• 제목/요약/키워드: Bacillus subtilis (chungkookjang)

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1-Deoxynojirimycin 생산 균주 Bucillus subtilis MORI 3K-85의 단백질 분석 (Protein Analysis of Bacillus subtilis MORI 3K-85 with Reference to the Biosynthesis of 1-Deoxynojirimycin)

  • 조용석;강경돈;박영식;이재연;김현수;육원정;;황교열;성수일
    • KSBB Journal
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    • 제26권6호
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    • pp.517-522
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    • 2011
  • In our previous study, we isolated and characterized a 1-deoxynojirimycin (DNJ)-producing bacterium, Bacillus subtilis MORI, from chungkookjang, a Korean traditional food. B. subtilis MORI was subjected to ${\gamma}$-irradiation and the resulting bacteria were screened for increased DNJ production. A mutant was identified that produced 7.6 times more DNJ and named B. subtilis MORI 3K-85. In this study, the protein profiles of both strains were compared by one-dimensional and two-dimensional gel electrophoresis (1-DE and 2-DE, respectively) under both native and denaturing conditions. The 1-DE native-PAGE and 1-DE SDS-PAGE analyses identified 5 and 7 bands, respectively, that were found at higher concentrations in B. subtilis MORI 3K-85 than in B. subtilis MORI. Similarly, 2-DE analyses identified 20 protein spots which were found at higher concentrations in B. subtilis MORI 3K-85. The peptide mass profiles of these 20 proteins were analyzed by MALDI-TOF and compared with peptide sequences of B. subtilis and B. amyloliquefaciens in the MASCOT database. This screening suggested that three dehydrogenases, an aldolase, a synthetase, an isomerase, a reductase, and a peroxidase are elevated in B. subtilis MORI 3K-85. Based on this data, one or more of the elevated 8 enzymes might be related to the DNJ biosynthetic pathway.

청국장에서 분리한 혈전용해효소 생산세균의 분리 및 동정 (Isolation and Charaterization of the Fibrinolytic Enzyme Producing Bacterium isolated from Naturally Fermented Chungkookjang)

  • 손병희;오계헌
    • 한국산학기술학회논문지
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    • 제7권3호
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    • pp.476-482
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    • 2006
  • 본 연구의 목적은 상업적으로 사용하기 위하여 혈전용해효소를 생성하는 세균인 MK-15를 분리하고 동정하는 것이다. 먼저 세균 MK-15는 자연 발효된 콩으로부터 농화분리하였으며, 이 세균에 대한 형태학적 및 다양한 생리학적 특성 조사를 실시하였다. MK-15의 배양 상등액으로부터 혈전용해효소 활성을 fibrin plate 방법으로 solid fibrinolytic activity를 측정하였다. 그 결과, 콩배지에서 자란 MK-15의 혈전용해활성은 대조군으로 사용된 plasmin의 혈전용해활성에 비하여 약 2.5배 높았다. 16S rRNA를 분석한 결과 균주 MK-15는 Bacillus subtilis 군과 99.9% 유사성을 나타내었다. 따라서, 이 세균은 Bacillus sp. MK-15로 명명하였으며. 균주 MK-15는 GenBank에 [DQ163021]로 등록하였다.

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$CaCO_3$가 Bacillus subtilis에 의한 청국장메주 발효에 미치는 영향 (Effect of $CaCO_3$ on the Chonggukchang Meju Fermentation by B. subtilis)

  • 이강무;이시경;주현규
    • Applied Biological Chemistry
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    • 제37권6호
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    • pp.421-426
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    • 1994
  • $CaCO_3$가 청국장 메주 발효에 미치는 영향을 구명하고자 $CaCO_3$ 0, 0.01, 0.1, 1%씩 되게 각각 첨가한 청국장 메주에 B. subtilis를 접종하여 청국장 메주 발효 중의 성분 및 단백질 분해 효소력과 아미노산, 비타민 B복합체의 함량을 조사하였다. 발효중 $CaCO_3$첨가구의 품온은 대조구보다 높았으며, 적정산도는 $CaCO_3$첨가구에서 첨가 농도가 높아짐에 따라 대조구보다 감소하였고, 단백질 분해효소력 및 아미노태 질소함량은 0%<0.01%<0.1%<1%의 $CaCO_3$ 첨가 순으로 $CaCO_3$첨가구가 높았다. 아미노산 함량은 시험구 모두 증가하였으나, $CaCO_3$첨가구와 대조구간의 큰 차이는 없었다. 그러나 vitamin B복합체의 함량은 $CaCO_3$첨가구가 대조구보다 증가하였으며, 그중 0.01% 첨가구가 가장 높았다.

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균주(菌株)를 달리한 청국장의 제조(製造)에 관(關)한 연구(硏究) 제1보(第1報)-청국장메주 발효과정중(醱酵過程中)의 성분(成分)과 효소력(酵素力)- (Effect of Bacillus Strains on the Chungkook-jang Processing (1) Changes of the Components and Enzyme Activities During Chungkookjang-koji Preparation)

  • 이현자;서정숙
    • Journal of Nutrition and Health
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    • 제14권2호
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    • pp.97-104
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    • 1981
  • Bacillus natto 및 Bacillus subtilis균(菌)을 이용(利用)한 청국장메주 제조(製造)와 재래식방법(在來式方法)에 의(依)한 청국장메주 발효과정중(醱酵過程中)의 성분(成分)과 효소력(酵素力)을 비교검토(比較檢討)한 결과(結果)는 다음과 같다. 1) 발효초기(醱酵初期)의 품온(品溫)이 $50{\sim}55^{\circ}C$였으나 12시간후(時間後)에 B. natto와 B. subtilis구(區)는 $48{\sim}52^{\circ}C$였고 재래식구(在來式區)는 $40^{\circ}C$였다. 72시간경(時間頃)에는 $41{\sim}48^{\circ}C$로 시험구(試驗區)에 따라서 품온(品溫)의 저하(低下)가 심하였다. 2) ethyl alcohol과 환원당(還元糖)은 12시간경(時間頃)에 최대치(最大値)을 나타핀후에 감소(減少)하는 경향이었으며 시험구간(試驗區間)외 차이(差異)는 거이 없었다. 3) pH는 시험구(試驗區) 모두 발효(醱酵) 12시간(時間)까지는 6.0이던 것이 72시간경(時間頃)에는 8.2이상(以上)으로 나타났고 적정산도(滴定酸度)는 발효초기(醱酵初期)에 최대치(最大値)를 나타였다. 4) 아미노실소(室素)와 수용성실소함량(水溶性室素含量)은 결시적(經時的)으로 증가(增加)하는 경향(傾向)으로서 B. natto구(區), 재래식구(在來式區), B. subtilis구(區)의 순(順)으로 높았다. 5) Amylase와 protease의 활성(活性)은 경시적(經時的)으로 불규칙적(不規則的)인 변화(變化)를 보였고 시험구간(試驗區間)의 차이(差異)가 없었으나 효소활성(酵素活性)은 대체(大體)로 미약(微弱)하였다. 본(本) 실험(實驗)에저 B.natto구(區)가 청국장매주 제조(製造) 균주(菌株)로서 성분(成分)과 관능면(官能面)에서 우수(優秀)하였다.0일이었다.환경적응성이 낮은 경향이었다.은 모두 경운 유 ㆍ무에 관계없이 시비수준이 높을수록 높은 경향을 보였고, 10일에 최고수준을 보인 후 완만한 감소를 나타냈으며, $K^{+}$, $Ca^{2+}$에 비해 $Mg^{2+}$이 보다 낮은 함량을 보였다.989년산 일반계를 10분도와 12분도로 도정하였을 때 도정도에 따른 밥맛의 차이는 없었다.X>$CoO_x$는 $Co_3O_4$로 존재하고, 반응 전의 경우에는 이와는 다른 chemical state를 보여주었다. XRD 및 XPS 결과를 바탕으로, 촉매표면에 존재하는 $Co_3O_4$의 외부표면이 $Co_2TiO_4$$CoTiO_3$ 같은 $CoTiO_x$로 encapsulation되어 있는 모델구조를 제안할 수 있고, 이는 반응시간의 함수로 나타나는 촉매활성에 있어서 전이영역의 존재를 잘 설명할 수 있을 뿐만 아니라, XRD와 XPS에서 얻어진 촉매의 물리화학적인 특성을 잘 반영할 수 있다. 나타냈고, 골격근과 눈 조직에서 피루브산에 대한 LDH의 친화력이 상당히 크므로 LDH가 혐기적 조건에서 효율적으로 기능을 하는 것으로 사료된다.5) and "Cleanliness of clothes & features" (p <0.05) of VIP ward were significantly higher than those of a general ward.tive to apply.아울러 고려(考慮)해야 한다. 이것은 고무기술자(技術者)가 당면(當面)해야할 과제(課題)에 속(屬)하며 바람직 한것은 본장(本章)의 내용(內容)이 여러 상황하(狀況下)에서 당면(當面)한 문제(問題)에 대(對)해 어떻게 대처(對處)해 야 할지를 모르는 여러 기술자(技術者)들에게

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Effects of Ultra High Molecular Weight Poly-${\gamma}$-glutamic Acid from Bacillus subtilis (chungkookjang) on Corneal Wound Healing

  • Bae, Sun-Ryang;Park, Chung;Choi, Jae-Chul;Poo, Ha-Ryoung;Kim, Chul-Joong;Sung, Moon-Hee
    • Journal of Microbiology and Biotechnology
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    • 제20권4호
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    • pp.803-808
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    • 2010
  • Poly-${\gamma}$-glutamic acid (${\gamma}$-PGA) is a natural edible polypeptide in which glutamate is polymerized via ${\gamma}$-amide linkages. First, we assessed the eye irritancy potential of ${\gamma}$-PGA in rabbits. Additionally, we studied the effects of ${\gamma}$-PGA on corneal wound healing, due to the anti-inflammatory properties and water retaining abilities of ${\gamma}$-PGA. In this study, the effects of ${\gamma}$-PGA on corneal wound healing after an alkali burn were evaluated. Thirty eyes wounded by alkali burning in 30 white rabbits were divided into three groups: group A was treated with 0.1% 5,000 kDa ${\gamma}$-PGA for 2 days; group B was treated with 0.1% hyaluronic acid; and group C was not treated, as a control. The area of corneal epithelial defect was examined at 12, 24, 30, 36, 42, and 48 h after corneal alkali wounding to determine initial wound healing. We found that ${\gamma}$-PGA promoted corneal wound healing, compared with controls, and showed similar effects to hyaluronic acid. These results indicate that ${\gamma}$-PGA stimulates corneal wound healing by an anti-inflammatory effect and enhancing cell migration and cell proliferation. ${\gamma}$-PGA is a promising biomaterial that may be a substitute for hyaluronic acid in corneal wound healing treatment.

In Vivo Hair Growth Promotion Effects of Ultra-High Molecular Weight Poly-γ-Glutamic Acid from Bacillus subtilis (Chungkookjang)

  • Choi, Jae-Chul;Uyama, Hiroshi;Lee, Chul-Hoon;Sung, Moon-Hee
    • Journal of Microbiology and Biotechnology
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    • 제25권3호
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    • pp.407-412
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    • 2015
  • We investigated the effect of ultra-high molecular weight poly-γ-glutamic acid (UHMW γ-PGA) on hair loss in vitro and in vivo. 5-Alpha reductase is an enzyme that metabolizes the male hormone testosterone into dihydrotestosterone. By performing an in vitro experiment to analyze the inhibitory effects of UHMW γ-PGA on 5-alpha reductase activity, we determined that UHMW γ-PGA did in fact inhibit 5-alpha reductase activity, indicating the use of UHMW γ-PGA as a potential 5-alpha reductase inhibitor in the treatment of men with androgenetic alopecia. To evaluate the promotion of hair growth in vivo, we topically applied UHMW γ-PGA and minoxidil on the shaved dorsal skin of telogenic C57BL/6 mice for 4 weeks. At 4 weeks, the groups treated with UHMW γ-PGA showed hair growth on more than 50% of the shaved skin, whereas the control group showed less hair growth. To investigate the progression of hair follicles in the hair cycle, hematoxylin and eosin staining was performed. Histological observations revealed that the appearance of hair follicles was earlier in the UHMW γ-PGA-treated group than in the control group. The number of hair follicles on the relative area of shaved skin in the UHMW γ-PGA-treated group was higher than that observed on the shaved skin in the control group. These results indicate that UHMW γ-PGA can promote hair growth by effectively inducing the anagen phase in telogenic C57BL/6 mice.

High-Molecular-Weight Poly-Gamma-Glutamate Protects Against Hypertriglyceridemic Effects of a High-Fructose Diet in Rat

  • Jeon, Yeong Hui;Kwak, Mi-Sun;Sung, Moon-Hee;Kim, Sun-Hee;Kim, Myung-Hwan;Chang, Moon-Jeong
    • Journal of Microbiology and Biotechnology
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    • 제23권6호
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    • pp.785-793
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    • 2013
  • We studied the effects of 2 different dosages of high-molecular-weight poly-${\gamma}$-glutamic acid (hm ${\gamma}$-PGA) derived from Bacillus subtilis chungkookjang on lipid metabolism in a high-fructose diet-induced hypertriglyceridemic animal model. For 4 weeks, rats were fed either AIN-93 diet (normal control, NC; n = 10) or modified AIN-93 diet in which cornstarch was substituted with 63% fructose (n = 30) to induce hypertriglyceridemia. After 4 weeks, the hypertriglyceridemic rats were treated with daily oral doses of 0 mg (hypertriglyceridemic control, HC), 2.5 mg (hypertriglyceridemic, low hm ${\gamma}$-PGA, HL), or 5 $mg{\cdot}kg{\cdot}bw^{-1}{\cdot}d^{-1}$ (hypertriglyceridemic, high hm ${\gamma}$-PGA, HH) hm ${\gamma}$-PGA for 4 weeks. The HL and HH groups exhibited significantly lower levels of serum triglyceride, total cholesterol, LDL cholesterol, and free fatty acids than the HC group. The administration of hm ${\gamma}$-PGA reduced serum ALT and AST levels. The activities of lipogenic enzymes such as hepatic malic enzyme and glucose-6-phosphate dehydrogenase as well as glucose-6-phosphate dehydrogenase mRNA expression were significantly decreased by hm ${\gamma}$-PGA administration (p < 0.05). These results indicate that hm ${\gamma}$-PGA has an anti-hypertriglyceridemic effect in high-fructose diet-induced hypertriglyceridemic rats.