Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Increased Antimutagenic and in vitro Anticancer Effects by Adding Green Tea Extract and Bamboo Salt during Doenjang Fermentation

녹차추출물 및 죽염처리에 의한 된장의 항돌연변이 및 in vitro 항암활성 증진효과

  • Hwang, Kyung-Mi (Hazard Substances Analysis Team, Gyeongin Regional Food and Drug Administration) ;
  • Oh, Sung-Hoon (Dept. of Food Science and Biotechnology, Ansan College of Technology) ;
  • Park, Kun-Young (Dept. of Food Science and Nutrition, Pusan National University)
  • 황경미 (경인지방식품의약품안전청 유해물질분석반) ;
  • 오성훈 (안산공과대학 식품생명과학과) ;
  • 박건영 (부산대학교 식품영양학과)
  • Published : 2007.01.31
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Abstract

Antimutagenic and in vitro anticancer effects of doenjangs added with green tea extract and/or using bamboo salt were studied by Ames test using Salmonella enterica serovar Typhimurium (Salmonella Typhimurium) TA100 and 3-(4,5-dimethylthiazol) -2,5-diphenyltetrazolium bromide (MTT) assay on PC-3 and DU145 human prostate cancer cells, respectively. At the 1.25 mg/plate concentration, 1% green tea extract (GTE) added doenjang exhibited 85% antimutagenicity against aflatoxin $B_1$ ($AFB_1$), while the control doenjang revealed 63% antimutagenicity, showing increased antimutagenic effect by the addition of green tea extract during doenjang fermentation. GTE added doenjang also increased antimutagenic effect against MNNG. The inhibition rate of the control doenjang showed 34% at 0.625 mg/plate, while 1% and 2% GTE added doenjangs inhibited by 56% and 73% at the 0.625 and 1.25 mg/plate, respectively (p<0.05). In MTT assay, GTE added doenjangs caused 70% $\sim$ 77% inhibition on the proliferation of PC-3 human prostate cancer cells at 0.5 mg/mL while the control doenjang exhibited 46% inhibition. However, 2% GTE added doenjang showed 91% inhibition at 1.0 mg/mL. The trend of the inhibition rate was similar in DU14S human prostate adenocarcinoma cells. When bamboo salt was used instead of natural sea salt, the antimutagenicity against MNNG and in vitro anticancer effect on the prostate cancer cells greatly increased. From these results, it can be concluded that green tea extract addition to doenjang and the use of bamboo salt during doengjang preparation increased the antimutagenic and in vitro anticancer activities of the doenjang and showed a synergistic effect.

된장제조 중 녹차추출물 첨가 및 죽염을 사용할 경우 돌연변이 억제작용 및 in vitro 항암 기능이 증진되는 것으로 나타났다. 돌연변이원 $AFB_1$에 대해 시료처리 농도 1.25 mg/plate에서는 녹차추출물을 첨가하지 않은 된장, 1% 및 2% 첨가 된장은 각각 63%, 85%, 87%의 항돌연변이 효과를 보여서 녹차 첨가에 의해 활성이 현저히 높아졌으나 녹차 1% 와 2%첨가에서 큰 차이는 보이지 않았다. MNNG에 대해서도 이러한 경향은 마찬가지였고, 녹차추출물 1% 첨가된장에 죽염을 사용했을 때는 더욱 높은 항돌연변이 효과를 나타냈다. 녹차추출물을 첨가한 된장의 in vitro 항암효과를 살펴 본 결과, PC-3인체 전립선암세포에서 0.5 mg/mL로 시료를 처리했을 때 대조군인 일반된장이 46%의 항암활성을 나타낸 데 비하여 녹차추출물을 1% 첨가한 시료는 70%, 2% 첨가한 시료는 77%의 암세포 생존저해효과를 나타내어 첨가 농도가 증가할수록 인체 전립선암세포의 생존을 더 크게 억제함을 알 수 있었다. 또한 죽염을 사용했을 때(녹차 1% 첨가군) 항암활성이 더욱 높아졌으며, 녹차 2% 첨가와 비슷하거나 더 높은 항암효과를 보였다. 다른 인체 전립선암세포인 DU145를 이용한 항암효과 실험에서도 같은 경향을 보여서 녹차추출물을 첨가하거나 죽염을 사용함으로써 된장의 항돌연변이 및 항암활성을 증진시킴을 알 수 있었다.

Keywords

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