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1.
J Health Care Poor Underserved ; 34(3): 863-883, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38015127

RESUMEN

PURPOSE: To qualitatively examine barriers to patient portal use among low-income patients receiving health care services at a federally qualified health center (FQHC). METHODS: In-depth interviews were conducted with a volunteer sample of patients recruited from an FQHC. The interviews took 30-45 minutes. As participants arrived for each scheduled interview, written informed consent was obtained and participants completed a brief (5-10 minutes) self-administered survey. RESULTS: Participants (N =25) were primarily middle-aged (M = 53 years), Black (76%), and male (60%). Over 60% of patients had heard of MyChart, but only 40% were enrolled. Barriers to enrollment and use of MyChart were organized into individual, organizational, and structural levels. Providing low-literacy informational materials and enrollment assistance emerged as potential strategies for increasing MyChart use. CONCLUSION: Federally-qualified health centers serving low-income populations should enhance patient portal use by increasing awareness of the benefits of portals and assisting patients with enrollment.


Asunto(s)
Portales del Paciente , Persona de Mediana Edad , Humanos , Masculino , Pobreza , Instituciones de Salud , Consentimiento Informado , Pacientes
2.
Home Health Care Serv Q ; 42(2): 98-123, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36596311

RESUMEN

This integrative review identified challenges for interprofessional home care and provided recommendations for improving geriatric home care. A search of six databases identified 982 articles; 11 of them met the review's eligibility criteria and were included in the review. Quality appraisal of the included studies was performed using two tools (Critical Appraisal Skills Program for Qualitative Research and Mixed Methods Appraisal Tool), and their overall methodological quality was found to be satisfactory. After applying D'Amour et al.'s framework, four "challenge" themes emerged: (1) lack of sharing, (2) lack of partnership, (3) limited resources and interdependency, and (4) power issues. Recommendations included providing practical multidisciplinary training guided by a standardized model, establishing streamlined communication protocols and a communication platform reflecting the actual needs of users by involving them in its design, and asking interprofessional team members to commit to home care planning and to cultivate a collaborative culture and organizational support.


Asunto(s)
Relaciones Interprofesionales , Humanos , Anciano , Investigación Cualitativa
4.
J Palliat Care ; 36(4): 255-264, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-34182840

RESUMEN

BACKGROUND: Quality end-of-life care for cancer patients is a global health priority, and nurses are instrumental in providing this care. However, little is known about nurses' experiences and perceptions in end-of-life care settings in Korea. Aims: This scoping review examined Korean nurses' end-of-life care experiences and assessed the state of research in this area. METHODS: Systematic searches were conducted using 7 electronic databases (PubMed, CINAHL, Scopus, Embase, WPRIM, KCI, and RISS), and 17 studies were selected for review. FINDINGS: Most studies were limited to cross-sectional, descriptive designs. Outcomes regarding end-of-life care measured in the studies were categorized into cognitive variables, emotional variables, participation/performance, and educational needs. Study results suggested low nurse knowledge and self-efficacy with regard to provision of end-of-life care. Perceived barriers to quality end of life care included difficulties in meeting family members' needs. In addition, emotional outcomes associated with end-of-life care included high levels of nurse stress and burnout. Predictors of elevated stress included inability to provide adequate pain control, inability to reconcile patient requests with physician orders, and heavy workload. Although most nurses had end-of-life care experience, fewer than half reported receiving related education. The lack of knowledge and skill related to end of life care was a primary contributor to stress. CONCLUSIONS: Korean nurses providing end-of-life care for cancer patients need additional education and support to help them manage high stress levels. Further study is needed to identify strategies for meeting nurses' end-of-life care education needs and of improving their overall performance in such practice.


Asunto(s)
Neoplasias , Cuidado Terminal , Competencia Clínica , Estudios Transversales , Humanos , Neoplasias/terapia , Percepción , República de Corea
5.
Front Microbiol ; 12: 625562, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33763044

RESUMEN

Probiotics can modulate the composition of gut microbiota and benefit the host animal health in multiple ways. Lactic acid bacteria (LAB), mainly Lactobacillus and Bifidobacterium species, are well-known microbes with probiotic potential. In the present study, 88 microbial strains were isolated from canine feces and annotated. Among these, the four strains CACC517, 537, 558, and 566 were tested for probiotic characteristics, and their beneficial effects on hosts were evaluated both in vitro and in vivo; these strains exhibited antibiosis, antibiotic activity, acid and bile tolerance, and relative cell adhesion to the HT-29 monolayer cell line. Byproducts of these strains increased the viability and decreased oxidative stress in mouse and dog cell lines (RAW264.7 and DH82, respectively). Subsequently, when the probiotics were applied to the clinical trial, changes in microbial composition and relative abundance of bacterial strains were clearly observed in the experimental animals. Experimental groups before and after the application were obviously separated from PCA analysis of clinical results. Conclusively, these results could provide comprehensive understanding of the effects of probiotic strains (CACC517, 537, 558, and 566) and their industrial applications.

6.
Medicine (Baltimore) ; 100(13): e25276, 2021 Apr 02.
Artículo en Inglés | MEDLINE | ID: mdl-33787612

RESUMEN

ABSTRACT: Clinical information systems (CISs) that do not consider usability and safety could lead to harmful events. Therefore, we aimed to develop a safety and usability guideline of CISs that is comprehensive for both users and developers. And the guideline was categorized to apply actual clinical workflow and work environment.The guideline components were extracted through a systematic review of the articles published between 2000 and 2015, and existing CIS safety and/or usability design guidelines. The guideline components were categorized according to clinical workflow and types of user interface (UI). The contents of the guideline were evaluated and validated by experts with 3 specialties: medical informatics, patient safety, and human engineering.Total 1276 guideline components were extracted through article and guideline review. Of these, 464 guideline components were categorized according to 5 divisions of the clinical workflow: "Data identification and selection," "Document entry," "Order entry," "Clinical decision support and alert," and "Management". While 521 guideline components were categorized according to 4 divisions of UI: UIs related to information process steps, "Perception," "Recognition," "Control," and "Feedback". We developed a guideline draft with 219 detailed guidance for clinical task and 70 for UI. Overall appropriateness and comprehensiveness were proven to achieve more than 90% in experts' survey. However, there were significant differences among the groups of specialties in the judgment of appropriateness (P < .001) and comprehensiveness (P = .038).We developed and verified a safety and usability guideline for CIS that qualifies the requirements of both clinical workflows and usability issues. The developed guideline can be a practical tool to enhance the usability and safety of CISs. Further validation is required by applying the guideline for designing the actual CIS.


Asunto(s)
Sistemas de Apoyo a Decisiones Clínicas/normas , Aplicaciones de la Informática Médica , Interfaz Usuario-Computador , Ergonomía , Humanos , Errores Médicos/prevención & control , Seguridad del Paciente , Flujo de Trabajo
7.
Am J Hosp Palliat Care ; 38(2): 180-190, 2021 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-32462895

RESUMEN

Communication between patients and family caregivers plays a key role in successful end-of-life (EOL) care. In the majority of cases, health-care providers (HCP) are responsible for leading this communication in clinical settings. This systematic review aimed to examine the evidence for the efficacy of HCP-led interventions in enhancing communication between patients and family caregivers. The review followed Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and involved a search of MEDLINE via PubMed, CINAHL, Scopus, Embase, and PsycINFO as well as a manual search for additional articles on Google Scholar without date restrictions. Of 2955 articles retrieved, 8 meeting the eligibility criteria were included in the review. A quality appraisal of the selected studies was performed using the van Tulder Scale, with 5 of 8 studies rated as high quality. All 8 studies employed psychoeducational interventions involving both patients and surrogate/family caregivers. Common elements of the interventions reviewed included encouraging participant dyads to share their concerns about the patient's medical condition, clarify their goals and values for EOL care, and discuss their EOL care preferences. Of 8 interventions reviewed, 6 measured EOL care preference congruence within dyads as a primary outcome, and all 6 interventions were effective in increasing congruence. Secondary outcomes measured included decisional conflict and relationship quality, with mixed outcomes reported. This review suggests that HCP-led EOL communication interventions show promise for improving EOL care preference congruence. However, further studies with improved methodological rigor are needed to establish the optimal timing, intensity, and duration of interventions.


Asunto(s)
Cuidados Paliativos al Final de la Vida , Cuidado Terminal , Cuidadores , Comunicación , Muerte , Humanos
8.
BMC Microbiol ; 20(1): 136, 2020 05 27.
Artículo en Inglés | MEDLINE | ID: mdl-32460704

RESUMEN

BACKGROUND: Lactococcus members belonging to lactic acid bacteria are widely used as starter bacteria in the production of fermented dairy products. From kimchi, a Korean food made of fermented vegetables, Lactococcus raffinolactis WiKim0068 was isolated and its genome was analyzed. RESULTS: The complete genome of the strain WiKim0068 consists of one chromosome and two plasmids that comprises 2,292,235 bp, with a G + C content of 39.7 mol%. Analysis of orthoANI values among Lactococcus genome sequences showed that the strain WiKim0068 has > 67% sequence similarity to other species and subspecies. In addition, it displayed no antibiotic resistance and can metabolize nicotinate and nicotinamide (vitamin B3). CONCLUSION: These results augments our understanding of the genus Lactococcus and suggest that this new strain has potential industrial applications.


Asunto(s)
Lactococcus/clasificación , Verduras/microbiología , Secuenciación Completa del Genoma/métodos , Composición de Base , Fermentación , Tamaño del Genoma , Genoma Bacteriano , Lactococcus/aislamiento & purificación , Lactococcus/fisiología , Niacina/metabolismo , Niacinamida/metabolismo , Filogenia , Probióticos/análisis
9.
J Anim Sci Technol ; 62(6): 952-955, 2020 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-33987575

RESUMEN

Bacteroides sp. CACC 737 was isolated from a feline, and its potential probiotic properties were characterized using functional genome analysis. Whole-genome sequencing was performed using the PacBio RSII and Illumina HiSeq platforms. The complete genome of strain CACC 737 contained 4.6 Mb, with a guanine (G) + cytosine (C) content of 45.8%, six cryptic plasmids, and extracellular polysaccharide gene as unique features. The strain was beneficial to animal health when consumed as feed, for example, for ameliorating immunological dysfunctions and metabolic disorders. The genome information adds to the comprehensive understanding of Bacteroides sp. and suggests potential animal-related industrial applications for this strain.

10.
PLoS One ; 14(6): e0218922, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31242260

RESUMEN

The present study aimed to evaluate the probiotic characteristics of certain microbial strains for potential use as feed additives. Three bacterial strains and a yeast previously isolated from different environments were investigated. The strains were subjected to molecular identification and established as Lactobacillus paracasei CP133, Lactobacillus plantarum CP134, Bacillus subtilis CP350 and Saccharomyces cerevisiae CP605. Lactobacillus sp. CP133 and CP134 exhibited antibiosis, antibiotic activity, and relative odor reduction ability. Bacillus subtilis CP350 was thermotolerant, reduced hydrogen sulfide gas and showed significant proteolytic activity, whereas Saccharomyces cerevisiae CP605 exhibited high acid and bile salt tolerance. In general, the isolates in this study demonstrated improved functional characteristics, particularly acid and bile tolerance and relative cell adhesion to HT-29 monolayer cell line. Results in this work provides multifunctional probiotic characteristics of the strains for potential development of probiotics and cleaning of the environment.


Asunto(s)
Alimentación Animal/microbiología , Bacterias/crecimiento & desarrollo , Probióticos/farmacología , Antibacterianos/farmacología , Antibiosis/efectos de los fármacos , Bacillus subtilis/crecimiento & desarrollo , Ácidos y Sales Biliares/farmacología , Adhesión Celular/efectos de los fármacos , Línea Celular Tumoral , Microbiología de Alimentos/métodos , Células HT29 , Humanos , Lacticaseibacillus paracasei/crecimiento & desarrollo , Lactobacillus plantarum/crecimiento & desarrollo , Staphylococcus aureus/crecimiento & desarrollo
11.
J Microbiol ; 57(1): 30-37, 2019 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-30392155

RESUMEN

White colony-forming yeasts (WCFYs) often appear in fermented foods, depending on the storage method. Despite the ongoing research on fermented foods, the community and genome features of WCFYs have not been well studied. In this study, the community structures of WCFYs on fermented vegetables (kimchi) prepared with various raw materials were investigated using deep sequencing. Only eight operational taxonomic units (OTUs) were detected, indicating that the community structure of WCFYs on kimchi is very simple. The five most abundant OTUs represented Pichia kluyveri, Yarrowia lipolytica, Candida sake, Hanseniaspora uvarum, and Kazachstania servazzii. Using a culture-dependent method, 41 strains representing the five major OTUs were isolated from the surface of the food samples. Whole genomes of the five major yeast strains were sequenced and annotated. The total genome length for the strains ranged from 8.97 Mbp to 21.32 Mbp. This is the first study to report genome sequences of the two yeasts Pichia kluyveri and Candida sake. Genome analysis indicated that each yeast strain had core metabolic pathways such as oxidative phosphorylation; purine metabolism; glycolysis/gluconeogenesis; aminoacyl-tRNA biosynthesis; citrate cycle; but strain specific pathways were also found. In addition, no toxin or antimicrobial resistance genes were identified. Our study provides genome information for five WCFY strains that may highlight their potential beneficial or harmful metabolic effects in fermented vegetables.


Asunto(s)
Alimentos Fermentados/microbiología , Verduras/microbiología , Levaduras/genética , Levaduras/metabolismo , Fermentación , Genoma Fúngico , Genómica , Filogenia , Levaduras/clasificación , Levaduras/aislamiento & purificación
12.
Healthc Inform Res ; 24(3): 157-169, 2018 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-30109149

RESUMEN

OBJECTIVES: The usability of clinical information systems (CISs) is known to be an essential consideration in ensuring patient safety as well as integrating clinical flow. This study aimed to determine how usability and safety guidelines of CIS consider clinical workflow through a systematic review in terms of the target systems, methodology, and guideline components of relevant articles. METHODS: A literature search was conducted for articles published from 2000 to 2015 in PubMed, Cochrane, EMBASE, Web of Science, and CINAHL. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement method was employed. Articles containing recommendations, principles, and evaluation items for CIS usability and safety were included. The selected articles were classified according to article type, methodology, and target systems. Taking clinical workflow into consideration, the components of guidelines were extracted and classified. RESULTS: A total of 7,401 articles were identified by keyword search. From the 76 articles remaining after abstract screening, 15 were selected through full-text review. Literature review (n = 7) was the most common methodology, followed by expert opinions (n = 6). Computerized physician order entry (n = 6) was the most frequent system. Four articles considered the entire process of clinical tasks, and two articles considered the principles of the entire process of user interface affecting clinical workflow. Only two articles performed heuristic evaluations of CISs. CONCLUSIONS: The usability and safety guidelines of CISs need improvement in guideline development methodology and with consideration of clinical workflow.

13.
Food Chem ; 265: 135-143, 2018 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-29884364

RESUMEN

We investigated the effects of jeotgal (fermented fish sauce) on kimchi fermentation, with or without saeu-jeot and myeolchi-jeot. Bacterial community analysis showed that Leuconostoc, Weissella, Lactobacillus, and Tetragenococcus were the dominant genera; however, their succession depended on the presence of jeotgal. Leuconostoc gasicomitatum was the dominant species in kimchi without jeotgal, whereas Weissella koreensis and Lactobacillus sakei were the dominant species in kimchi with myeolchi-jeot and saeu-jeot, respectively. Metabolite analysis, using 1H NMR, showed that the amounts of amino acids and gamma-aminobutyric acid (GABA) were higher in kimchi with jeotgal. Increases in acetate, lactate, and mannitol contents depended on fructose consumption and were more rapid in kimchi with jeotgal. Moreover, the consumption of various amino acids affected the increase in kimchi LAB. Thus, the role of jeotgal in kimchi fermentation was related to enhancement of taste, the amino acid source, and the increases in levels of functional metabolites.


Asunto(s)
Bacterias/metabolismo , Fermentación , Alimentos Fermentados , Peces/microbiología , Microbiología de Alimentos , Metabolómica , Animales , Manipulación de Alimentos
14.
Sci Rep ; 8(1): 7777, 2018 05 17.
Artículo en Inglés | MEDLINE | ID: mdl-29773867

RESUMEN

Environmental temperature is one of the most important factors for the growth and survival of microorganisms. Here we describe a novel extremely halophilic archaeon (haloarchaea) designated as strain CBA1119T isolated from solar salt. Strain CBA1119T had the highest maximum and optimal growth temperatures (66 °C and 55 °C, respectively) and one of the largest genome sizes among haloarchaea (5.1 Mb). It also had the largest number of strain-specific pan-genome orthologous groups and unique pathways among members of the genus Natrinema in the class Halobacteria. A dendrogram based on the presence/absence of genes and a phylogenetic tree constructed based on OrthoANI values highlighted the particularities of strain CBA1119T as compared to other Natrinema species and other haloarchaea members. The large genome of strain CBA1119T may provide information on genes that confer tolerance to extreme environmental conditions, which may lead to the discovery of other thermophilic strains with potential applications in industrial biotechnology.


Asunto(s)
Halobacteriaceae/fisiología , Temperatura , Clima , Tamaño del Genoma , Genoma Arqueal , Halobacteriaceae/genética , Halobacteriaceae/crecimiento & desarrollo , Filogenia , Termotolerancia/genética
15.
Int J Rheum Dis ; 21(12): 2188-2192, 2018 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-27457028

RESUMEN

Pulmonary thromboembolism (PTE) is rarely reported in Behçet's disease (BD) due to its distinctive thrombus-forming mechanism. In BD, the inflammation on vessel walls causes venous thrombosis. The thrombi are considered to be tethered to the inflamed walls making embolization less frequent. Thus, immunosuppressive agents are the mainstay of treatment. However, the necessity of anticoagulation therapy is controversial because of its uncertain efficacy of resolving thrombi and the possibility of fatal side effects of hemorrhage. A 25-year-old man with recurrent oral aphthae visited with abrupt onset of dyspnea and chest pain. Based on history, imaging studies and laboratory results, he was diagnosed with BD with vascular involvement and antiphospholipid syndrome (APS), causing PTE from deep vein thrombosis. The co-existing APS may have further promoted the thrombosis, shifting his blood profile toward the hypercoagulable state. Immunosuppressive therapy with glucocorticoid and azathioprine, and concomitant anticoagulation with warfarin were achieved successfully without any fatal complications. When atypical features of vascular involvement in BD develop, other coexisting diseases should be considered to design an optimal therapeutic plan.


Asunto(s)
Síndrome Antifosfolípido/complicaciones , Síndrome de Behçet/complicaciones , Embolia Pulmonar/etiología , Trombosis de la Vena/etiología , Adulto , Anticoagulantes/uso terapéutico , Síndrome Antifosfolípido/sangre , Síndrome Antifosfolípido/diagnóstico , Síndrome Antifosfolípido/tratamiento farmacológico , Síndrome de Behçet/sangre , Síndrome de Behçet/diagnóstico , Síndrome de Behçet/tratamiento farmacológico , Angiografía por Tomografía Computarizada , Humanos , Inmunosupresores/uso terapéutico , Masculino , Flebografía/métodos , Embolia Pulmonar/sangre , Embolia Pulmonar/diagnóstico por imagen , Embolia Pulmonar/prevención & control , Factores de Riesgo , Resultado del Tratamiento , Trombosis de la Vena/sangre , Trombosis de la Vena/diagnóstico por imagen , Trombosis de la Vena/tratamiento farmacológico
17.
Int J Syst Evol Microbiol ; 67(12): 4936-4942, 2017 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-29043955

RESUMEN

A novel strain of lactic acid bacteria, WiKim39T, was isolated from a scallion kimchi sample consisting of fermented chili peppers and vegetables. The isolate was a Gram-positive, rod-shaped, non-motile, catalase-negative and facultatively anaerobic lactic acid bacterium. Phylogenetic analysis of the 16S rRNA gene sequence showed that strain WiKim39T belonged to the genus Lactobacillus, and shared 97.1-98.2 % pair-wise sequence similarities with related type strains, Lactobacillus nodensis, Lactobacillus insicii, Lactobacillus versmoldensis, Lactobacillus tucceti and Lactobacillus furfuricola. The G+C content of the strain based on its genome sequence was 35.3 mol%. The ANI values between WiKim39T and the closest relatives were lower than 80 %. Based on the phenotypic, biochemical, and phylogenetic analyses, strain WiKim39T represents a novel species of the genus Lactobacillus, for which the name Lactobacillus allii sp. nov. is proposed. The type strain is WiKim39T (=KCTC 21077T=JCM 31938T).


Asunto(s)
Alimentos Fermentados/microbiología , Microbiología de Alimentos , Lactobacillus/clasificación , Filogenia , Técnicas de Tipificación Bacteriana , Composición de Base , ADN Bacteriano/genética , Lactobacillus/genética , Lactobacillus/aislamiento & purificación , Hibridación de Ácido Nucleico , ARN Ribosómico 16S/genética , República de Corea , Análisis de Secuencia de ADN
18.
J Ginseng Res ; 41(4): 524-530, 2017 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-29021699

RESUMEN

BACKGROUND: Panax ginseng is a physiologically active plant widely used in traditional medicine that is characterized by the presence of ginsenosides. Rb1, a major ginsenoside, is used as the starting material for producing ginsenoside derivatives with enhanced pharmaceutical potentials through chemical, enzymatic, or microbial transformation. METHODS: To investigate the bioconversion of ginsenoside Rb1, we prepared kimchi originated bacterial strains Leuconostoc mensenteroides WiKim19, Pediococcus pentosaceus WiKim20, Lactobacillus brevis WiKim47, Leuconostoc lactis WiKim48, and Lactobacillus sakei WiKim49 and analyzed bioconversion products using LC-MS/MS mass spectrometer. RESULTS: L. mesenteroides WiKim19 and Pediococcus pentosaceus WiKim20 converted ginsenoside Rb1 into the ginsenoside Rg3 approximately five times more than Lactobacillus brevis WiKim47, Leuconostoc lactis WiKim48, and Lactobacillus sakei WiKim49. L mesenteroides WIKim19 showed positive correlation with ß-glucosidase activity and higher transformation ability of ginsenoside Rb1 into Rg3 than the other strains whereas, P. pentosaceus WiKim20 showed an elevated production of Rb3 even with lack of ß-glucosidase activity but have the highest acidity among the five lactic acid bacteria (LAB). CONCLUSION: Ginsenoside Rg5 concentration of five LABs have ranged from ∼2.6 µg/mL to 6.5 µg/mL and increased in accordance with the incubation periods. Our results indicate that the enzymatic activity along with acidic condition contribute to the production of minor ginsenoside from lactic acid bacteria.

19.
Sci Rep ; 7(1): 10904, 2017 09 07.
Artículo en Inglés | MEDLINE | ID: mdl-28883404

RESUMEN

Lactic acid bacteria produce diverse functional metabolites in fermented foods. However, little is known regarding the metabolites and the fermentation process in kimchi. In this study, the culture broth from Leuconostoc lactis, a lactic acid bacterium isolated from kimchi, was analysed by liquid chromatography-tandem mass spectrometry and identified by the MS-DIAL program. The MassBank database was used to analyse the metabolites produced during fermentation. A mass spectrum corresponding to 2-hydroxyisocaproic acid (HICA) was validated based on a collision-induced dissociation (CID) fragmentation pattern with an identified m/z value of 131.07. HICA production by lactic acid bacteria was monitored and showed a positive correlation with hydroxyisocaproate dehydrogenases (HicDs), which play a key role in the production of HICA from leucine and ketoisocaproic acid. Interestingly, the HICA contents of kimchi varied with Leuconostoc and Lactobacillus content during the early stage of fermentation, and the addition of lactic acid bacteria enhanced the HICA content of kimchi. Our results suggest that HICA production in kimchi is dependent on the lactic acid bacterial composition.


Asunto(s)
Caproatos/metabolismo , Microbiología de Alimentos , Lactobacillus/crecimiento & desarrollo , Lactobacillus/metabolismo , Leuconostoc/crecimiento & desarrollo , Leuconostoc/metabolismo , Cromatografía Liquida , Fermentación , Metaboloma , Espectrometría de Masas en Tándem
20.
Food Microbiol ; 66: 173-183, 2017 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-28576366

RESUMEN

The microbial communities in kimchi vary widely, but the precise effects of differences in region of origin, ingredients, and preparation method on the microbiota are unclear. We analyzed the bacterial community composition of household (n = 69) and commercial (n = 19) kimchi samples obtained from six Korean provinces between April and August 2015. Samples were analyzed by barcoded pyrosequencing targeting the V1-V3 region of the 16S ribosomal RNA gene. The initial pH of the kimchi samples was 5.00-6.39, and the salt concentration was 1.72-4.42%. Except for sampling locality, all categorical variables, i.e., salt concentration, major ingredient, fermentation period, sampling time, and manufacturing process, influenced the bacterial community composition. Particularly, samples were highly clustered by sampling time and salt concentration in non-metric multidimensional scaling plots and an analysis of similarity. These results indicated that the microbial community differed according to fermentation conditions such as salt concentration, major ingredient, fermentation period, and sampling time. Furthermore, fermentation properties, including pH, acidity, salt concentration, and microbial abundance differed between kimchi samples from household and commercial sources. Analyses of changes in bacterial ecology during fermentation will improve our understanding of the biological properties of kimchi, as well as the relationships between these properties and the microbiota of kimchi.


Asunto(s)
Bacterias/metabolismo , Biodiversidad , Brassica/microbiología , Verduras/microbiología , Bacterias/clasificación , Bacterias/genética , Bacterias/aislamiento & purificación , Brassica/metabolismo , Fermentación , Metagenómica , Verduras/metabolismo
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