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Keyword: chromatography

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  • Scraps of Red Fabric Found in Judean Desert Identified

    08/03/2024 6:17:22 AM PDT · by SunkenCiv · 20 replies
    Archaeology Magazine ^ | July 29, 2024 | unattributed / editors
    Newsweek reports that two wool textile fragments discovered in Israel’s Cave of Skulls in 2016 had been dyed bright red with dye made from Kermes vermilio, a species of scale insect. The fabric has been dated to 3,800 years ago, making it the oldest known use of scale insects for dyeing textiles.“Identifying the dye in the ancient textile was achieved using High-Performance Liquid Chromatography (HPLC)—a device commonly employed in biology and chemistry laboratories to separate and identify substances in minute quantities,” said Na’ama Sukenik of the Israel Antiquities Authority.A large quantity of the insects would be needed to produce a...
  • Detecting disease with a little TLC

    02/04/2010 3:19:10 PM PST · by neverdem · 1 replies · 178+ views
    Highlights in Chemical Biology ^ | 04 February 2010 | Rachel Cooper
    A simple, low cost method to detect toxins from the organism causing the wasting disease Buruli ulcer has been developed by US scientists. Buruli ulcer is a wasting disease caused by organisms called Mycobacterium Ulcerans, which are in the same group as the organisms causing leprosy and tuberculosis. Early diagnosis and treatment are vital as delayed treatment may cause irreversible deformity, long-term functional disability such as restriction of joint movement, extensive skin lesions and sometimes life-threatening secondary infections. Polymerase chain reaction of M.ulcerans DNA is commonly used to detect the infection, but is expensive and difficult to maintain reliably say Yoshito Kishi and Thomas...