662 results match your criteria: "Advanced Radiation Technology institute[Affiliation]"

Granulomas, dense clusters of immune cells and bacteria, are critical barriers in tuberculosis (TB) treatment. Recent advancements in TB management have highlighted granuloma control as a potential host-directed therapy (HDT) strategy. Although isoniazid (INH) is the first-line drug for TB therapy, its efficacy is limited to non-replicating Mycobacterium tuberculosis (Mtb) under granulomatous conditions, necessitating the development of more effective derivatives.

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Synthesis of nickel-boron/reduced graphene oxide for efficient and stable lithium-ion storage.

Heliyon

December 2024

Radiation Fusion Research Division, Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), 29 Geumgu-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea.

Electrode material capacities and cycle performances must improve for large-scale applications such as energy storage systems. Numerous investigations have developed cathode materials to improve lithium-ion batteries (LIBs) performance: however, few have examined new anode materials. In this study, we synthesized a Ni-B/reduced graphene oxide (RGO) composites via a simple chemical reaction method to enhance the stability of electrodes in LIBs.

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Inducible cyclooxygenase-2 (COX-2) is a crucial enzyme involved in the processes of inflammation and carcinogenesis, primarily by catalyzing the production of prostaglandin E2 (PGE2), a significant mediator of inflammation. In this study, we designed and synthesized a series of novel chrysin derivatives to evaluate their anti-inflammatory potential through COX-2 inhibition using cultures of RAW264.7 macrophages and molecular docking assays.

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Background: Vegetable oils are primarily composed of unsaturated fatty acids. Soybean [Glycine max (L.) Merr.

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The increasing use of radiation presents a risk of radiation exposure, making the development of radioprotectors necessary. In the previous study, it is investigated that Deinococcus radiodurans (R1-EVs) exert the antioxidative properties. However, the radioprotective activity of R1-EVs remains unclear.

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Recent advances and factors affecting the adsorption of nano/microplastics by magnetic biochar.

Chemosphere

February 2025

Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute, Jeongeup, 56212, Republic of Korea; Radiation Science, University of Science and Technology, Daejeon, 34113, Republic of Korea. Electronic address:

The increase in nano/microplastics (NPs/MPs) from various everyday products entering aquatic environments highlights the urgent need to develop mitigation strategies. Biochar (BC), known for its excellent adsorption capabilities, can effectively target various harmful organic and inorganic pollutants. However, traditional methods involving powdered BC necessitate centrifugation and filtration, which can lead to the desorption of pollutants and subsequent secondary pollution.

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Silybin Derivatives Produced by γ-Irradiation and Their Tyrosinase Inhibitory Activities.

Molecules

November 2024

Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute (KAERI), Jeongeup-si 56212, Jeonbuk-do, Republic of Korea.

Silybin, which belongs to the flavonolignan group, is the major component of the fruit extract of (common name: milk thistle). Silybin is a medicinal compound with hepatoprotective, antioxidant, and anticancer properties. In this study, silybin derivatives were produced through γ-radiolysis, and their tyrosinase inhibitory activities were evaluated to explore the enhanced activities of silybin derivatives compared to silybin ().

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Production of derivatives of α-terpineol by bacterial CYP102A1 enzymes.

Biotechnol Lett

November 2024

School of Biological Sciences and Biotechnology, Graduate School, Chonnam National University, 77 Yongbongro, Gwangju, 61186, Republic of Korea.

The monooxygenase activity of engineered CYP102A1 on α-terpineol was investigated. CYP102A1 M850 mutant (F11Y/R47L/D68G/F81I/F87V/E143G/L188Q/E267V/H408R) showed the highest catalytic activity toward α-terpineol among the engineered mutants produced by random mutagenesis. The major product (P1) of α-terpineol, p-menth-1-ene-3,8-diol, was characterized by high-performance liquid chromatography, gas-chromatography mass spectrometry, and nuclear magnetic resonance spectroscopy.

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Inhibitory Effects of New Epicatechin Oligomers on Nitric Oxide Production.

Int J Mol Sci

October 2024

Research Division for Biotechnology, Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), Jeongeup 56212, Republic of Korea.

The primary aim of this research was to identify the structural characteristics of three newly derived procyanidins from cold plasma-treated (-)-epicatechin, known for their anti-inflammatory properties. The newly generated compounds were isolated through column chromatography, and their chemical structures were elucidated through spectroscopic data analyses, including both one-dimensional and two-dimensional nuclear magnetic resonance (NMR) and mass spectrometry (MS) techniques. Furthermore, their absolute configurations were determined via circular dichroism (CD) spectroscopy.

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Electron beam (EB) technology typically consists of high-energy electron streams produced by a linear accelerator. Although promising, the use of EB irradiation as a technique to delay ripening and prevent spoilage in tomatoes has not been extensively investigated. In this study, the effectiveness of EB irradiation in prolonging the shelf life of tomatoes postharvest was investigated.

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Sucrose is a desirable component of processed soybean foods and animal feed, and thus, its content is used as an important characteristic for assessing the quality of soybean seeds. However, few studies have focused on the quantitative trait loci (QTLs) associated with sucrose regulation in soybean seeds. This study aims to measure the sucrose content of 1014 soybean accessions and identify genes related to high sucrose levels using QTL analysis.

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Article Synopsis
  • Preventing post-weaning diarrhea (PWD) in piglets is essential for swine production, as the stress from weaning and dietary changes affects gut health and increases pathogens.
  • Research on Lactiplantibacillus argentoratensis AGMB00912 (LA) shows that its supplementation significantly improves growth metrics and reduces diarrhea symptoms in weaned piglets by enhancing beneficial gut bacteria and gut barrier integrity.
  • Overall, LA supplementation is a promising strategy for promoting intestinal health and decreasing the severity of PWD during the critical weaning period in piglets.
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Background: Ionizing radiation has been used for mutagenesis or material modification. The potential to use microalgae as a platform for antimicrobial production has been reported, but little work has been done to advance it beyond characterization to biotechnology. This study explored two different applications of ionizing radiation as a metabolic remodeler and a molecular modifier to enhance the antimicrobial activity of total protein and solvent extracts of Chlamydomonas reinhardtii cells.

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Maintaining a healthy intestinal environment, optimal epithelial barrier integrity, and balanced gut microbiota composition are essential for the growth performance of weaning pigs. We identified AGMB00912 (LA) in healthy porcine feces as having antimicrobial activity against pathogens and enhanced short-chain fatty acid (SCFA) production. Herein, we assess the protective role of LA using a weaning mouse model with enterotoxigenic (ETEC) infection.

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Article Synopsis
  • Cannabis plants have separate male and female varieties, with female flowers producing higher cannabinoid content, making male flower induction valuable for breeding.
  • The research used silver thiosulfate (STS) treatment on three female cannabis cultivars, finding that a concentration of 1.5 mM STS at an early reproductive stage effectively induced male flowers.
  • The study concluded that multiple STS treatments maximized male flower induction, with high pollen viability indicating potential for successful self-pollination in the induced male flowers.
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Molecular modification of chlorogenic acid via radiolysis with inhibitory effects on NO production.

Biosci Biotechnol Biochem

October 2024

Research division for Biotechnology, Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), Jeongeup, Republic of Korea.

The molecular modification of chlorogenic acid (1) through γ-irradiation resulted in the formation of five new products: chlorogenosins A (2), B (3), C (4), D (5), and E (6) along with known compounds rosmarinosin B (7), protocatechuic acid (8), and protocatechuic aldehyde (9). The structures of the new compounds were elucidated using spectroscopic methods, including one-dimensional and two-dimensional nuclear magnetic resonance, high-resolution electrospray ionization mass spectroscopy, and circular dichroism spectroscopy. The potential anti-inflammatory activities of all the isolated compounds were determined by evaluating their inhibitory effects on the nitric oxide (NO) production in lipopolysaccharide-induced RAW 264.

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Processes to enable hysteresis-free operation of ultrathin ALD Te p-channel field-effect transistors.

Nanoscale Horiz

October 2024

Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), 77, Cheongam-ro, Nam-gu, Pohang-si, Gyeongsangbuk-do 37673, Republic of Korea.

Recently, tellurium (Te) has been proposed as a promising p-type material; however, even the state-of-the-art results couldn't overcome the critical roadblocks for its practical applications, such as large - hysteresis and high off-state leakage current. We developed a novel Te atomic layer deposition (ALD) process combined with a TeO seed layer and AlO passivation to detour the limitations of p-type Te semiconducting materials. Also, we have identified the origins of high hysteresis and off current using the 77 K operation study and passivation process optimization.

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In this study, we investigated the effects of gamma irradiation on the antioxidant activity and metabolite profiles of calli (PC3012). Gamma irradiation at various doses (0, 0.05, 0.

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Epoxidation of perillyl alcohol by engineered bacterial cytochrome P450 BM3.

Enzyme Microb Technol

October 2024

School of Biological Sciences and Technology, Chonnam National University, 77 Yongbong-ro, Gwangju 61186, the Republic of Korea; School of Biological Sciences and Biotechnology, Graduate School, Chonnam National University, 77 Yongbong-ro, Gwangju 61186,  the Republic of Korea; Institute of Synthetic Biology for Carbon Neutralization, Yongbong-ro 77, Gwangju 61186, the Republic of Korea. Electronic address:

Perillyl alcohol (POH) is a secondary metabolite of plants. POH and its derivatives are known to be effective as an anticancer treatment. In this study, oxidative derivatives of POH, which are difficult to synthesize chemically, were synthesized using the engineered bacterial cytochrome P450 BM3 (CYP102A1) as a biocatalyst.

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Sensing and responding to host-derived stress signals: lessons from fungal meningitis pathogen.

Curr Opin Microbiol

August 2024

Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, Republic of Korea. Electronic address:

The sophisticated ability of living organisms to sense and respond to external stimuli is critical for survival. This is particularly true for fungal pathogens, where the capacity to adapt and proliferate within a host is essential. To this end, signaling pathways, whether evolutionarily conserved or unique, have been refined through interactions with the host.

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Lactiplantibacillus argentoratensis AGMB00912 alleviates salmonellosis and modulates gut microbiota in weaned piglets: a pilot study.

Sci Rep

July 2024

Research Division for Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, 29 Geumgu-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea.

This study aimed to evaluate the efficacy of Lactiplantibacillus argentoratensis AGMB00912 (LA) in reducing Salmonella Typhimurium infection in weaned piglets. The investigation focused on the influence of LA on the gut microbiota composition, growth performance, and Salmonella fecal shedding. The results indicated that LA supplementation significantly improved average daily gain and reduced the prevalence and severity of diarrhea.

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Fluorescent cytotoxic compounds with readout delivery are crucial in chemotherapy. The growing demands of these treatment strategies require the novel heterocyclic molecules with better selectivity alongside fluorescence marker potential. In this context, a series of nine isatin Schiff base derivatives 4a-i were synthesized, characterized and evaluated for UV-visible, fluorescence, thermal and bioanalysis in order to explore the effect of structure on their bioprofiles.

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