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Cheng YY, Park TH, Seong H, Kim TJ, Han NS. Biological characterization of D-lactate dehydrogenase responsible for high-yield production of D-phenyllactic acid in Sporolactobacillus inulinus. Microb Biotechnol 2022; 15:2717-2729. [PMID: 35921426 PMCID: PMC9618312 DOI: 10.1111/1751-7915.14125] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/12/2022] [Accepted: 07/21/2022] [Indexed: 01/05/2023] Open
Abstract
PLA (3‐D‐phenyllactic acid) is an ideal antimicrobial and immune regulatory compound present in honey and fermented foods. Sporolactobacillus inulinus is regarded as a potent D‐PLA producer that reduces phenylpyruvate (PPA) with D‐lactate dehydrogenases. In this study, PLA was produced by whole‐cell bioconversion of S. inulinus ATCC 15538. Three genes encoding D‐lactate dehydrogenase (d‐ldh1, d‐ldh2, and d‐ldh3) were cloned and expressed in Escherichia coli BL21 (DE3), and their biochemical and structural properties were characterized. Consequently, a high concentration of pure D‐PLA (47 mM) was produced with a high conversion yield of 88%. Among the three enzymes, D‐LDH1 was responsible for the efficient conversion of PPA to PLA with kinetic parameters of Km (0.36 mM), kcat (481.10 s−1), and kcat/Km (1336.39 mM−1 s−1). In silico structural analysis and site‐directed mutagenesis revealed that the Ile307 in D‐LDH1 is a key residue for excellent PPA reduction with low steric hindrance at the substrate entrance. This study highlights that S. inulinus ATCC 15538 is an excellent PLA producer, equipped with a highly specific and efficient D‐LDH1 enzyme.
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Affiliation(s)
- Ya-Yun Cheng
- Brain Korea 21 Center for Bio-Health Industry, Development, Division of Animal, Horticultural, and Food Sciences, Chungbuk National University, Cheongju, Korea
| | - Tae Hyeon Park
- Brain Korea 21 Center for Bio-Health Industry, Development, Division of Animal, Horticultural, and Food Sciences, Chungbuk National University, Cheongju, Korea
| | - Hyunbin Seong
- Brain Korea 21 Center for Bio-Health Industry, Development, Division of Animal, Horticultural, and Food Sciences, Chungbuk National University, Cheongju, Korea
| | - Tae-Jip Kim
- Brain Korea 21 Center for Bio-Health Industry, Development, Division of Animal, Horticultural, and Food Sciences, Chungbuk National University, Cheongju, Korea
| | - Nam Soo Han
- Brain Korea 21 Center for Bio-Health Industry, Development, Division of Animal, Horticultural, and Food Sciences, Chungbuk National University, Cheongju, Korea
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Lactic Acid Bacteria in Raw-Milk Cheeses: From Starter Cultures to Probiotic Functions. Foods 2022; 11:foods11152276. [PMID: 35954043 PMCID: PMC9368153 DOI: 10.3390/foods11152276] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 07/15/2022] [Accepted: 07/25/2022] [Indexed: 12/04/2022] Open
Abstract
Traditional cheeses produced from raw milk exhibit a complex microbiota, characterized by a sequence of different microorganisms from milk coagulation and throughout maturation. Lactic acid bacteria (LAB) play an essential role in traditional cheese making, either as starter cultures that cause the rapid acidification of milk or as secondary microbiota that play an important role during cheese ripening. The enzymes produced by such dynamic LAB communities in raw milk are crucial, since they support proteolysis and lipolysis as chief drivers of flavor and texture of cheese. Recently, several LAB species have been characterized and used as probiotics that successfully promote human health. This review highlights the latest trends encompassing LAB acting in traditional raw milk cheeses (from cow, sheep, and goat milk), and their potential as probiotics and producers of bioactive compounds with health-promoting effects.
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Wang DH, Wang Z, Brenna JT. Gas Chromatography Chemical Ionization Mass Spectrometry and Tandem Mass Spectrometry for Identification and Straightforward Quantification of Branched Chain Fatty Acids in Foods. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:4973-4980. [PMID: 32298092 DOI: 10.1021/acs.jafc.0c01075] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Fatty acid analysis of food lipids containing branched chain fatty acids (BCFAs) are complex because of unavoidable gas chromatography (GC) co-elution. We demonstrate a method for convenient quantitative GC coupled to novel solvent-mediated chemical ionization (CI) mass spectrometry (MS) that enables resolution of co-eluting peaks by mass. The relevant masses yield uniform responses for C14-20 normal fatty acids and BCFAs, eliminating the need for rare purified BCFA standards essential for unpredictable responses, as for electron ionization (EI). CI-tandem mass spectrometry analysis of MH+ yields fragments characteristic of the branch position. Application of the measurement to BCFAs in salami samples demonstrates consistent results for the novel method and EI-MS. A higher proportion of C17-18 BCFAs was found in beef compared to milkfat, possibly indicative of fatty acid elongation, endogenous in the beef animal. This method enables straightforward structure elucidation and quantification of food BCFAs and similar chain length normal fatty acids without purified standards.
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Affiliation(s)
- Dong Hao Wang
- Dell Pediatric Research Institute, Departments of Pediatrics, Chemistry, and Nutrition, University of Texas at Austin, 1400 Barbara Jordan Boulevard, Austin, Texas 78723, United States
- Department of Food Science, Cornell University, Ithaca, New York 14853, United States
| | - Zhen Wang
- Dell Pediatric Research Institute, Departments of Pediatrics, Chemistry, and Nutrition, University of Texas at Austin, 1400 Barbara Jordan Boulevard, Austin, Texas 78723, United States
- Department of Food Science, Cornell University, Ithaca, New York 14853, United States
| | - J Thomas Brenna
- Dell Pediatric Research Institute, Departments of Pediatrics, Chemistry, and Nutrition, University of Texas at Austin, 1400 Barbara Jordan Boulevard, Austin, Texas 78723, United States
- Department of Food Science, Cornell University, Ithaca, New York 14853, United States
- Division of Nutritional Sciences, Cornell University, Ithaca, New York 14853, United States
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Sun W, Luo Y, Wang DH, Kothapalli KSD, Brenna JT. Branched chain fatty acid composition of yak milk and manure during full-lactation and half-lactation. Prostaglandins Leukot Essent Fatty Acids 2019; 150:16-20. [PMID: 31521006 DOI: 10.1016/j.plefa.2019.09.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 07/15/2019] [Accepted: 09/04/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND Branched chain fatty acids (BCFA) are bioactive food compounds and are well known to be essential components of human, cow and caprine milk. In Qinghai-Tibet plateau, yaks are domesticated in large numbers and their milk in addition to meat are commercially important to millions of Tibetans and Chinese. OBJECTIVE We tested the hypotheses that concentrations of BCFA in yak milk and manure differ between lactation periods and evaluated gene expression levels of certain genes involved in the biosynthesis and elongation of fatty acids. DESIGN Fresh milk and manure were collected from each yak and their fatty acid compositions compared with emphasis on BCFA. PARTICIPANTS/SETTING Yak milk and manure samples from the full lactation (October, 2015) and half lactation periods (March, 2016) were collected and BCFA levels were analyzed in detail by GC-FID and structures verified by GC-EI-MS/MS. Gene expression studies were carried out by semi-quantitative real time PCR method. STATISTICAL ANALYSES PERFORMED The difference between full lactation and half lactation was tested using student's t-test. Linear regression model was modelled in Excel and its significance was tested by ANOVA. Statistical significance was determined by performing student's t-test for gene expression studies. RESULTS BCFA ranged from 3-6% of total fatty acids in yak milk samples. The half-lactation yak milk contained higher levels of BCFA (5.29 ± 0.53) than the full-lactation milk (4.00 ± 0.46). The total BCFA in yak manure was found to be 14.67 ± 1.21, high in anteiso-15:0 and anteiso-17:0. ELOVL1 enzyme involved in the elongation of saturated C18 to C26 acyl-CoA substrates and MCAT enzyme involved in the transfer of a malonyl group to the mitochondrial acyl carrier protein are significantly upregulated in full-lactation milk. CONCLUSIONS BCFA in yak manure especially anteiso BCFA are positively correlated with yak milk from the same animal, indicating that these BCFA come from dietary sources. Yak milk delivers 777 mg BCFA compared to 158 mg per cup of whole U.S. dairy milk. QTP herders known to consume up to 2 kg of yak yogurt take in an estimated 3,500-5,000 mg BCFA per day. We conclude that BCFA intake for yak milk consumers is among the highest known in the world, higher when drawn from half lactating yaks.
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Affiliation(s)
- Wancheng Sun
- Animal Science Department, College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China; Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Yihao Luo
- Animal Science Department, College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China
| | - Dong Hao Wang
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Kumar S D Kothapalli
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA; Dell Pediatric Research Institute and Deptartment of Pediatrics, Dell Medical School, The University of Texas at Austin, 1400 Barbara Jordan Blvd, Austin, TX 78723, USA
| | - J Thomas Brenna
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA; Dell Pediatric Research Institute and Deptartment of Pediatrics, Dell Medical School, The University of Texas at Austin, 1400 Barbara Jordan Blvd, Austin, TX 78723, USA.
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Lan Q, Gan X, Tang H, Luo L, Chen J, Yang G, Huang J. Genome sequence and annotation of Sporolactobacillus pectinivorans GD201205 T, a lactic acid-producing bacterium. ANN MICROBIOL 2018. [DOI: 10.1007/s13213-018-1323-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Forsell J, Bengtsson-Palme J, Angelin M, Johansson A, Evengård B, Granlund M. The relation between Blastocystis and the intestinal microbiota in Swedish travellers. BMC Microbiol 2017; 17:231. [PMID: 29228901 PMCID: PMC5725903 DOI: 10.1186/s12866-017-1139-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 11/30/2017] [Indexed: 01/07/2023] Open
Abstract
Background Blastocystis sp. is a unicellular eukaryote that is commonly found in the human intestine. Its ability to cause disease is debated and a subject for ongoing research. In this study, faecal samples from 35 Swedish university students were examined through shotgun metagenomics before and after travel to the Indian peninsula or Central Africa. We aimed at assessing the impact of travel on Blastocystis carriage and seek associations between Blastocystis and the bacterial microbiota. Results We found a prevalence of Blastocystis of 16/35 (46%) before travel and 15/35 (43%) after travel. The two most commonly Blastocystis subtypes (STs) found were ST3 and ST4, accounting for 20 of the 31 samples positive for Blastocystis. No mixed subtype carriage was detected. All ten individuals with a typable ST before and after travel maintained their initial ST. The composition of the gut bacterial community was not significantly different between Blastocystis-carriers and non-carriers. Interestingly, the presence of Blastocystis was accompanied with higher abundances of the bacterial genera Sporolactobacillus and Candidatus Carsonella. Blastocystis carriage was positively associated with high bacterial genus richness, and negatively correlated to the Bacteroides-driven enterotype. These associations were both largely dependent on ST4 – a subtype commonly described from Europe – while the globally prevalent ST3 did not show such significant relationships. Conclusions The high rate of Blastocystis subtype persistence found during travel indicates that long-term carriage of Blastocystis is common. The associations between Blastocystis and the bacterial microbiota found in this study could imply a link between Blastocystis and a healthy microbiota as well as with diets high in vegetables. Whether the associations between Blastocystis and the microbiota are resulting from the presence of Blastocystis, or are a prerequisite for colonization with Blastocystis, are interesting questions for further studies. Electronic supplementary material The online version of this article (10.1186/s12866-017-1139-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Joakim Forsell
- Department of Clinical Microbiology, Umeå University, -901 87, Umeå, SE, Sweden.
| | - Johan Bengtsson-Palme
- Department of Infectious Diseases, Institute of Biomedicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Centre for Antibiotic Resistance Research (CARe), University of Gothenburg, Gothenburg, Sweden
| | - Martin Angelin
- Department of Clinical Microbiology, Infectious Diseases, Umeå University, Umeå, Sweden
| | - Anders Johansson
- Department of Clinical Microbiology, Bacteriology, and the Laboratory for Molecular Infection Medicine Sweden, Umeå University, Umeå, Sweden
| | - Birgitta Evengård
- Department of Clinical Microbiology, Infectious Diseases, Umeå University, Umeå, Sweden
| | - Margareta Granlund
- Department of Clinical Microbiology, Umeå University, -901 87, Umeå, SE, Sweden
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Dingess KA, Valentine CJ, Ollberding NJ, Davidson BS, Woo JG, Summer S, Peng YM, Guerrero ML, Ruiz-Palacios GM, Ran-Ressler RR, McMahon RJ, Brenna JT, Morrow AL. Branched-chain fatty acid composition of human milk and the impact of maternal diet: the Global Exploration of Human Milk (GEHM) Study. Am J Clin Nutr 2017; 105:177-184. [PMID: 27903517 PMCID: PMC5183722 DOI: 10.3945/ajcn.116.132464] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 10/12/2016] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND An understudied component of the diet, branched-chain fatty acids (BCFAs) are distinctive saturated fatty acids that may have an important influence on health. Human-milk fatty acid composition is known to differ worldwide, but comparative data are lacking on BCFAs. OBJECTIVE We tested the hypotheses that concentrations of BCFAs in human milk differ between populations and are associated with maternal diet. DESIGN We surveyed the BCFA composition of samples collected as part of a standardized, prospective study of human-milk composition. Mothers were enrolled from 3 urban populations with differing diets: Cincinnati, Ohio; Shanghai, China; and Mexico City, Mexico. Enrollment was limited to healthy mothers of term singleton infants. We undertook a cross-sectional analysis of milk from all women with samples at postpartum week 4 (n = 359; ∼120 women/site). Fatty acids were extracted from milk by using a modified Bligh-Dyer technique and analyzed by gas chromatography. Statistical analysis was performed by ANOVA and Tobit regression. For Cincinnati mothers, 24-h diet recalls were analyzed in relation to the individual BCFA concentrations measured in milk samples. RESULTS Total BCFAs in milk differed by site, with the highest concentration in Cincinnati followed by Mexico City and Shanghai (mean ± SE: 7.90 ± 0.41, 6.10 ± 0.36, and 4.27 ± 0.25 mg/100 mL, respectively; P < 0.001). Site differences persisted after delivery mode, maternal age, and body mass index were controlled for. The individual concentrations of iso-14:0, iso-16:0, iso-18:0, anteiso-15:0, and anteiso-17:0 also differed between sites. Milk concentrations of iso-14:0 and anteiso-15:0 were associated with maternal intake of dairy; iso-16:0 was associated with maternal intakes of dairy and beef. CONCLUSIONS BCFA concentrations in milk at 4 wk postpartum differed between mothers from Cincinnati, Shanghai, and Mexico City. Variations in human-milk BCFAs are influenced by diet. The impact of BCFAs on infant health warrants investigation.
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Affiliation(s)
- Kelly A Dingess
- The Perinatal Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH
| | - Christina J Valentine
- The Perinatal Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; .,Mead Johnson Nutrition Inc., Evansville, IN; Divisions of
| | | | - Barbara S Davidson
- The Perinatal Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH
| | | | - Suzanne Summer
- Clinical Translational Research Center, Cincinnati Children’s, Cincinnati, OH
| | | | - M Lourdes Guerrero
- National Institute of Medical Sciences and Nutrition, Mexico City, Mexico; and
| | | | | | | | | | - Ardythe L Morrow
- The Perinatal Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH
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Huang HY, Hsieh HY, King VAE, Chi LL, Tsen JH. To pre-challenge lactic acid bacteria with simulated gastrointestinal conditions is a suitable approach to studying potential probiotic properties. J Microbiol Methods 2014; 107:138-46. [DOI: 10.1016/j.mimet.2014.09.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 09/02/2014] [Accepted: 09/02/2014] [Indexed: 10/24/2022]
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Burns P, Lafferriere L, Vinderola G, Reinheimer J. Influence of dairy practices on the capacity of probiotic bacteria to overcome simulated gastric digestion. INT J DAIRY TECHNOL 2014. [DOI: 10.1111/1471-0307.12141] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Patricia Burns
- Instituto de Lactología Industrial (INLAIN, UNL-CONICET); Facultad de Ingeniería Química; Universidad Nacional del Litoral; Santiago del Estero 2829 Santa Fe 3000 Argentina
| | - Lisandro Lafferriere
- Instituto de Lactología Industrial (INLAIN, UNL-CONICET); Facultad de Ingeniería Química; Universidad Nacional del Litoral; Santiago del Estero 2829 Santa Fe 3000 Argentina
| | - Gabriel Vinderola
- Instituto de Lactología Industrial (INLAIN, UNL-CONICET); Facultad de Ingeniería Química; Universidad Nacional del Litoral; Santiago del Estero 2829 Santa Fe 3000 Argentina
| | - Jorge Reinheimer
- Instituto de Lactología Industrial (INLAIN, UNL-CONICET); Facultad de Ingeniería Química; Universidad Nacional del Litoral; Santiago del Estero 2829 Santa Fe 3000 Argentina
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Sabir F, Beyatli Y, Cokmus C, Onal-Darilmaz D. Assessment of potential probiotic properties of Lactobacillus spp., Lactococcus spp., and Pediococcus spp. strains isolated from kefir. J Food Sci 2011; 75:M568-73. [PMID: 21535612 DOI: 10.1111/j.1750-3841.2010.01855.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this study, the metabolic activities (in terms of quantities of the produced lactic acid, hydrogen peroxide, and exopolysaccharides) of 8 strains of Lactobacillus spp., Lactococcus spp., and Pediococcus spp., were determined. Lactic acid levels produced by strains were 8.1 to 17.4 mg/L. The L. acidophilus Z1L strain produced the maximum amount (3.18 μg/mL) of hydrogen peroxide. The exopolysaccharides (EPS) production by the strains was ranged between 173 and 378 mg/L. The susceptibility of 7 different antibiotics against these strains was also tested. All strains were found to be sensitive to ampicillin. The tolerance of the strains to low pH, their resistance to bile salts of strains, and their abilities to autoaggregate and coaggregate with Escherichia coli ATCC 11229 were also evaluated. High EPS-producing strains showed significant autoaggregation and coaggregation ability with test bacteria (P < 0.01). A correlation also was determined between EPS production and acid-bile tolerance (P < 0.05). EPS production possibly affects or is involved in acid-bile tolerance and aggregation of Lactobacillus spp., Lactococcus spp., and Pediococcus spp. strains and supports the potential of L. acidophilus Z1L strain as new probiotic.
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Affiliation(s)
- Firat Sabir
- Dept. of Biology, Faculty of Science, Ankara Univ., Ankara, Turkey
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Characterization of probiotic strains: An application as feed additives in poultry against Campylobacter jejuni. Int J Food Microbiol 2010; 141 Suppl 1:S98-108. [DOI: 10.1016/j.ijfoodmicro.2010.03.039] [Citation(s) in RCA: 140] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2009] [Revised: 03/26/2010] [Accepted: 03/29/2010] [Indexed: 11/19/2022]
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Ran-Ressler RR, Devapatla S, Lawrence P, Brenna JT. Branched chain fatty acids are constituents of the normal healthy newborn gastrointestinal tract. Pediatr Res 2008; 64:605-9. [PMID: 18614964 PMCID: PMC2662770 DOI: 10.1203/pdr.0b013e318184d2e6] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Vernix suspended in amniotic fluid is normally swallowed by the late term fetus. We hypothesized that branched chain fatty acids (BCFA), long known to be major vernix components, would be found in meconium and that the profiles would differ systematically. Vernix and meconium were collected from term newborns and analyzed. BCFA-containing lipids constituted about 12% of vernix dry weight, and were predominantly saturated, and had 11-26 carbons per BCFA. In contrast, meconium BCFA had 16-26 carbons, and were about 1% of dry weight. Meconium BCFA were mostly in the iso-configuration, whereas vernix BCFA contained dimethyl and middle chain branching, and five anteiso-BCFA. The mass of BCFA entering the fetal gut as swallowed vernix particles is estimated to be 180 mg in the last month of gestation whereas the total mass of BCFA found in meconium is estimated to be 16 mg, thus most BCFA disappear from the fetal gut. The BCFA profiles of vernix and meconium show that BCFA are major components of normal healthy term newborn gastrointestinal tract. BCFA are candidates for agents that play a role in gut colonization and should be considered a nutritional component for the fetus/newborn.
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Affiliation(s)
- Rinat R Ran-Ressler
- Division of Nutritional Sciences, Cornell University, Ithaca, New York 14853, USA
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Chang YH, Jung MY, Park IS, Oh HM. Sporolactobacillus vineae sp. nov., a spore-forming lactic acid bacterium isolated from vineyard soil. Int J Syst Evol Microbiol 2008; 58:2316-20. [PMID: 18842848 DOI: 10.1099/ijs.0.65608-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Two spore-forming, facultatively anaerobic, lactic acid bacteria, strains SL153(T) and SL1153, were isolated from vineyard soil in Korea. Cells of both strains were slightly curved, Gram-positive, motile rods that measured between 1 and 4 mum in length and were approximately 0.5 mum in diameter. Strains SL153(T) and SL1153 fermented glucose, fructose, mannose and sorbitol, but were negative for nitrate reduction, catalase and oxidase. The predominant cellular fatty acids of the two isolates were iso-C(15 : 0), anteiso-C(15 : 0) and anteiso-C(17 : 0). meso-Diaminopimelic acid, glucose, mannose and galactose were determined in their whole-cell hydrolysates. 16S rRNA gene sequences from the two strains were almost identical (99.9 %) and they could be placed in the genus Sporolactobacillus according to phylogenetic analysis. The species most closely related to SL153(T) were Sporolactobacillus inulinus and Sporolactobacillus terrae with 16S rRNA gene similarities of 95.7 and 95.5 %, respectively, with the type strains. Levels of DNA-DNA relatedness between strain SL153(T) and the type strains of S. inulinus, S. terrae and Sporolactobacillus kofuensis were 18.5, 18.0 and 17.0 %, respectively. On the basis of the phylogenetic (16S rRNA gene), chemotaxonomic and phenotypic evidence given in this study, it is proposed that strains SL153(T) and SL1153 should be assigned to the genus Sporolactobacillus as representatives of the novel species Sporolactobacillus vineae sp. nov. The type strain is SL153(T) (=KCTC 5376(T)=JCM 14637(T)).
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Affiliation(s)
- Young-Hyo Chang
- KCTC, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, 52 Oeundong, Yuseong, Daejeon 305-806, Republic of Korea.
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