18 Result(s)
within
Dong-Sun Lee
Chemistry
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Article
In-needle Microextraction Coupled with Gas Chromatography/Mass Spectrometry for the Analysis of Phthalates Generating from Food Containers
In this study, we fabricated a new device for headspace in-needle microextraction using a stainless steel wire coated with multiwalled carbon nanotube/polyaniline composite by coulometric technique. Then, the ...
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Article
Erratum to: Citrus unshiu leaf extract containing phytol as a major compound induces autophagic cell death in human gastric adenocarcinoma AGS cells
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Article
Phytochemical Investigation of Rhus parviflora Fruit from Nepal
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Article
Phytochemical Constituents of the Urena lobata Fruit
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Article
Citrus unshiu leaf extract containing phytol as a major compound induces autophagic cell death in human gastric adenocarcinoma AGS cells
The pharmaceutical potential of the methanolic extract of Citrus unshiu leaves (MECL) was assessed through analysis of its inhibitory effect on cancer cells. The antiproliferative activities of the leaves were ev...
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Fluctuation of 20-hydroxyecdysone in individual organs of Achyranthes japonica during reproductive growth stage and its accumulation into seed
To better understand 20-hydroxyecdysone (20E) fluctuation and accumulation in perennial plant, 20E concentration in individual organs of Achyranthes japonica during reproductive growth stage were analyzed by high...
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Article
Anti-viral activity of blue chanterelle (Polyozellus multiplex) that inhibits α-glucosidase
Blue chanterelle (Polyozellus multiplex), known as an edible mushroom, was extracted using methanol to screen on anti-viral agent. Syncytium formation in Newcastle disease virus (NDV)-infected baby hamster kidney...
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Article
Proteasome down-regulation is partly mediated by Slug/Snail2 in hepatocarcinoma cells
Snail family proteins (Snail1 and Slug/Snail2) are transcription factors that regulate transcription of molecules during epithelial-mesenchymal transition (EMT). Snail1/2 is known to bind to the E-box motif (C...
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Erratum to: Trafficking inhibition of bruceanol B as a radical-producing antibiotic
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Article
Screening of Phellinus linteus, a medicinal mushroom, for anti-viral activity
Harmful viruses, including dengue virus, human immunodeficiency virus, and hepatitis B virus are known to be extremely sensitive to glucosidase inhibition. Phellinus linteus, an edible medicinal mushroom, was scr...
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Trafficking inhibition of bruceanol B as a radical-producing antibiotic
Bruceanol B, isolated from a soil microbe strain DS4, generated oxygen radicals in Bacillus subtilis lysates. Bruceanol B inhibited the trafficking of viral glycoprotein in virus-infected baby hamster kidney (BHK...
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Article
Anti-bacterial and anti-viral activities of extracts from Terminalia chebula barks
Effects of methanol extract of Terminalia chebula on antibacterial activity and the generation of superoxide radical in Bacillus subtilis, as well as on syncytium formation and cytopathic activity in virus-infect...
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Article
Production conditions for bruceanol b, an antibiotic that generates oxygen radical
Strain DS4, a soil microorganism producing an oxygen radical-generating antibacterial substance, bruceanol B, was isolated, and cultural conditions for the antibiotic production were optimized. Bruceanol B was...
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Anti-bacterial and anti-viral activity of extracts from Paeonia lactiflora roots
Methanol extracts of Paeonia lactiflora roots (Radix Paeaniae Lactiflora) had antibacterial activity against Bacillus subtilis. These extracts generated superoxide radicals in the B. subtilis lysate. However, the...
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Article
Effect of gas tightness-controlled compartment system on quality kee** of fresh produce stored in household refrigerator
Refrigerator chill compartments with volumes of 22-L were fabricated, which had different gas tightness properties to gas or water vapor, ranging from 1,770 to 107,000 mL/hr·m2·atm in CO2 permeance at 25°C. Those...
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Article
Expression profiling of cultivar-related genes in Satsuma mandarins, Miyagawa wase and Ueno wase
Satsuma mandarin (Citrus unshiu Marc.) is characterized by its tender peel and seedless nature. The representative cultivar of Satsuma mandarin is Miyagawa wase. Another cultivar, Ueno wase was developed from the...
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Article
Purification, characterization, and biochemical properties of α-amylase from potato
Purification, characterization and biochemical properties of α-amylase from post harvest Bangladeshi Potato (Solanum tuberosum L.) were investigated. The α-amylase was purified by successive chromatography on DEA...
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Article
Comparative study of extraction techniques for determination of garlic flavor components by gas chromatography–mass spectrometry
Several sampling techniques based on steam distillation (SD), simultaneous distillation and solvent extraction (SDE), solid-phase trap** solvent extraction (SPTE), and headspace solid-phase microextraction (...
