• 제목/요약/키워드: Solid culture

검색결과 602건 처리시간 0.029초

Solid-State Culture를 이용하여 조제한 노루궁뎅이버섯 균사체-뽕잎발효물의 면역 및 항염증 활성 (Immunomodulatory and Anti-Inflammatory Activity of Mulberry (Morus alba) Leaves Fermented with Hericium erinaceum Mycelium by Solid-State Culture)

  • 김훈;정재현;신지영;김동구;유광원
    • 한국식품영양과학회지
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    • 제40권9호
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    • pp.1333-1339
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    • 2011
  • 뽕잎(Morus alba leaves)의 생리활성을 증강시키기 위하여 solid-state culture 방법을 이용하여 노루궁뎅이버섯 균사체(Hericium erinaceum)를 뽕잎에 배양하여 조제한 노루궁뎅이버섯 균사체-뽕잎발효물(MA-HE)을 열수(MA-HE-HW)와 에탄올(MA-HE-E)로 추출하였다. MA-HE의 용매 추출물 중 MA-HE-HW는 $100\;{\mu}g$/mL의 시료농도에서 시료대조군인 비발효 뽕잎 또는 액체배양으로 얻은 노루궁뎅이 균사체 종균의 열수추출물(MA-HW와 HE-HW)보다 증강된 마이토젠 및 장관면역활성을 나타내었다(각각 saline 대조군의 1.41과 1.52배). 한편, LPS로 자극한 RAW 264.7 murine macrophage에서 염증반응에 중요하게 관여하는 매개인자인 nitric oxide, tumor necrosis factor-${\alpha}$, interleukin-$1{\beta}$ 및 IL-6의 생성 억제효과를 확인한 결과, MA-HE-E는 $1,000\;{\mu}g$/mL의 농도에서 LPS 처리군 및 시료대조군보다 유의적으로 증강된 항염증활성을 나타내었다(LPS 처리군의 45.1, 41.3, 70.2와 55.7% 억제). 또한, RAW 264.7 세포에 대하여 노루궁뎅이버섯 균사체-뽕잎발효물의 MA-HE-HW와 MA-HE-E는 $1,000\;{\mu}g$/mL의 고농도에서도 독성을 나타내지 않았으나 시료대조군 중 에탄올추출물인 HE-E와 MA-E는 각각 80.1과 30.7%의 세포생존률을 나타내어 독성이 있음을 알 수 있었다. 이러한 결과는 solid-state culture를 이용한 노루궁뎅이버섯 균사체의 뽕잎발효는 비발효 뽕잎보다 면역활성 및 항염증활성을 증가시킬 뿐만 아니라 독성을 감소시키는데 중요하게 작용하고 있어 균사체 발효과정에서 뽕잎에 생물학적인 전환과정이 일어나고 있음을 확인할 수 있었다.

Detection of Mold by Enzyme-Linked Immunosorbent Assay

  • Kwak, Bo-Yeon;Kim, Soon-Young;Shon, Dong-Hwa
    • Journal of Microbiology and Biotechnology
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    • 제9권6호
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    • pp.764-772
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    • 1999
  • To develop an enzyme-linked immunosorbent assay (ELISA) for detecting mold, we produced anti-mold polyclonal antibodies by immunizing extracellular polysaccharide (EPS) of Aspergillus flavus or Penicillium citrinum in rabbits subcutaneously. Using the purified antibody (Ab) and Ab-HRP conjugate, a sandwich ELISA for EPS was established. The standard curve of the ELISA showed the detection limit for P citrinum EPS to be $0.003{\;}\mu\textrm{g}/ml$. The cross-reactivities of the anti-P citrinum EPS Ab toward components of P citrinum such as EPS, liquid, and solid culture mycelium were 100, 10.5, and 0.58%, respectively, and those toward components of A. flavus such as EPS, liquid and solid culture mycelium, and spore were 300, 0.67, 0.29, and 0%, respectively. When the reactivities toward culture broths of 59 mold strains were tested by the sandwich ELISA, most of the Aspergillus (16 of 18) and Penicillium (14 of 16) strains along with one of the two Cladosporium strains gave positive signals in the culture broths even when diluted 1,000 fold, while the rest of species such as Fusarium, Absidia, Alternaria, and Candida gave negative signals. When the water extracts of 30 corn samples were analyzed by the sandwich ELISA, the EPS in the com could be detected in the concentration range of $0.1-1.6{\;}\mu\textrm{g}/g$.

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Improved Optimization of Indirubin Production from Bioreactor Culture of Polygonum tinctorium

  • Chung, Choong Sik;Kim, Kyung Il;Bae, Geun Won;Lee, Youn Hyung;Lee, Hyong Joo;Chae, Young Am;Chung, In Sik
    • Journal of Applied Biological Chemistry
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    • 제43권2호
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    • pp.109-111
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    • 2000
  • Effect of the two-stage operation and cell concentration on indirubin production was investigated using bioreactor culture of Polygonum tinctorium. Two-stage culture was operated successfully for 110 days without any adverse effects on continuous indirubin production. Maximum indirubin concentration was found to be at 80 mg/bioreactor. Initial cell concentration significantly affected indirubin production. The indirubin production at 29.2% PCV was improved by 845%, compared to that at 5% PCV. For high-density bioreactor culture of P. tinctorium, a maximum production rate of 10.2 mg indirubin/L day was obtained. Indirubin recovery for bioreactor operation was also examined using XAD-2, XAD-4, XAD-7, and solid silicon. XAD-4 was 1.6-fold more effective than that for solid silicon in indirubin recovery.

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응유효소 생산을 위한 Mucor mucedo C-7의 배양조건 (The Culture Conditions of Mucor mucedo C-7 for Producing the Milk-Clotting Enzyme)

  • 조재민;이웅수;김교창
    • 한국식품영양과학회지
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    • 제21권4호
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    • pp.418-422
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    • 1992
  • 효과적인 응유효소 생산을 위해 응유효소 생산 균주로 선정된 Mucor mucedo C-7을 밀기울 고체배지에 배양하여 최적 배양 조건을 검토하였다. 그 결과 밀기울에 대한 첨수량은 밀기울량에 100% 첨수하였을때 효소 생산이 가장 양호하였으며 배양 은도와 시간은 각각 3$0^{\circ}C$, 72시간이 가장 적당함을 알 수 있었다. 또 밀기울 배지에 증류수 대신 Macllvaine 완충용액 (pH4.5)을 첨가 하였을 경우 효소 생산은 현저히 증가하였으며 응유효소의 활성도 중류수를 첨수한 경우 보다 안정함을 알 수 있었다.

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제주 송이를 이용한 방울토마토 양액재배시 양액성분 및 생육에 관한 연구 (Study on the Nutrient Solution Content and Growth of Cherry Tomato in Scoria Culture)

  • 장전익;오대민;현해남
    • 생물환경조절학회지
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    • 제4권1호
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    • pp.43-49
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    • 1995
  • 양액재배에서 제주송이가 다른 배지와 비교하여 방울토마토의 수량 및 품질에 미치는 영향과 양액성분 변화를 조사하여 제주송이를 양액재배용 고형배지로 실용화하기 위하여 시험한 결과는 다음과 같다. 1. 건엽비, 건과비, 당산비는 1익㉣ 1회 1시간 담액후에 완전 배액한 구에서 높았다. 2. 방울토마토 생과중은 상위 화방으로 갈수록 암면구와 담액수경구는 작아졌으나, 송이구와 일향토구, 펄라이트구 등 고형배지경에서 무거웠다. 3. 방울토마토의 생육이 왕성한 시기에 양액성분중 다량원소를 분석한 결과는 송이 재배구에서 인산과 칼륨 농도가 낮았다. 4. 방울토마토의 수량과 당도는 암면과 일향토구에서 높은 경향을 보였다. 5. 일반적으로 양액재배에서는 수분의 증발과 식물의 수분 흡수 증산작용으로 비료염의 농도가 높아가는데 송이구도 다른 고형배지경과 비슷한 결과를 보였다. 6. 제주 송이 양액재배용 고형배지로 손쉽게 이용할 수 있는 가벼운 자재로 가공개발 연구가 있어야 할 것으로 본다.

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Chitinase을 생산하는 곤충병원미생물 Metarhizium anisopliae HY-2(KCTC 0156BP)의 토양해충 생물검정

  • 서은영;손광희;신동하;김기덕;박두상;박호용
    • 한국생물공학회:학술대회논문집
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    • 한국생물공학회 2002년도 생물공학의 동향 (X)
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    • pp.469-472
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    • 2002
  • 균체 생산성 실험과 chitinase 생산성 실험을 비교해 볼 때, chitinase만을 생산하는 조건 에서는 배지성분에 chitin을 첨가해 주는 것이 좋으나, 해충 방제용으로 살균력을 증진시키기 위하여 균체량과 chitinase의 생성량 및 산업적, 경제적 사용이 용이한 배지를 고려할 때에는 쌀겨와 밀기울이 첨가된 배지가 좋은 배지임을 알 수 있었다. 또한 이 배지를 이용하였을 경우 균체는 1X$10^8$ cfu/g, chitinase는 370mU/g로 생산되었으며 생물검정결과 53-64%의 탁월한 살충효과를 확인 할 수 있었다.

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Strain Selection and Optimization of Mixed Culture Conditions for Lactobacillus pentosus K1-23 with Antibacterial Activity and Aureobasidium pullulans NRRL 58012 Producing Immune-Enhancing β-Glucan

  • Sekar, Ashokkumar;Kim, Myoungjin;Jeong, Hyeong Chul;Kim, Keun
    • Journal of Microbiology and Biotechnology
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    • 제28권5호
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    • pp.697-706
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    • 2018
  • Lactobacillus pentosus K1-23 was selected from among 25 lactic acid bacterial strains owing to its high inhibitory activity against several pathogenic bacteria, including Escherichia coli, Salmonella typhimurium, S. gallinarum, Staphylococcus aureus, Pseudomonas aeruginosa, Clostridium perfringens, and Listeria monocytogenes. Additionally, among 13 strains of Aureobasidium spp., A. pullulans NRRL 58012 was shown to produce the highest amount of ${\beta}$-glucan ($15.45{\pm}0.07%$) and was selected. Next, the optimal conditions for a solid-phase mixed culture with these two different microorganisms (one bacterium and one yeast) were determined. The optimal inoculum sizes for L. pentosus and A. pullulans were 1% and 5%, respectively. The appropriate inoculation time for L. pentosus K1-23 was 3 days after the inoculation of A. pullulans to initiate fermentation. The addition of 0.5% corn steep powder and 0.1% $FeSO_4$ to the basal medium resulted in the increased production of lactic acid bacterial cells and ${\beta}$-glucan. The following optimal conditions for solid-phase mixed culture were also statistically determined by using the response surface method: $37.84^{\circ}C$, pH 5.25, moisture content of 60.82%, and culture time of 6.08 days for L. pentosus; and $24.11^{\circ}C$, pH 5.65, moisture content of 60.08%, and culture time of 5.71 days for A. pullulans. Using the predicted optimal conditions, the experimental production values of L. pentosus cells and ${\beta}$-glucan were $3.15{\pm}0.10{\times}10^8CFU/g$ and $13.41{\pm}0.04%$, respectively. This mixed culture may function as a highly efficient antibiotic substitute based on the combined action of its anti-pathogenic bacterial and immune-enhancing activities.

현사시나무 기내배양(器內培養) 엽육조직(葉肉組織)에서 분리(分離)된 원형질체(原形質体) 배양(培養) 및 식물체(植物体) 재분화(再分化) (Culture and Regeneration of Populus alba × glandulosa Leaf Protoplasts Isolated from in vitro Cultured Explant)

  • 박용구;손성호
    • 한국산림과학회지
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    • 제77권2호
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    • pp.208-215
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    • 1988
  • 현사시(Populus alba ${\times}$ glandulosa) 기내배양(器內培養)한 엽육조직(葉肉組織)에서 원형질체(原形質體)를 분리(分離), 배양(培養)하여 식물체(植物體) 재분화(再分化) 과정(過程)에 관(關)해 조사(調査) 검토(檢討)하였다. $NH_4NO_3$를 뺀 MS배지(培地)에 BAP 0.5mg/l와 2.4-D 2.0mg/l를 첨가(添加)하여 liquid plating 법(法)으로 원형질체(原形質體)를 배양(培養)하였을때 비교적(比較的) 높은 세포분열(細胞分裂)이 일어났다. colony 형성율(形成率)은 gauze를 넣은 semi-solid agar plating 법(法)에서 가장 높게 일어나서 배양(培養) 5주후(週後)에는 micro-callus가 형성(形成)되었다. gauze를 제거(除去)한 후(後)에는 원형질체(原形質體) 분리배양후(分離培養後) 8주(週)가 되었을때 mini-callus가 형성(形成)되었으며 이들 callus는 2, 4-D 0.5mg/l와 BAP 0.1mg/l를 첨가(添加)한 MS배지에서 증식되었다. shoot 형성(形成)은 zeatin 1.0mg/l를 첨가(添加)한 배지에서 이식한지 3주(週)만에 일어나기 시작했으며 6주후(週後)에 뿌리발달을 도모하고져 생장조절물질(生長調節物質)이 첨가(添加)되지 않은 1/2MS배지로 이식하였다. 이식한지 4주후(週後)에 많은 뿌리가 형성(形成)되었다. 발근(發根)이 된 개체(個體)는 온실(温室)에 이식(移植)하였는데 원형질체(原形質體)를 분리(分離)하여 완전식물체(完全植物體)로 분화(分化)시켜 온실(温室)에 이식(移植)하기 까지는 22주(週)가 걸렸다.

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Reverse Micellar Extraction of Fungal Glucoamylase Produced in Solid-State Fermentation Culture

  • Paraj, Aliakbar;Khanahmadi, Morteza;Karimi, Keikhosro;Taherzadeh, Mohammad J.
    • Journal of Microbiology and Biotechnology
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    • 제24권12호
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    • pp.1690-1698
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    • 2014
  • Partial purification of glucoamylase from solid-state fermentation culture was, firstly, investigated by reverse micellar extraction (RME). To avoid back extraction problems, the glucoamylase was kept in the original aqueous phase, while the other undesired proteins/enzymes were moved to the reverse micellar organic phase. The individual and interaction effects of main factors (i.e., pH and NaCl concentration in the aqueous phase, and concentration of sodium bis-2-ethyl-hexyl-sulfosuccinate (AOT) in the organic phase) were studied using response surface methodology. The optimum conditions for the maximum recovery of the enzyme were pH 2.75, 100 mM NaCl, and 200 mM AOT. Furthermore, the optimum organic to aqueous volume ratio ($V_{org}/V_{aq}$) and appropriate number of sequential extraction stages were 2 and 3, respectively. Finally, 60% of the undesired enzymes including proteases and xylanases were removed from the aqueous phase, while 140% of glucoamylase activity was recovered in the aqueous phase and the purification factor of glucoamylase was found to be 3.0-fold.

Optimization of Carbon Sources to Improve Antioxidant Activity in Solid State Fermentation of Persimmon peel Using Lactic Acid Bacteria

  • Hwang, Joo Hwan;Kim, Eun Joong;Lee, Sang Moo
    • 한국초지조사료학회지
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    • 제32권4호
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    • pp.361-368
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    • 2012
  • The present study was conducted to develop persimmon peel, a by-product of dried persimmon manufacturing, as a feed additive via lactic acid bacteria fermentation. Pediococcus pentosaceus, Lactobacillus plantarum, and three strains of Leuconostoc mesenteroides were used as a starter culture in the solid state fermentation of persimmon peel, and antioxidant activity and total polyphenol content were assessed. Leuconostoc mesenteroides KCTC 3100 showed high antioxidant activity (p<0.05), whereas Pediococcus pentosaceus showed high total polyphenol content (p<0.05). These two strains were thus selected as starter culture strains. Glucose, sucrose and molasses were used as variables for optimization and a total 15 experimental runs were produced according to Box-Behnken design. Regarding significant effects of variables, molasses showed linear and square effects on antioxidant activity of persimmon peel fermentation (p<0.05). In conclusion, optimum concentrations of glucose, sucrose, and molasses were determined to be 4.2, 3.9 and 5.3 g/L, respectively, using a response surface model. Antioxidant activity was also improved 2.5 fold after optimization.