1
|
Hwang CY, Seo SM, Cho ES, Nam YD, Park SL, Lim SI, Seo MJ. A Novel Carotenoid-Producing Bacterium, Paenibacillus aurantius sp. nov., Isolated from Korean Marine Environment. Microorganisms 2023; 11:2719. [PMID: 38004730 PMCID: PMC10673419 DOI: 10.3390/microorganisms11112719] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 10/24/2023] [Accepted: 11/05/2023] [Indexed: 11/26/2023] Open
Abstract
The novel bacterial strain MBLB1776T was isolated from marine mud in Uljin, the Republic of Korea. Cells were Gram-positive, spore-forming, non-motile, and non-flagellated rods. Growth was observed at a temperature range of 10-45 °C, pH range of 6.0-8.0, and NaCl concentrations of 0-4% (w/v). Phylogenetic analysis of the 16S rRNA gene sequence revealed that MBLB1776T belonged to the genus Paenibacillus and was closely related to Paenibacillus cavernae C4-5T (94.83% similarity). Anteiso-C15:0, iso-C16:0, C16:0, and iso-C15:0 were the predominant fatty acids. Menaquinone 7 was identified as the major isoprenoid quinone. The major polar lipids included diphosphatidylglycerol, phosphatidylglycerol, and phosphatidylethanolamine. Its whole genome was 6.3 Mb in size, with a G+C content of 55.8 mol%. Average nucleotide identity and in silico DNA-DNA hybridization values were below the species delineation threshold. Gene function analysis revealed the presence of a complete C30 carotenoid biosynthetic pathway. Intriguingly, MBLB1776T harbored carotenoid pigments, imparting an orange color to whole cells. Based on this comprehensive polyphasic taxonomy, the MBLB1776T strain represents a novel species within the genus Paenibacillus, for which the name Paenibacillus aurantius sp. nov is proposed. The type strain was MBLB1776T (=KCTC 43279T = JCM 34220T). This is the first report of a carotenoid-producing Paenibacillus sp.
Collapse
Affiliation(s)
- Chi Young Hwang
- Department of Bioengineering and Nano-Bioengineering, Incheon National University, Incheon 22012, Republic of Korea; (C.Y.H.); (E.-S.C.)
| | - Sung Man Seo
- Advanced Geo-Materials Research Department, Pohang Branch, Korea Institute of Geoscience and Mineral Resources, Pohang 37559, Republic of Korea;
| | - Eui-Sang Cho
- Department of Bioengineering and Nano-Bioengineering, Incheon National University, Incheon 22012, Republic of Korea; (C.Y.H.); (E.-S.C.)
| | - Young-Do Nam
- Personalized Diet Research Group, Korea Food Research Institute, Wanju 55365, Republic of Korea; (Y.-D.N.); (S.-L.P.)
| | - So-Lim Park
- Personalized Diet Research Group, Korea Food Research Institute, Wanju 55365, Republic of Korea; (Y.-D.N.); (S.-L.P.)
| | - Seong-Il Lim
- Personalized Diet Research Group, Korea Food Research Institute, Wanju 55365, Republic of Korea; (Y.-D.N.); (S.-L.P.)
| | - Myung-Ji Seo
- Department of Bioengineering and Nano-Bioengineering, Incheon National University, Incheon 22012, Republic of Korea; (C.Y.H.); (E.-S.C.)
- Division of Bioengineering, Incheon National University, Incheon 22012, Republic of Korea
- Research Center for Bio Materials & Process Development, Incheon National University, Incheon 22012, Republic of Korea
| |
Collapse
|
2
|
Yoon DJ, Cho ES, Hwang CY, Nam YD, Park SL, Lim SI, Seo MJ. Nocardioides luti sp. nov., belonging to the family Nocardioidaceae isolated from kaolinite, exhibiting the biosynthesis potential of alkylresorcinol. Antonie Van Leeuwenhoek 2021; 114:983-995. [PMID: 33864547 DOI: 10.1007/s10482-021-01570-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 04/01/2021] [Indexed: 11/26/2022]
Abstract
A novel Gram-staining-positive, short rod-shaped, non-motile, and non-pigmented actinobacterial strain (KIGAM211T) was isolated from kaolinite, a soft white clay mineral, collected from Sancheong in the Republic of Korea. On the basis of 16S rRNA gene sequence analysis, strain KIGAM211T was determined to belong to the genus Nocardioides and was most closely related to N. ungokensis UKS-03T (97.5% similarity). Cells could grow between 4 and 35 °C (optimum 30 °C), 0-3% (w/v) NaCl concentration (optimum 0%) and pH 5.5-8.5 (optimum 7.0) on R2A agar. Morphological appearance of colonies was cream-white, arranged singly or in groups. Biochemical characterization of strain KAGAM211T indicated that it could hydrolyze casein, gelatin, Tweens 40 and tyrosine. Furthermore, the strain was positive for both oxidase and catalase activity. Strain KIGAM211T was characterized chemotaxonomically by MK-8 (H4) as the predominant menaquinone and phosphatidylglycerol (PG) and phosphatidylinositol (PI) as the major polar lipids. Major fatty acids were iso-C16:0 and C18:1 ω9c. The Ortholog average nucleotide identity (OrthoANI) and in silico DNA-DNA hybridization (isDDH) values between strain KIGAM211T and its most closely related strains of the Nocardioides genus were < 82% and < 24%, respectively, suggesting that strain KIGAM211T represent a novel species. The whole genome size of KIGAM211T was 4.52 Mb, comprising a total of 4,294 genes with DNA G + C content of 72.3 mol%. The genome of strain KIGAM211T also comprises the biosynthetic gene cluster for alkylresorcinol as secondary metabolite. The results of physiological, taxonomical, phylogenetic, and whole genome analyses allowed for differentiation of strain KIGAM211T from the recognized Nocardioides species. Therefore, strain KIGAM211T is considered to represent a novel species, for which the name Nocardioides luti sp. nov. (type strain KIGAM211T = KCTC 49364T = JCM 33859T) is proposed.
Collapse
Affiliation(s)
- Deok Jun Yoon
- Department of Bioengineering and Nano-Bioengineering, Graduate School of Incheon National University, Incheon, 22012, Republic of Korea
| | - Eui-Sang Cho
- Department of Bioengineering and Nano-Bioengineering, Graduate School of Incheon National University, Incheon, 22012, Republic of Korea
| | - Chi Young Hwang
- Department of Bioengineering and Nano-Bioengineering, Graduate School of Incheon National University, Incheon, 22012, Republic of Korea
| | - Young-Do Nam
- Research Group of Healthcare, Korea Food Research Institute, Wanju, 55365, Republic of Korea
| | - So-Lim Park
- Research Group of Healthcare, Korea Food Research Institute, Wanju, 55365, Republic of Korea
| | - Seong-Il Lim
- Research Group of Healthcare, Korea Food Research Institute, Wanju, 55365, Republic of Korea.
| | - Myung-Ji Seo
- Department of Bioengineering and Nano-Bioengineering, Graduate School of Incheon National University, Incheon, 22012, Republic of Korea.
- Division of Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea.
- Institute for New Drug Development, Incheon National University, Incheon, 22012, Republic of Korea.
| |
Collapse
|
3
|
Song EJ, Lee ES, Park SL, Choi HJ, Roh SW, Nam YD. Bacterial community analysis in three types of the fermented seafood, jeotgal, produced in South Korea. Biosci Biotechnol Biochem 2018; 82:1444-1454. [DOI: 10.1080/09168451.2018.1469395] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
ABSTRACT
Jeotgal is a traditional Korean seafood fermented by indigenous microbes. The bacterial community in five myeolchi-jeot (Engraulis japonica), five meongge-jeot (Halocynthia roretzi), and six saeu-jeot (Acetes japonicas) produced in South Korea was analyzed by barcoded pyrosequencing targeting the V1/V2 hyper-variable regions of the 16S rRNA gene. All samples were dominated by the phyla Firmicutes, which represented 67.7% (SD = 27.2%) of the population. Tetragenococcus halophilus and Tetragenococcus muriaticus were the predominant species in myeolchi-jeot. The LABs, Lactobacillus sakei, Lactobacillus curvatus, and Weissella koreensis were the predominant species in meongge-jeot. In myeolchi-jeot and meongge-jeot, the bacterial communities within samples were consistent in their predominance, however each of saeu-jeot samples had inter-individual variety in the bacterial community leading to the difficulties of standardization for the commercial production of saeu-jeot. The results of this study will conclusively help to expand our basic knowledge of jeotgal and the related microorganisms involved in food fermentation.
Collapse
Affiliation(s)
- Eun-Ji Song
- Research Group of Gut Microbiome, Korea Food Research Institute , Wanju, Republic of Korea
- Department of Food Biotechnology, Korea University of Science and Technology , Daejeon, Republic of Korea
| | - Eun-Sook Lee
- Research Group of Gut Microbiome, Korea Food Research Institute , Wanju, Republic of Korea
| | - So-Lim Park
- Research Group of Gut Microbiome, Korea Food Research Institute , Wanju, Republic of Korea
| | - Hak-Jong Choi
- Microbiology and Functionality Research Group, World Institute of Kimchi , Gwangju, Republic of Korea
| | - Seong Woon Roh
- Microbiology and Functionality Research Group, World Institute of Kimchi , Gwangju, Republic of Korea
| | - Young-Do Nam
- Research Group of Gut Microbiome, Korea Food Research Institute , Wanju, Republic of Korea
- Department of Food Biotechnology, Korea University of Science and Technology , Daejeon, Republic of Korea
| |
Collapse
|
4
|
Lee ES, Song EJ, Lee SY, Park SL, Kim D, Kim D, Kim JH, Lim SI, Nam YD. Effects of bentonite Bgp35b-p on the gut microbiota of mice fed a high-fat diet. J Sci Food Agric 2018; 98:4369-4373. [PMID: 29412464 DOI: 10.1002/jsfa.8934] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 01/28/2018] [Accepted: 01/29/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Bentonite is a natural clay mineral with health-promoting effects due to its high adsorption abilities with high cation-exchange capacity. Previously, we found an anti-obesity effect for Bgp35b-p bentonite produced in South Korea, where its high adsorbent ability of dietary lipids possibly partially removed the lipidic environment in the gut (unpublished). It is hypothesized that Bgp35b-p affects the intestinal microbial community, and thus the microbial changes were investigated via next-generation sequencing targeting the bacterial 16S rRNA gene and bioinformatics using QIIME (Quantitative Insights Into Microbial Ecology) were performed on feces of C57BL/6 male mice fed a high-fat diet (HFD) with the Bgp35b-p. RESULTS The HFD caused microbial dysbiosis, characterized by a decrease in the relative abundance of Bacteroidetes and an increase in abundance of Firmicutes and Proteobacteria. It was found that HFD + Bgp35b-p led to significant changes in the microbial compositions of family-level bacteria known as short-chain fatty-acid-producing bacteria. The relative abundance of Ruminococcaceae was significantly increased, and the abundances of Clostridiaceae and Lachnospiraceae were decreased by HFD + Bgp35b-p, shifting close to that in mice fed a normal diet. CONCLUSION Bgp35b-p induced compositional changes in intestinal microbiota, which can be considered as a prebiotic effect, thus suggesting that bentonite may be a potential prebiotic functional supplement. © 2018 Society of Chemical Industry.
Collapse
Affiliation(s)
- Eun-Sook Lee
- Research Group of Gut Microbiome, Korea Food Research Institute, Wanju, Republic of Korea
| | - Eun-Ji Song
- Research Group of Gut Microbiome, Korea Food Research Institute, Wanju, Republic of Korea
- Department of Food Biotechnology, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - So-Young Lee
- Research Group of Gut Microbiome, Korea Food Research Institute, Wanju, Republic of Korea
- Department of Food Biotechnology, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - So-Lim Park
- Research Group of Gut Microbiome, Korea Food Research Institute, Wanju, Republic of Korea
| | - Daeyoung Kim
- Advanced Geo-materials R&D Department, Pohang Branch, Korea Institute of Geoscience and Mineral Resources, Pohang, Republic of Korea
- Department of Nanomaterials Science and Engineering, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - Daniel Kim
- Advanced Geo-materials R&D Department, Pohang Branch, Korea Institute of Geoscience and Mineral Resources, Pohang, Republic of Korea
| | - Jae-Hwan Kim
- Advanced Geo-materials R&D Department, Pohang Branch, Korea Institute of Geoscience and Mineral Resources, Pohang, Republic of Korea
| | - Seong-Il Lim
- Research Group of Gut Microbiome, Korea Food Research Institute, Wanju, Republic of Korea
| | - Young-Do Nam
- Research Group of Gut Microbiome, Korea Food Research Institute, Wanju, Republic of Korea
- Department of Food Biotechnology, Korea University of Science and Technology, Daejeon, Republic of Korea
| |
Collapse
|
5
|
Kim S, Park SL, Lee S, Lee SY, Ko S, Yoo M. UPLC/ESI-MS/MS analysis of compositional changes for organosulfur compounds in garlic (Allium sativum L.) during fermentation. Food Chem 2016; 211:555-9. [PMID: 27283666 DOI: 10.1016/j.foodchem.2016.05.102] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 02/05/2016] [Accepted: 05/16/2016] [Indexed: 10/21/2022]
Abstract
In this study, we used liquid chromatography coupled to ion trap mass spectrometry (MS) for the quantification of 11 organosulfur compounds and analysis of their compositional changes in garlic during fermentation using 3 different microbe strains. The calibration curves of all 11 analytes exhibited good linearity (R⩾0.995), and the mean recoveries measured at three concentrations were greater than 81.63% with relative standard deviations of less than 12.79%. Investigation of the compositional changes revealed that the γ-glutamyl peptides content in fermented blanched garlic reduced, whereas the content of the compounds in biosynthesis of S-allyl-l-cysteines from γ-glutamyl peptides increased significantly. Our results also indicated that starter cultures can be used selectively in the production of fermented garlic to increase the amounts of the desired organosulfur compounds.
Collapse
Affiliation(s)
- Sunyoung Kim
- Food Analysis Center, Korea Food Research Institute, 516 Backhyun-dong, Bundang-gu, Sungnam-si, Gyeonggi-Do 463-746, Republic of Korea
| | - So-Lim Park
- Research Group of Gut Microbiome, Korea Food Research Institute, 516 Backhyun-dong, Bundang-gu, Sungnam-si, Gyeonggi-Do 463-746, Republic of Korea
| | - Sanghee Lee
- Food Analysis Center, Korea Food Research Institute, 516 Backhyun-dong, Bundang-gu, Sungnam-si, Gyeonggi-Do 463-746, Republic of Korea
| | - So-Young Lee
- Research Group of Gut Microbiome, Korea Food Research Institute, 516 Backhyun-dong, Bundang-gu, Sungnam-si, Gyeonggi-Do 463-746, Republic of Korea; University of science and technology (UST), Daejeon 305-350, Republic of Korea
| | - Sungho Ko
- Department of Biotechnology, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam, Gyeonggi-Do 13488, Republic of Korea
| | - Miyoung Yoo
- Food Analysis Center, Korea Food Research Institute, 516 Backhyun-dong, Bundang-gu, Sungnam-si, Gyeonggi-Do 463-746, Republic of Korea.
| |
Collapse
|
6
|
Abstract
This study identified metabolites of capsaicin bioconverted by Aspergillus oryzae, which is generally used for mass production of gochujang prepared by fermenting red pepper powder in Korea. A. oryzae was incubated with capsaicin in potato dextrose broth. Capsaicin decreased depending on the incubation period, but new metabolites increased. Five capsaicin metabolites purified from the ethyl acetate fraction of the capsaicin culture were identified as N-vanillylcarbamoylbutyric acid, N-vanillyl-9-hydroxy-8-methyloctanamide, ω-hydroxycapsaicin, 8-methyl-N-vanillylcarbamoyl-6(E)-octenoic acid, and 2-methyl-N-vanillylcarbamoyl-6(Z)-octenoic acid by nuclear magnetic resonance (NMR) and mass spectrometry (MS). The capsaicin metabolites in gochujang were confirmed and quantitated by selective multiple reaction monitoring detection after liquid chromatography electrospray ionization MS using the isolated compounds as external standards. On the basis of the structures of the capsaicin metabolites, it is proposed that capsaicin metabolites were converted by A. oryzae by ω-hydroxylation, alcohol oxidation, hydrogenation, isomerization, and α- and/or β-oxidation.
Collapse
Affiliation(s)
| | | | | | | | - Seong-Il Lim
- §Division of Nutrition and Metabolism Research, Korea Food Research Institute, Baekhyun-Dong, Bundang-Ku, Sungnam-Si, Gyeonggi-Do 463-746, Republic of Korea
| | - So-Lim Park
- §Division of Nutrition and Metabolism Research, Korea Food Research Institute, Baekhyun-Dong, Bundang-Ku, Sungnam-Si, Gyeonggi-Do 463-746, Republic of Korea
| | | |
Collapse
|
7
|
Park SL, Lee SY, Nam YD, Yi SH, Seo MJ, Lim SI. Hepatoprotective effect of fermented rice bran against carbon tetrachloride-induced toxicity in mice. Food Sci Biotechnol 2013. [DOI: 10.1007/s10068-014-0022-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
|
8
|
Seo MJ, Lee JY, Nam YD, Lee SY, Park SL, Yi SH, Lee MH, Roh SW, Choi HJ, Lim SI. Production of γ-Aminobutyric Acid by Lactobacillus brevis 340G Isolated from Kimchi and Its Application to Skim Milk. ACTA ACUST UNITED AC 2013. [DOI: 10.13050/foodengprog.2013.17.4.418] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
9
|
Nguyen PH, Yang JL, Uddin MN, Park SL, Lim SI, Jung DW, Williams DR, Oh WK. Protein tyrosine phosphatase 1B (PTP1B) inhibitors from Morinda citrifolia (Noni) and their insulin mimetic activity. J Nat Prod 2013; 76:2080-2087. [PMID: 24224843 DOI: 10.1021/np400533h] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
As part of our ongoing search for new antidiabetic agents from medicinal plants, we found that a methanol extract of Morinda citrifolia showed potential stimulatory effects on glucose uptake in 3T3-L1 adipocyte cells. Bioassay-guided fractionation of this active extract yielded two new lignans (1 and 2) and three new neolignans (9, 10, and 14), as well as 10 known compounds (3-8, 11-13, and 15). The absolute configurations of compounds 9, 10, and 14 were determined by ECD spectra analysis. Compounds 3, 6, 7, and 15 showed inhibitory effects on PTP1B enzyme with IC50 values of 21.86 ± 0.48, 15.01 ± 0.20, 16.82 ± 0.42, and 4.12 ± 0.09 μM, respectively. Furthermore, compounds 3, 6, 7, and 15 showed strong stimulatory effects on 2-NBDG uptake in 3T3-L1 adipocyte cells. This study indicated the potential of compounds 3, 6, 7, and 15 as lead molecules for antidiabetic agents.
Collapse
Affiliation(s)
- Phi-Hung Nguyen
- College of Pharmacy, Chosun University , Gwangju 501-759, Republic of Korea
| | | | | | | | | | | | | | | |
Collapse
|
10
|
|
11
|
Park SL, Park S, Jang J, Yang HJ, Moon SW, Lee MK. Edible Culture Media from Cereals and Soybeans for Pre-cultivation of Lactic Acid Bacteria. ACTA ACUST UNITED AC 2013. [DOI: 10.3746/jkfn.2013.42.6.991] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
12
|
Jung YS, Kim MY, Lee HS, Park SL, Lee KJ. Effect of DA-9701, a novel prokinetic agent, on stress-induced delayed gastric emptying and hormonal changes in rats. Neurogastroenterol Motil 2013; 25:254-9, e166. [PMID: 23216854 DOI: 10.1111/nmo.12053] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND DA-9701 is a novel prokinetic agent formulated with Pharbitis Semen and Corydalis Tuber. This study aimed to evaluate the effect of DA-9701 on stress-induced delay in gastric emptying and changes in plasma adrenocorticotropic hormone and ghrelin levels in rats. METHODS Changes in gastric emptying in response to different durations of stress were evaluated. Gastric emptying was compared between the following groups: (i) nonstressed vehicle- or DA-9701-treated group, (ii) nonstressed vehicle- or mosapride-treated group, (iii) 2-h stressed vehicle- or DA-9701-treated group, and (iv) 2-h stressed vehicle- or mosapride-treated group. Water immersion restraint stress was used as the stressor. DA-9701 or mosapride at 3 mg kg(-1) was administered to the rats after subjecting them to 2-h stress, and then gastric emptying was measured using the phenol red method. KEY RESULTS Gastric emptying was significantly delayed in the 2-h stressed group compared with the nonstressed group. Mosapride administration resulted in significant recovery from the stress-induced delay in gastric emptying. Gastric emptying in the rats that underwent 2-h stress followed by DA-9701 administration was not significantly different from that in the nonstressed group. The plasma adrenocorticotropic hormone and active ghrelin levels in the 2-h stressed group were significantly higher than those in the nonstressed group. These increases were significantly inhibited by DA-9701. CONCLUSIONS & INFERENCES The administration of DA-9701 improved delayed gastric emptying and inhibited the hormonal changes induced by stress, suggesting that DA-9701 can be used as a gastroprokinetic agent for the treatment of delayed gastric emptying, particularly that associated with stress.
Collapse
Affiliation(s)
- Y-S Jung
- College of Pharmacy, Ajou University, Suwon, Korea
| | | | | | | | | |
Collapse
|
13
|
Seo MJ, Nam YD, Lee SY, Park SL, Yi SH, Lim SI. Isolation of the putative biosynthetic gene cluster of 1-deoxynojirimycin by Bacillus amyloliquefaciens 140N, its production and application to the fermentation of soybean paste. Biosci Biotechnol Biochem 2013; 77:398-401. [PMID: 23391926 DOI: 10.1271/bbb.120753] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The 1-deoxynojirimycin (DNJ) biosynthetic gene cluster of Bacillus amyloliquefaciens 140N isolated from traditional Korean fermented food was isolated by PCR screening. It showed 78.9% inhibitory activity against α-glucosidase and produced 0.8 g/L of DNJ in an optimized medium containing 2% soluble starch, 1% tryptone, 0.05% KH(2)PO(4), and 0.05% (NH(2))(4)SO(4). Soybean paste fermented with B. amyloliquefaciens 140N produced DNJ with 84.4% inhibitory activity.
Collapse
Affiliation(s)
- Myung-Ji Seo
- Division of Bioengineering, University of Incheon, Incheon, Republic of Korea
| | | | | | | | | | | |
Collapse
|
14
|
Lee SY, Kim IS, Park SL, Lim SI, Choi HS, Choi SY. Antidiabetic Activity and Enzymatic Activity of Commercial Doenjang Certified for Traditional Foods. ACTA ACUST UNITED AC 2012. [DOI: 10.7841/ksbbj.2012.27.6.361] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
15
|
Lee SY, Park SL, Yi SH, Nam YD, Lim SI. Quality Characteristics of Low-Salt Gochujang Added with Glycyrrhiza uralensis and Brassica juncea. Prev Nutr Food Sci 2011. [DOI: 10.3746/jfn.2011.16.4.348] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
|
16
|
Shin EJ, Park SL, Jeon SJ, Lee JW, Kim YT, Kim YH, Nam SW. Effect of molecular chaperones on the soluble expression of alginate lyase inE. coli. BIOTECHNOL BIOPROC E 2006. [DOI: 10.1007/bf02932308] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
17
|
Abstract
Epidermotropic metastatic squamous cell carcinoma produced full-thickness cellular atypia of bowenoid carcinoma in situ or vulvar intraepithelial neoplasia, grade 3 (VIN 3), in a 73-year-old woman who had past history of uterine cervical carcinoma. The presence of intravascular tumor cell nests and areas showing smooth continuity of the malignant squamous cell nodules with the adjoining benign epidermis supported the possibility of the epidermotropic metastasis. To our knowledge, metastatic epidermotropic squamous carcinoma clinicopathologically simulating primary Bowen's disease has not been reported.
Collapse
Affiliation(s)
- C W Ihm
- Department of Dermatology, Chonbuk University Medical School, Chonju, Republic of Korea
| | | | | | | |
Collapse
|
18
|
Bagwell PF, Park SL, Yen A, Antoniadis DA, Smith HI, Orlando TP, Kastner MA. Magnetotransport in multiple narrow silicon inversion channels opened electrostatically into a two-dimensional electron gas. Phys Rev B Condens Matter 1992; 45:9214-9221. [PMID: 10000787 DOI: 10.1103/physrevb.45.9214] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
19
|
Kastner MA, Field SB, Licini JC, Park SL. Anomalous magnetoresistance of the electron gas in a restricted geometry. Phys Rev Lett 1988; 60:2535-2538. [PMID: 10038379 DOI: 10.1103/physrevlett.60.2535] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
20
|
Abstract
Inducible malic enzyme (l-malate:NAD oxidoreductase [decarboxylating], EC 1.1.1.39) was isolated from Lactobacillus plantarum and purified about 100-fold with 27% yield of the original activity. Kinetic studies with the purified malic enzyme yielded the following results: pH optimum, 7.6 to 8.0; K(m) for l-malate, 0.38 mM; K(m) for NAD, 0.072 mM; and K(m) for MnCl(2), 0.048 mM. It was shown that this enzyme was inhibited by high concentrations of substrate and nicotinamide adenine dinucleotide (NAD), indicating it may be regulated by substrate or NAD. Molecular weight of 130,000 +/- 10,000 was determined by Sephadex gel filtration and sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The isoelectric point, determined by isoelectrofocusing, was 4.3 at 7 C. Isoelectrofocusing also resolved three active peaks which focused at pH 4.19, 4.31, and 4.40.
Collapse
|