Korean journal of food and cookery science (한국식품조리과학회지)

Korean Society of Food and Cookery Science (한국식품조리과학회)
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Fermentation of Red Ginseng using CKDHC 0801 and CKDHC 0802

CKDHC 0801과 CKDHC 0802 균주를 이용한 홍삼발효

  • Received : 2010.07.16
  • Accepted : 2010.08.13
  • Published : 2010.08.31
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Abstract

In this study, we isolated two species of bacteria for the powerful biotrasnformation of ginsenosides from Kimchi and human feces. Using biochemical tests and 16s rRNA sequencing, the selected strains were identified as Latobacillusplantarum (CKDHC0801) and Lactobacillussakei (CKDHC0802). Changes in cell growth and pH were examined in red ginseng. CKDHC 0801 and CKDHC 0802 reached their maximum growth phase after 24 hr and 48 hr, respectively, whereas the combined culture of CKDHC 0801 and CKDHC 0802 showed higher cell growth than bacterial strain alone. During fermentation of CKDHC 0801 and the combined culture, the pH values decreased from 5.2 to 4.2 after 24 hr, but CKDHC 0802 reached pH of 4.2 after 3day. The identities of ginsenosides were biotransferred from high molecular (Rg1 and Rb2) to low molecular (Rg3, Rg5, Rk1, PPD) by fermentation of both bacteria. Therefore, the results of this study demonstrate that CKDHC 0801 and CKDHC 0802 could be used to enhance to effects of red ginseng.

김치와 사람의 분변에서 ginsenoside 전환이 높은 균주 2종을 분리하였다. 분리된 균주는 형태학적, 생화학적 특성 조사와 16S rRNA 염기서열 결정을 통한 균주 동정 결과 Lactobacillus plantarum과 Lactobacillus sakei로 밝혀졌고 이를 각각 CKDHC 0801 및 CKDHC 0802로 명명하였다. 두 균주의 홍삼배지에서의 생육도를 관찰한 결과 CKDHC 0801은 24시간에 CKDHC 0802는 48시간에 최고 성장도를 보였다. 특히 두 균주를 혼합하여 홍삼배지에 배양시 더욱 높은 성장률을 나타냄으로써 홍삼을 발효하기에 적합한 균주임을 확인하였다. 당 이용율을 살펴본 결과 CKDHC 0801이 더 높게 나타났다. pH변화 측정결과 CKDHC 0801과 두 개의 균주를 혼합 배양한 경우에는 배양 후 24시간에서 48시간사이에 5.2에서 4.2로 낮아졌으나, CKDHC 0802는 배양 후 3일후에야 pH 4.2 수준으로 낮아졌다. 이 균주들을 이용한 홍삼발효는 ginsenoside의 조성이 고분자인 Rg1, Rb1 등에서 저분자인 Rg3, Rg5+Rk1 등으로 전환되어지는 것을 확인하였다. 이를 통해서 이 두 가지의 균주를 이용한 발효홍삼은 홍삼의 효능을 증진시킬 수 있는 좋은 사용예가 될 것으로 사료된다.

Keywords

References

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