}L/8$ mm paper disc 범위이며, 각각의 균주에 대한 활성농도는 서로 차이를 나타내었다. MIC는 대체로 1.0-7.3 ${\mu}L/mL$ 범위였으며 최대치사농도(MLC)는 26.7-116.7 ${\mu}L/mL$ 범위였다. 대두유 저장기간 동안 죽초액 첨가 농도 0.1-1.0% 범위에서 농도가 증가할수록 산패억제 효과도 컸으며, 죽초액 0.1% 첨가하였을 때 효과가 BHT 0.02% 첨가하였을 때와 유사하였으며 ${\alpha}-tocopherol$ 0.02% 첨가한 것보다 높은 산화억제 효과를 보였다. 죽초액 0.1, 0.5 및 1.0% 첨가 대두유의 유도기간은 각각 3.75, 4.57 및 12.06일 이었으며, 무첨가구의 2.86일에 비하여 모두 길었고, 상대적 항산화 효과는 각각 130.85, 159.60 및 421.30%로 죽초액 0.5%를 첨가할 때가 BHT 0.02% 첨가하였을 때의 168.45%와 비슷하게 나타났다. 죽초액은 일부 식중독균 및 식품부패균에 대한 억제효과와 유지 산패억제 효과가 인정되므로 이를 이용한 식품첨가제의 개발이 기대된다.

Keywords

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