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Special Highlight
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The analysis of lasso peptides by circular dichroism
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Lasso peptides constitute an interesting and original class of bacterial peptides. They are composed of a macrolactam cycle in which the C-terminal tail is trapped by cumbersome residues or disulfide bridges. The lasso peptides structure is all the more interesting that lasso peptides do not have al...
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Marmots’ discrimination according to their age using GC/MS for molecules identification and quantification
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For over twenty years, researchers from the University Claude Bernard – Lyon 1 have studied marmots living in the French Alps in the Savoy region La Grande Sassière nature reserve. They have tracked family groups in different territories: a typical family group consists of one dominant adult couple,...
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Determination of pesticide adsorption on soils by UHPLC MS-MS
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When farmers apply pesticides on their soils, a part is adsorbed into the soil, and another is routed to rivers, possibly leading to their contamination. The adsorption phenomena are very complex since a lot of chemical and physical parameters have to be considered. Indeed, an equilibrium concentrat...
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Identification of aromatic markers of wine typicity derived from Pinot Noir
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Wine is produced all around the world. It plays an important part in France, French culture and French gastronomy. In France, different types of wine exist, according to where the grapes grow, the type of grape, how it is cultivated, when it is harvested, etc.
In a bottle of wine, there are tw...
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Monolithic columns in high pressure gas chromatography: comparison of two carrier gas
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Monolithic columns have been created 40 years ago and were designed to replace packed columns. Being easier to produce and resistant to high temperature and pressure, they have been extensively studied in gas chromatography (GC). However, after the introduction of open tubular capillary columns, cur...
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