Hui-Chun Lee

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The dietary intake of industrially-produced trans fatty acids (IP-TFA) was estimated for the US population (aged 2 years or more), children (aged 2-5 years) and teenage boys (aged 13-18 years) using the 2003-2006 National Health and Nutrition Examination Survey (NHANES) food consumption database, market share information and trans fat levels based on label(More)
A novel tadalafil analogue found in a dietary supplement by routine drug-adulteration screening was isolated by column chromatography and HPLC. On the basis of extensive 1D- and 2D-nuclear magnetic resonance (NMR), infrared (IR) and mass spectral analyses, the structure of the new compound YJ-02 was established as(More)
In a maca-containing herbal supplement claimed to remedy erectile dysfunction, a new sildenafil analogue was found using adulterant screening with TLC, GC-MS and LC-MS/MS. This compound was isolated by column chromatography and HPLC, and identified by extensive 1D- and 2D-NMR and mass spectral analyses. The structure of this new compound was established as(More)
A novel tadalafil analogue in a dietary supplement was found by drug-adulteration screening and isolated by column chromatography and HPLC. Based on extensive 1D- and 2D-NMR and mass spectral analyses, the structure of this new compound was determined as 2-(N,N-dipropyl acetyl) 3-methyl(More)
In 2008, we surveyed 690 parents and 104 teachers at kindergartens in Taiwan about their knowledge of and attitude towards enterovirus 71 infections. The accurate response rate for enterovirus infection characteristics was greater than 80% for specific symptoms, prevalent age group, and predominant infection season. Parents and teachers felt great anxiety(More)
A novel sildenafil analogue found in herbal products by a routine drug-adulteration screening programme was isolated by column chromatography. On the basis of extensive 1D- and 2D-nuclear magnetic resonance (NMR) spectroscopy and mass spectral analysis, the structure of a new compound YJ-07 was established as(More)
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