8 documents found, page 1 of 1
The global EPTO database: Worldwide occurrences of aquatic insects
Grigoropoulou, Afroditi; Hamid, Suhaila Ab; Acosta, Raúl; Akindele, Emmanuel Olusegun; Al‐Shami, Salman A.; Altermatt, Florian; Amatulli, GiuseppeMotivation: Aquatic insects comprise 64% of freshwater animal diversity and are widely used as bioindicators to assess water quality impairment and freshwater ecosystem health, as well as to test ecological hypotheses. Despite their importance, a comprehensive, global database of aquatic insect occurrences for mapping freshwater biodiversity in macroecological studies and applied freshwater research is missing....
New aspects of anthocyanin complexation. Intramolecular copigmentation as a mea...
Figueiredo, Paulo; Elhabiri, Mourad; Toki, Kenjiro; Saito, Nairo; Dangles, Olivier; Brouillard, RaymondTwo series of structurally related anthocyanins, extracted from the blue flowers of Evolvulus pilosus cv. Blue Daze and from the blue-purple flowers of Eichhornia crassipes, exhibit remarkable colour stabilities in aqueous solution at mildly acidic pH values. All the pigments possess the same chromophore (delphinidin), but a different pattern of glycosylation and acylation. Moreover, one of the pigments has an ...
3′‐(β‐D‐Glycopyranosyloxy)flavylium Ions: Synthesis and investigation of their ...
El Hajji, Hakima; Dangles, Olivier; Figueiredo, Paulo; Brouillard, RaymondThis work describes a straightforward synthesis of two 3′‐(β‐D‐glycopyranosyloxy)flavylium ions thought to be good models of natural anthocyanins (pigments). For both pigments and for the non‐glycosylated flavylium ion taken as a reference, H2O addition and proton‐transfer reactions as well as formation of molecular complexes with chlorogenic acid and caffeine (copigmentation) are quantitatively investigated in...
Molecular Interactions of Phenolic Compounds in Relation to the Colour of Fruit...
Brouillard, Raymond; Figueiredo, Paulo; Elhabiri, Mourad; Dangles, OlivierThree large families of pigments give colour to plants: chlorophylls, carotenoids and flavonoids (Britton, 1983). The two latter are seen by humans on the green background provided by the chlorophylls. Carotenoids and flavonoids are widespread in fruit, flower and vegetable tissues. Flavonoids belong to a larger group of natural organic plant compounds, the polyphenols. Good recent introductions to the biochemi...
A comparative analysis reveals weak relationships between ecological factors an...
Heino, Jani; Melo, Adriano S.; Bini, Luis Mauricio; Altermatt, Florian; Al-Shami, Salman A.; Angeler, David G.; Bonada, Nuria; Brand, CeciliaMade available in DSpace on 2015-10-21T13:13:04Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-03-01. Added 1 bitstream(s) on 2015-10-22T09:52:00Z : No. of bitstreams: 1 WOS000351458500010.pdf: 1109708 bytes, checksum: 67b46d77c556852b6b2a5bf0a606d9e1 (MD5); Academy of Finland; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); FRGS of Ministry of Higher Education, Malaysia; Spanish M...
Simulating Population Genetics of Pathogen Vectors in Changing Landscapes: Guid...
Rebaudo, Francois; Costa, Jane; Almeida, Carlos E. [UNESP]; Silvain, Jean-Francois; Harry, Myriam; Dangles, OlivierMade available in DSpace on 2015-03-18T15:56:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-08-01Bitstream added on 2015-03-18T16:28:31Z : No. of bitstreams: 1 WOS000341574700036.pdf: 1153845 bytes, checksum: cb54fba522a716053b978ee7396977f2 (MD5); Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); French Agence Nationale de la Recherche; Background: Understanding the mechanisms that infl...
3’-(beta-D-Glycopyranosyloxy)flavylium Ions: Synthesis and Investigation of The...
El Hajji, Hakima; Dangles, Olivier; Figueiredo, Paulo; Brouillard, RaymondThis work describes a straightforward synthesis of two 3’-(,fl-~-glycopyranosyloxy)flavyliuimo ns thought to be good models of natural anthocyanins (pigments). For both pigments and for the non-glycosylated flavylium ion taken as a reference, H,O addition and proton-transfer reactions as well as formation of molecular complexes with chlorogenic acid and caffeine (copigmentation) are quantitatively investigated ...
NEW ASPECTS OF ANTHOCYANIN COMPLEXATION. INTRAMOLECULAR COPIGMENTATION AS A MEA...
Figueiredo, Paulo; Elhabiri, Mourad; Toki, Kenjiro; Saito, Norio; Dangles, Olivier; Brouillard, RaymondTwo series of structurally related anthocyanins, extracted from the blue flowers of Evolvulus pilosus cv. Blue Daze and from the blue-purple flowers of Eichhornia crassipes, exhibit remarkable colour stabilities in aqueous solution at mildly acidic pH values. All the pigments possess the same chromophore (delphinidin), but a different pattern of glycosylation and acylation. Moreover, one of the pigments has an ...