• Title/Summary/Keyword: lactobacillus plantarum(LP)

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Lactobacillus plantarum LP2 균주의 Helicobacter pylori 억제효과 (Antimicrobial Activity of Lactobacillus plantarum LP2 against Helicobacter pylori)

  • 김태중;문기성
    • 한국식품위생안전성학회지
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    • 제30권4호
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    • pp.372-375
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    • 2015
  • 비피도박테리아 증식인자인 1,4-dihydroxy-2-naphthoic acid 생산 유산균주 LP2가 선행연구에서 자연치즈로부터 분리되었다. LP2 균주는16S rRNA 유전자 염기서열 분석에 의한 균주동정에서 Lactobacillus plantarum(99% 일치율)과 가장 높은 상동성을 나타내어 Lactobacillus plantarum LP2 균주로 명명하였다. LP2 균주의 배양 상등액은 Helicobacter pylori KCTC 12083 균주에 대하여 항균활성을 나타내었으며 이는 생산된 DHNA에 기인하는 것으로 추측되었다.

김치에서 분리한 Lactobacillus plantarum Lp2의 항균작용 (Antimicrobial Activity of Lactobacillus plantarum Lp2 Isolated from Kimchi)

  • 박연희;송현주
    • 한국미생물·생명공학회지
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    • 제19권6호
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    • pp.637-643
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    • 1991
  • 김치에서 Lactobacillus plantarum Lp2를 분리하여 E.coli, Staphylococcus aureus 등 5종의 식품관련 세균에 대한 억제작용과 억제물질의 특성을 조사하였다. Lp2 배양액의 ether extract는 E.coli, Pseudomonas aeruginosa 및 호냉성 균주 Pc1에 대하여는 매우 강한 억제작용을 보였으나, Stapylococcus aureus와 Streptococcus faecalis에 대하여는 그 작용이 미약하였다. 이 물질은 methanol, acetone 및 ether에 가용성이며 pH가 5~6 사이에서 억제작용을 나타내었으며 중성 부근에서는 그 작용이 상실되었다. 이 물질은 열에 비교적 안정하며 분자량은 1000 이하인것으로 밝혀졌고 TLC에 의한 분리 결과는 $R_f$값이 0.73인 band에 억제물질이 함유된 것으로 확인하였다.

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Microencapsulation of Lactobacillus plantarum MB001 and its probiotic effect on growth performance, cecal microbiome and gut integrity of broiler chickens in a tropical climate

  • Sasi Vimon;Kris Angkanaporn;Chackrit Nuengjamnong
    • Animal Bioscience
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    • 제36권8호
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    • pp.1252-1262
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    • 2023
  • Objective: Microencapsulation technologies have been developed and successfully applied to protect the probiotic bacterial cells damaged by environmental exposure. This study aimed to investigate the effects of microencapsulation of Lactobacillus plantarum MB001 on the growth performance, ileal nutrient digestibility, jejunal histomorphology and cecal microbiome of broiler chickens in a tropical climate. Methods: A total of 288 one-day-old female broilers (Ross 308) were randomly allocated into 4 groups (6 replicates of 12 birds). Treatments included, i) a basal diet (NC), ii) NC + avilamycin (10 mg/kg) (PC), iii) NC + non-encapsulated L. plantarum MB001 (1×108 colony-forming unit [CFU]/kg of diet) (N-LP), iv) NC + microencapsulated L. plantarum MB001 (1×108 CFU/kg of diet) (ME-LP). Results: Dietary supplementation of ME-LP improved average daily gain, and feed conversion ratio of broilers throughout the 42-d trial period (p<0.05), whereas ME-LP did not affect average daily feed intake compared with NC group. Both N-LP and ME-LP improved apparent ileal digestibility of crude protein and ether extract compared with NC group (p<0.05). The broilers fed ME-LP supplemented diet exhibited a beneficial effect on jejunal histomorphology of villus height (VH), crypt depth (CD) and villus height to crypt depth ratio (VH:CD) of broilers compared to NC group (p<0.05). At the phylum level, Firmicutes was enriched (p<0.05) and Proteobacteria was decreased (p<0.05) only in the ME-LP group. At the genus level, the ME-LP diets increased (p<0.05) the number of both Lactobacillus and Enterococcus compared to NC, PC, and N-LP groups (p<0.05). Conclusion: Microencapsulation assists the efficient functioning of probiotics. ME-LP could be potentially used as a feed additive for improvement of cecal microbiota, gut integrity and nutrient utilization, leading to better performance of broilers.

김치에서 분리한 Lactobacillus plantarum 균주들의 프로바이오틱 효과 (Probiotic Effects of Lactobacillus plantarum Strains Isolated from Kimchi)

  • 이설매;이현아;권미라;박의성;박건영
    • 한국식품영양과학회지
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    • 제45권12호
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    • pp.1717-1724
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    • 2016
  • 본 연구에서는 김치에서 분리한 L. plantarum pF1 NITE-P1462(Lp-pF1), L. plantarum KCCM 11352P(Lp-PNU), L. plantarum CBT LP3 KCTC 10782BP(Lp-CB)와 L. plantarum KCTC 3099(Lp-3099)의 프로바이오틱 효과(내산 및 내담즙성 측정, 장 부착능과 열 안정성, 항산화 및 항암 기능성의 측정)를 된장에서 유래한 Lac. lactis KFCC 11510P(L-lactis)와 비교하여 측정하였다. 그 결과 4종의 김치 L. plantarum이 Lac. lactis보다 전반적으로 높은 프로바이오틱 효과를 나타내었다. 4종의 김치 L. plantarum 중 내산 및 내담즙성 측정에서 Lp-pF1이 유의적으로 가장 높은 안정성을 나타냈고, 장 부착능 측정에서도 Lp-pF1이 Lp-CB와 함께 가장 뛰어난 부착능을 보였으며, 열 안정성 측면에서는 Lp-pF1과 Lp-PNU가 가장 높은 안정성을 가진 것으로 나타났다. 또한, DPPH 라디칼 및 수산화 라디칼소거 활성 측정을 통해 Lp-pF1이 모든 유산균 중 유의적으로 가장 높은 항산화 활성을 나타내었고, HT-29 인체 대장암세포에서도 가장 높은 암세포 성장 억제 효과를 나타냈다. 따라서 Lp-pF1의 프로바이오틱으로서의 이용가능성을 확인하였으며, Lp-pF1은 특히 높은 항산화 및 항암 활성을 가지고 있어 향후 기능성 프로바이오틱으로 활용할 가능성이 높다고 할 수 있다. 또한, Lp-pF1을 앞서 연구했던 나노화된 Lp-pF1과 함께 섭취하였을 때 단독으로 Lp-pF1만 섭취하는 것보다 더 높은 건강 기능적 효과가 기대되며, 이에 대한 연구도 추가적으로 필요할 것으로 생각된다.

Dead Lactobacillus plantarum Stimulates and Skews Immune Responses toward T helper 1 and 17 Polarizations in RAW 264.7 Cells and Mouse Splenocytes

  • Lee, Hyun Ah;Kim, Hyunung;Lee, Kwang-Won;Park, Kun-Young
    • Journal of Microbiology and Biotechnology
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    • 제26권3호
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    • pp.469-476
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    • 2016
  • This study was undertaken to evaluate the immunomodulatory effect of dead nano-sized Lactobacillus plantarum (nLp) in RAW 264.7 cells and murine primary splenocytes. nLp is a dead, shrunken, processed form of L. plantarum nF1 isolated from kimchi (a traditional Korean fermented cabbage) and is less than 1 μm in size. It was found that nLp treatment stimulated nitric oxide (NO) production more in RAW 264.7 macrophages than pure live L. plantarum (pLp), and that the stimulatory properties were probably largely derived from its cell wall. In addition, nLp induced murine splenocyte proliferation more so than pLp; in particular, a high dose of nLp (1.0 × 1011 CFU/ml) stimulated proliferation as much as lipopolysaccharide at 2 μg/ml. Moreover, according to our cytokine profile results in splenocytes, nLp treatment promoted Th1 (TNF-α, IL-12 p70) responses rather than Th2 (IL-4, IL-5) responses and also increased Th17 (IL-6, IL-17A) responses. Thus, nLp stimulated NO release in RAW 264.7 cells and induced splenocyte proliferation more so than pLp and stimulated Th1 and Th17 cytokine production. These findings suggested that dead nLp has potential use as a functional food ingredient to improve the immune response, and especially as a means of inducing Th1/Th17 immune responses.

Immune-Enhancing Effect of Nanometric Lactobacillus plantarum nF1 (nLp-nF1) in a Mouse Model of Cyclophosphamide-Induced Immunosuppression

  • Choi, Dae-Woon;Jung, Sun Young;Kang, Jisu;Nam, Young-Do;Lim, Seong-Il;Kim, Ki Tae;Shin, Hee Soon
    • Journal of Microbiology and Biotechnology
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    • 제28권2호
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    • pp.218-226
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    • 2018
  • Nanometric Lactobacillus plantarum nF1 (nLp-nF1) is a biogenics consisting of dead L. plantarum cells pretreated with heat and a nanodispersion process. In this study, we investigated the immune-enhancing effects of nLp-nF1 in vivo and in vitro. To evaluate the immunostimulatory effects of nLp-nF1, mice immunosuppressed by cyclophosphamide (CPP) treatment were administered with nLp-nF1. As expected, CPP restricted the immune response of mice, whereas oral administration of nLp-nF1 significantly increased the total IgG in the serum, and cytokine production (interleukin-12 (IL-12) and tumor necrosis factor alpha (TNF-${\alpha}$)) in bone marrow cells. Furthermore, nLp-nF1 enhanced the production of splenic cytokines such as IL-12, TNF-${\alpha}$, and interferon gamma (IFN-${\gamma}$). In vitro, nLp-nF1 stimulated the immune response by enhancing the production of cytokines such as IL-12, TNF-${\alpha}$, and IFN-${\gamma}$. Moreover, nLp-nF1 given a food additive enhanced the immune responses when combined with various food materials in vitro. These results suggest that nLp-nF1 could be used to strengthen the immune system and recover normal immunity in people with a weak immune system, such as children, the elderly, and patients.

김치숙성 관련 젖산균이 식빵의 품질에 미치는 영향 (Effect of Lactic Acid Bacteria notated to Kimchi Fermentation on the Quality of Bread)

  • 이예경;박인경;김순동
    • 동아시아식생활학회지
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    • 제11권5호
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    • pp.379-385
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    • 2001
  • 김치숙성관련 젖산균이 반죽의 발효와 빵의 품질에 미치는 영향을 조사하였다. 젖산균, Lactobacillus plantarum(LP), Leuconostoc mesenteroides(LM)은 살균 무즙에 배양하여 각각 또는 혼합하여 밀가루량에 대하여 5% 및 10%씩 첨가하였으며 혼합처리구는 LP 5%와 LM 5%를 혼합하였다. 반죽의 pH는 LP+LM 첨가구에서 가장 낮았다. LM 5% 첨가구는 발효시간이 가장 짧았으며, loaf volume은 LM 10%첨가구가 가장 컸다. 빵의 저장중 수분 손실율은 전반적으로 젖산균 첨가구가 대조구보다 낮았으며, LP+LM 혼합 첨가구에서 가장 낮았다. 빵의 경도는 젖산균 첨가군에서 전반적으로 낮았으며 LP 10% < LM 10% < LM 5% < LM+LP < LP 5% < 대조구 순서였다. 빵의 노화도는 젖산균 첨가군이 대조구보다 낮았으며 LM 10%와 LP 10%에서 가장 낮았다.

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Combination Therapy of Lactobacillus plantarum Supernatant and 5-Fluouracil Increases Chemosensitivity in Colorectal Cancer Cells

  • An, JaeJin;Ha, Eun-Mi
    • Journal of Microbiology and Biotechnology
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    • 제26권8호
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    • pp.1490-1503
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    • 2016
  • Colorectal cancer (CRC) is the third most common cancer in the world. Although 5-fluorouracil (5-FU) is the representative chemotherapy drug for colorectal cancer, it has therapeutic limits due to its chemoresistant characteristics. Colorectal cancer cells can develop into cancer stem cells (CSCs) with self-renewal potential, thereby causing malignant tumors. The human gastrointestinal tract contains a complex gut microbiota that is essential for the host's homeostasis. Recently, many studies have reported correlations between gut flora and the onset, progression, and treatment of CRC. The present study confirms that the most representative symbiotic bacteria in humans, Lactobacillus plantarum (LP) supernatant (SN), selectively inhibit the characteristics of 5-FU-resistant colorectal cancer cells (HT-29 and HCT-116). LP SN inhibited the expression of the specific markers CD44, 133, 166, and ALDH1 of CSCs. The combination therapy of LP SN and 5-FU inhibited the survival of CRCs and led to cell death by inducing caspase-3 activity. The combination therapy of LP SN and 5-FU induced an anticancer mechanism by inactivating the Wnt/β-catenin signaling of chemoresistant CRC cells, and reducing the formation and size of colonospheres. In conclusion, our results show that LP SN can enhance the therapeutic effect of 5-FU for colon cancer, and reduce colorectal cancer stem-like cells by reversing the development of resistance to anticancer drugs. This implies that probiotic substances may be useful therapeutic alternatives as biotherapeutics for chemoresistant CRC.

Effect of Different Pediococcus pentosaceus and Lactobacillus plantarum Strains on Quality Characteristics of Dry Fermented Sausage after Completion of Ripening Period

  • Seleshe, Semeneh;Kang, Suk Nam
    • 한국축산식품학회지
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    • 제41권4호
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    • pp.636-649
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    • 2021
  • The aim of this study was to evaluate the effect of three different strains of lactic acid bacteria (LAB) starter cultures: Pediococcus pentosaceus (KC-13100) (PP), Lactobacillus plantarum (KCTC-21004) (LP1), and L. plantarum (KCTC-13093) (LP2) on the physicochemical and microbiological characteristics, and sensory quality of dry fermented sausages after 21 days of drying and ripening period. Treatments added with PP and LP2 strains showed a significant higher (p<0.05) LAB and total plat counts, and water activity (aw) of all three treatments was below 0.85 after the completion of the ripening process. A significant variation (p<0.05) in pH values of treatments was exhibited due to the difference in acidification capacity of the LAB strains: LP2PP>LP2. Substantial variations (p<0.05) in shear force values were detected amongst three batches (LP2>LP1>PP). In sensory attributes, PP treated samples had significantly higher (p<0.05) color and overall acceptability scores. The current findings proved how important the optimal assortment of starter culture. Inoculation with PP produced importantly beneficial effects on sensory quality improvement of dry fermented sausage.

생균제 첨가사료가 조피볼락 Sebastes schlegeli의 성장 및 혈액성분에 미치는 영향 (Effects of Dietary Supplement of Probiotics on Growth and Blood Assay of Rockfish Sebastes schlegeli)

  • 박상현;왕순영;한경남
    • 한국양식학회지
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    • 제21권1호
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    • pp.1-6
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    • 2008
  • 조피볼락 Sebastes schlegeli 치어의 성장률 향상을 도모하고 적용할 만한 생균제로서의 그 가능성을 보고자, 평균 체중 0.7 g의 조피볼락 치어에 2종의 유산균을 사료에 첨가하여 본 실험을 수행하였다. 각각의 첨가구는 Lactobacillus brevis 및 Lactobacillus plantarum을 농도별로 실험사료 1 g 중량당 유산균 첨가수준을 $10^4,\;10^6$$10^8$ cfu 수준으로 처리한 첨가구로 하였다. 성장효과에서 L. plantarum을 농도별로 실험사료 1g 중량당 유산균 첨가수준을 $10^8$ cfu 수준으로 처리한 Lp-8 실험구에서 중량 증가 효과가 있었으며, L. brevis의 경우는 첨가효과가 없었다. 실험종료 후, 혈액분석 결과는 hematocrit 28.5-32.5%, hemoglobin 8.3-8.6 g/dl으로 차이는 없었으나, 혈장 내 총 단백질 함량은 Lp-8 실험구에서 높았다. 혈장 내 총 콜레스테롤 함량은 유산균 2종에서 높은 첨가농도 일수록 그 수치가 낮아지는 경향을 보였다. 상기 실험결과로 미루어 볼 때, 수중환경에 서식하는 어류의 장내 정상적인 균주가 아닌 유산균은 개별적 종에 따라 다른 효과를 얻을 수는 있으나, 조피볼락 치어는 L. plantarum을 $10^8$ cfu/g 수준으로 사료 내 첨가하여 성장효과를 거둘 수 있었다.