Philae is a comet Lander, part of the ESA Rosetta Mission to comet 67P/Churyumov-Gerasimenko. After a ten year cruise through the solar system it successfully landed on the nucleus of the comet on November 12, 2014. Philae's payload consists of ten scientific instruments, including COSAC, an evolved gas analyser with the capability to...
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June 5, 2018 (v1)PublicationUploaded on: February 27, 2023
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June 5, 2018 (v1)Publication
Philae is a comet Lander, part of the ESA Rosetta Mission to comet 67P/Churyumov-Gerasimenko. After a ten year cruise through the solar system it successfully landed on the nucleus of the comet on November 12, 2014. Philae's payload consists of ten scientific instruments, including COSAC, an evolved gas analyser with the capability to...
Uploaded on: December 4, 2022 -
November 11, 2021 (v1)Journal article
Homochiral proteins orchestrate biological functions throughout all domains of life, but the origin of the uniform l-stereochemistry of amino acids remains unknown. Here, we describe enantioselective adsorption experiments of racemic alanine and leucine onto homochiral d- and l-quartz as a possible mechanism for the abiotic emergence of...
Uploaded on: December 3, 2022 -
April 14, 2018 (v1)Conference paper
In the laboratory, the photo-and thermochemical evolution of ices, made of simple molecules of astrophysical relevance, always leads to the formation of semi-refractory water-soluble organic residues. Targeted searches for specific molecules do reveal the notable presence of two families of important molecular "bricks of life": amino acids, key...
Uploaded on: December 4, 2022 -
April 14, 2018 (v1)Conference paper
In the laboratory, the photo-and thermochemical evolution of ices, made of simple molecules of astrophysical relevance, always leads to the formation of semi-refractory water-soluble organic residues. Targeted searches for specific molecules do reveal the notable presence of two families of important molecular "bricks of life": amino acids, key...
Uploaded on: February 22, 2023 -
2021 (v1)Journal article
Circularly polarised light (CPL) interacting with interstellar organic molecules might have imparted chiral bias and hence preluded prebiotic evolution of biomolecular homochirality. The L-enrichment of extra-terrestrial amino acids in meteorites, as opposed to no detectable excess in monocarboxylic acids and amines, has previously been...
Uploaded on: December 4, 2022 -
2019 (v1)Journal article
In the laboratory, the photo-and thermochemical evolution of ices, made of simple molecules of astrophysical relevance, always leads to the formation of semi-refractory water-soluble organic residues. Targeted searches for specific molecules do reveal the notable presence of two families of important molecular " bricks of life " , amino acids,...
Uploaded on: December 4, 2022 -
2019 (v1)Journal article
The biomolecular homochirality in living organisms has been investigated for decades, but its origin remains poorly understood. It has been shown that circular polarized light (CPL) and other energy sources are capable of inducing small enantiomeric excesses (ees) in some primary biomolecules, such as amino acids or sugars. Since the first...
Uploaded on: December 4, 2022 -
February 2021 (v1)Journal article
La chromatographie gazeuse monodimensionnelle (GC)est la technique de choix dans de nombreux laboratoires à travers le monde pour l'analyse de composés volatils ou semi-volatils.Toutefois, la complexité d'un grand nombre d'échantillons empêche fréquemment l'identification de tous les composés.Afin de remédier à ce manque de...
Uploaded on: December 4, 2022 -
2009 (v1)Journal article
Odor impact compounds of Tagetes minuta L. essential oil were studied by gas chromatography (GC)-olfactometry using aroma extract dilution analysis (AEDA) and vocabulary-intensity-duration of elementary odors by sniffing (VIDEO-Sniff). AEDA was conducted by direct injection and revealed the presence of 43 odorant zones. Highest flavor dilution...
Uploaded on: December 4, 2022 -
2010 (v1)Journal article
Indian cress (Tropaeolum majus L.) has been consumed in salad or soup for decades, but its odor's detailed molecular composition is still unknown. Here we report on the study of the odorant profile and odor-impact compounds of Indian cress absolute by GC-olfactometry/vocabulary-intensity-duration of elementary odors by sniffing...
Uploaded on: December 4, 2022 -
2018 (v1)Journal article
Living organisms on the Earth almost exclusively use l-amino acids for the molecular architecture of proteins. The biological occurrence of d-amino acids is rare, although their functions in various organisms are being gradually understood. A possible explanation for the origin of biomolecular homochirality is the delivery of enantioenriched...
Uploaded on: December 4, 2022 -
April 13, 2010 (v1)Publication
This paper reports on the analysis of Indian cress absolute (Tropaeolum majus L.). Indian cress is an edible cress species that belongs to the Brassicale order. Its absolute, obtained by extraction of the plant with a non-polar solvent (concrete) followed by treatment with ethanol, has never been studied. It was analyzed by GC-MS and GC-O in...
Uploaded on: December 4, 2022 -
January 26, 2022 (v1)Journal article
Life on Earth employs chiral amino acids in stereochemical L-form, but the cause of molecular symmetry breaking remains unknown. Chiroptical properties of amino acidsexpressed in circular dichroism (CD)have been previously investigated in solid and solution phase. However, both environments distort the intrinsic charge distribution associated...
Uploaded on: December 3, 2022 -
November 18, 2022 (v1)Journal article
Abstract Homochirality is a fundamental feature of all known forms of life, maintaining biomolecules (amino-acids, proteins, sugars, nucleic acids) in one specific chiral form. While this condition is central to biology, the mechanisms by which the adverse accumulation of non- l- α-amino-acids in proteins lead to pathophysiological consequences...
Uploaded on: December 3, 2022