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 JoVE Biology

An Easy Method for Plant Polysome Profiling

1Laboratoire de Génétique et Biophysique des Plantes, Aix-Marseille Université, 2UMR 7265 Biologie Végétale & Microbiologie Environnementales, CNRS, 3BIAM, CEA, 4Department of Biology, Biocenter, University of Copenhagen, 5Laboratoire de Chimie Bactérienne, 6CNRS, LCB UMR 7283, Aix Marseille Université


JoVE 54231

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 JoVE Environment

Transcript and Metabolite Profiling for the Evaluation of Tobacco Tree and Poplar as Feedstock for the Bio-based Industry

1Max Planck Institute for Molecular Plant Physiology, 2School of Biological Sciences, Plant Molecular Science, Centre for Systems and Synthetic Biology, Royal Holloway, University of London, 3Department of Plant Systems Biology, VIB, 4Department of Plant Biotechnology and Bioinformatics, UGhent, 5Institute for Building Materials, ETH Zurich, 6Applied Wood Materials, EMPA, 7Division of Glycoscience, School of Biotechnology, AlbaNova University Center, Royal Institute of Technology (KTH), 8European Research and Project Office GmbH, 9ABBA Gaia S.L., 10Pflanzenöltechnologie, 11Capax Environmental Services, 12Green Fuels, 13Neutral Consulting Ltd, 14Plant Cell Biology Research Centre, School of Botany, University of Melbourne


JoVE 51393

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 JoVE Biology

Glycan Profiling of Plant Cell Wall Polymers using Microarrays

1Australian Centre of Excellence in Plant Cell Walls, School of Botany, University of Melbourne, 2Plant Cell Biology Research Centre, School of Botany, University of Melbourne, 3CSIRO Plant Industry, Black Mountain Laboratories, 4Department of Plant Biology and Biotechnology, University of Copenhagen


JoVE 4238

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 Science Education: Essentials of Earth Science

Conversion of Fatty Acid Methyl Esters by Saponification for Uk'37 Paleothermometry

JoVE Science Education

Source: Laboratory of Jeff Salacup - University of Massachusetts Amherst

The product of an organic solvent extraction, a total lipid extract (TLE), is often a complex mixture of hundreds, if not thousands, of different compounds. The researcher is often only interested in a handful of compounds or, if interested in many, may need to remove unwanted constituents that are"in the way" or co-eluting. For example, the concentrations of individual compounds in a sample are often determined on a gas chromatograph coupled to a flame-ionizing detector (GC-FID), because the relationship between FID response (in pA) and the amount of compound in a sample (e.g., ng/µL) is both linear and sensitive. The GC portion of the instrument separates different compounds in a sample based on their boiling point, chemical structure, and affinity with a solid phase that can change according to application. The result is a chromatogram (Figure 1), showing the separation of different chemical constituents in time, as well as their relative concentration (calculated as the area under the curve). However, sometimes more than one compound elutes off the GC at a time (Figure 1). In this case, sample purification is required before compounds can be confidently quantified

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