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Posts tagged with "Analytical Chemistry"

  • Analytical Chemistry

    Protein Structures Without Crystallization

    Here’s a report from a team at the University of Toronto of a new way to get protein structures – always a welcome development. (There a summary at Technology Review here). It’s another application of electron cryomicroscopy, which was the subject of a blog post here about a year and half back. As with many… Read More
  • Analytical Chemistry

    Better Drinking Through Chemistry

    This is a fascinating article about a guy who’s looking into the chemistry of aged spirits – rum, whiskey, cognac, and so on – and trying to find ways, as he puts it, to hack the process. I’m not a drinker myself, but I’ve watched with interest as the craft spirits movement has become popular. Read More
  • Analytical Chemistry

    Herbal Disclosure

    Rather quickly, we have some results from that conflict between the New York State Attorney General and the herbal supplements retailers. GNC has reached a deal with the office, and will (1) use DNA barcoding assays to verify that their plant-material supplements are actually the plant on the label, (2) state in its stores and… Read More
  • Analytical Chemistry

    Spectra of An Actual Transition State?

    I don’t spend too much time on physical organic chemistry here on the blog, which in a way is a shame. The readership would dwindle, although probably not as much as when I talk about patent law and intellectual property. But physical organic is an area I’ve always enjoyed, intellectually, even though it was sometimes… Read More
  • Analytical Chemistry

    More Herbal Goodness

    As many will have heard, the New York State Attorney General’s office is going after a number of herbal supplement retailers for selling products with poor quality controls. A range of supplements (including echinacea, garlic, gingko, and saw palmetto) were purchased, and analyzed by the “DNA barcode” technique at Clarkson U. The… Read More
  • Analytical Chemistry

    Guidelines For MOF Crystallography

    There’s a new and very useful paper out on the “molecular sponge” technique for crystallography (first blogged about here, with updates here and here). It’s from the Clardy group at Harvard with collaboration from Argonne, in Acta Crystallographica, and you can tell by reading it that it’s intended to put the whole met… Read More
  • Analytical Chemistry

    NMR of a Mass Spec Species

    I have to say, I didn’t even know that this could be done. This paper from Angewandte Chemie describes a mass spec/NMR combination analysis that had never occurred to me as possible. The authors (from Ohio U. and Purdue) are looking at a common peptide ion seen in proteomic mass spec studies. And what they… Read More
  • Analytical Chemistry

    Google’s Nanoparticle Diagnostic Ideas

    Google’s “Google X” division, the part that works on odd high-risk high-reward projects, is apparently interested in diagnostic nanoparticles. That Wired article is pretty short on specifics, but the company’s Andrew Conrad revealed a few details in a talk yesterday. The idea, apparently, is to use magnetic-cored nanoparticl… Read More
  • Analytical Chemistry

    Phenylalanine Crystals

    No matter how long you’ve been doing chemistry, there are still things that you come across that surprise you. Did you know that plain old L-phenylalanine has been one of the most difficult subjects ever for small-molecule crystallography? I sure didn’t. But people have tried for decades to grow good enough crystals of it to… Read More
  • Analytical Chemistry

    No More Varian

    This week has brought news that Agilent is getting out of the NMR business, which brings an end to the Varian line of machines, one of the oldest in the business. (Agilent bought Varian in 2010). The first NMR I ever used was a Varian EM-360, which was the workhorse teaching instrument back then. A… Read More
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