Publications by authors named "Mi-Hye Yoon"

The draft genome sequence of GIHE-NHR1, a filamentous cyanobacterium, is reported here. Comparative genome analysis suggests that this strain can produce an odor-causing compound (2-methylisoborneol) in water. The genome information is expected to improve the understanding of the putative 2-methylisoborneol production by the bacterium.

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The draft genome sequence of () strain GIHE 2018, a filamentous nitrogen-fixing and potentially harmful cyanobacterium, is reported here. This is the first strain isolated from a shallow freshwater pond in South Korea. This information is expected to improve our understanding of the phylogeography of this species.

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Article Synopsis
  • The study examined the ginsenoside composition and antioxidant properties of hydroponic-cultured ginseng roots (HCR), leaves (HCL), and stems (HCS) using high-performance liquid chromatography.
  • It found that HCL and HCS had significantly higher total ginsenoside contents compared to HCR, with Rg1 being the most abundant in leaves while Rb1 was more concentrated in roots.
  • The research also demonstrated that HCL exhibited the strongest antioxidant activity and the highest inhibitory effect on tyrosinase activity, suggesting that the entire ginseng plant has beneficial properties as a functional vegetable.
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Coffee is the most popular beverage in the Republic of Korea, other than Korea's traditional green tea. Coffee contains many physiologically active substances, such as chlorogenic acids (CGAs) and caffeine. Previous studies have focused on the content of CGAs and caffeine in brewed coffee.

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Noroviruses (NoVs) are the major global source of acute gastroenteritis (AGE) outbreaks. To detect NoVs, real-time reverse transcription-quantitative PCR (RT-qPCR) assays have been widely employed since the first decade of the 21 century. We developed a redesigned probe, JJV1PM, for RT-qPCR assay detection of NoV genogroup (G) I strains.

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The genotype distribution of group A rotaviruses (RVAs) circulating in Gyeonggi province, South Korea between 2009 and 2012 was investigated. A total of 2619 stool specimens from sporadic acute gastroenteritis cases and 117 acute gastroenteritis outbreaks were analyzed. Among them, RVAs were detected from 263 (10.

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Background: New emerging strains of noroviruses (NoVs) often increase acute gastroenteritis (AGE) outbreaks worldwide.

Objective: We analyzed the epidemiological features and genotypic patterns of NoVs in AGE outbreaks.

Study Design: To elucidate the public health impact of NoVs during AGE outbreaks in South Korea, a molecular and epidemiological investigation was performed with 318 AGE outbreaks reported from the Gyeonggi province of South Korea during the period from 2006 to 2013.

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Article Synopsis
  • Bacillus cereus, a bacteria linked to foodborne illnesses, is frequently found in Korean fermented soybean products, with a detection rate of 67.9% in tested samples.
  • Most contamination occurred in deonjang and cheonggukjang, but only 13.6% of samples contained detectable enterotoxins.
  • Despite diverse genetic patterns in the bacteria, they showed similar resistance to antibiotics, indicating a need for ongoing monitoring of contamination levels and toxins in these popular foods to ensure safety.
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Background: The global emergence of norovirus (NoV) GII.4 variants has raised public concerns in the world including South Korea since 1996.

Objective: We analyzed seasonality and genotypic pattern for sporadic cases by norovirus GII-4 variants.

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Amantadine resistance among influenza A viruses was investigated in South Korea in 2005-2010. Of 308 influenza A viruses examined, 229 had the S31N substitution in the M2 protein. The frequency of amantadine resistance was 30 %, 100 %, and 76 % in influenza A/H1N1, pandemic A/H1N1 2009(A/H1N1pdm), and A/H3N2 subtypes, respectively.

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HPLC method for quantitative determination of four preservatives and nine UV filters worldwide authorized in commercial suncare product was developed and validated, and then 101 samples of commercial suncare products were analyzed for the UV filters and preservatives using the proposed method. The mobile phase was acetonitrile-water containing 0.5% acetic acid using a gradient elution at a flow rate of 0.

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Because conventional methods for detecting emetic-toxin-producing B. cereus are laborious and costly, various PCR assays, which are easy and cheap, have recently been reported. Therefore, this study estimated and compared the ability of various PCR assays to detect emetic-toxin-producing B.

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Rotavirus was present in 1,367 of 7,060 stool samples (19.4%) collected in Gyeonggi province of South Korea from 2003 through 2005. The predominant genotypes were confirmed as G4/P2A[6] (19.

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