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  1. Article

    Open Access

    Reduction of surface treatment time by combination of citric acid and ascorbic acid while restoring shear bond strength of metal brackets bonded to bleached enamel: a pilot study

    To investigate the effect of a 50% ascorbic acid with 50% citric acid solution on the immediate shear bond strength (SBS) of metallic brackets after tooth bleaching. The enamel etching pattern and the required...

    Pichanee Saeoweiang, Pattraporn Chobpradit, Chadin Kulsing… in BMC Oral Health (2024)

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  2. No Access

    Article

    Simultaneous Analysis of Drugs in Forensic Cases by Liquid Chromatography–High-Resolution Orbitrap Mass Spectrometry

    In the present study, liquid chromatography coupled to an Orbitrap mass spectrometer (HPLC–Q-Orbitrap MS) was used as an approach for identification and quantification of 113 drugs simultaneously in biological...

    Siti U. Mokhtar, Chadin Kulsing, Jalal T. Althakafy, Alex Kotsos… in Chromatographia (2020)

  3. No Access

    Article

    Studies on the Extraction of Several Polyphenols with Different Silica Hydride Stationary Phases

    The solid-phase extraction of several polyphenolic compounds with different silica hydride-based stationary phases, as well as an unmodified type-B silica, has been investigated. In particular, the propensitie...

    Chadin Kulsing, Yada Nolvachai, Reinhard I. Boysen, Maria T. Matyska… in Chromatographia (2019)

  4. No Access

    Article

    Gas chromatography–mass spectrometry of sapucainha oil (Carpotroche brasiliensis) triacylglycerols comprising straight chain and cyclic fatty acids

    Sapucainha oil, which may be used to treat leprosy, comprises straight chain and cyclic fatty acids (FA), and triacylglycerols (TAG). The FA and TAG content of the oil sample was analysed using gas chromatogra...

    Habtewold D. Waktola, Chadin Kulsing… in Analytical and Bioanalytical Chemistry (2019)

  5. No Access

    Article

    Direct Analysis of Synthetic Phenolic Antioxidants, and Fatty Acid Methyl Ester Stability in Biodiesel by Liquid Chromatography and High-Resolution Mass Spectrometry

    Methods to identify and quantify synthetic phenolic antioxidants, 3-tert-butyl-4-hydroxyanisole (BHA), butylated hydroxytoluene (BHT), tert-butyl-hydroquinone (TBHQ) and propyl gallate (PG), in biodiesel samples ...

    Marcella Casagrande, Chadin Kulsing, Jalal T. Althakafy… in Chromatographia (2019)

  6. No Access

    Article

    Ionic liquid phases with comprehensive two-dimensional gas chromatography of fatty acid methyl esters

    New generation inert ionic liquid (iIL) GC columns IL60i, IL76i and IL111i, comprising phosphonium or imidazolium cationic species, were investigated for separation of fatty acid methyl esters (FAME). In gener...

    Siriluck Pojjanapornpun, Yada Nolvachai… in Analytical and Bioanalytical Chemistry (2018)

  7. No Access

    Article

    Incubation of Aquilaria subintegra with Microbial Culture Supernatants Enhances Production of Volatile Compounds and Improves Quality of Agarwood Oil

    Incubation with microbial culture supernatants improved essential oil yield from Aquilaria subintegra woodchips. The harvested woodchips were incubated with de man, rogosa and sharpe (MRS) agar, yeast mold (YM) a...

    Sakon Monggoot, Chadin Kulsing, Yong Foo Wong… in Indian Journal of Microbiology (2018)

  8. No Access

    Article

    Comprehensive 2D gas chromatography–time-of-flight mass spectrometry with 2D retention indices for analysis of volatile compounds in frankincense (Boswellia papyrifera)

    Frankincense gum resin secreted from Boswellia papyrifera was analysed by comprehensive 2D gas chromatography hyphenated with accurate mass time-of-flight mass spectrometry (GC×GC−accTOFMS). Direct multiple injec...

    Ming Jiang, Chadin Kulsing, Philip J. Marriott in Analytical and Bioanalytical Chemistry (2018)

  9. No Access

    Chapter

    Using Electrochemical Impedance Spectroscopy of Methylene Blue and Ferricyanide for DNA Sensing Surface Characterization

    In pathogen diagnosis, a single stranded target DNA may be detected in a sensor carrying an active surface with a recognition layer of its complementary single stranded DNA (ssDNA probe). Such a surface may be...

    Suthisa Leasen, Kallaya Sritunyalucksana-Dangtip… in Chemistry for Sustainable Development (2012)