Consulta: creatorFacets:"Hardouin, Kevin"
Registros recuperados: 2
Data/hora: 15/06/2024 08:15:15

Chemical characterization and photoprotective activity measurement of extracts from the red macroalga Solieria chordalis
Provedor de dados: 5
Autores: Bedoux, Gilles; Hardouin, Kevin; Marty, Christel; Taupin, Laure; Vandanjon, Laurent; Bourgougnon, Nathalie.
The photoadaptive responses of macroalgal communities to abiotic stresses have been studied, and a number of UV-absorbing molecules have been identified. Among these compounds, photoprotective compounds such as mycosporine-like amino acids and carotenoids have been isolated from various red macroalgal species. However, several substances still need to be characterized. We describe the preparation of photoprotective extracts obtained from Solieria chordalis. Two solvents, 2-octyl dodecanol and octyldodecyl ester of L-pyrrolidone carboxylic acid, were selected based on their cosmetic functions for performing an ultrasound-assisted extraction. The efficiency of extraction was monitored by spectrophotometry and in vitro photoprotective activity measurements....
Tipo: Text
Palavras-chave: Mycosporine-like amino acid; Palythenic acid; Photoprotective activity; Solieria chordalis.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00213/32376/30834.pdf

Enzyme-assisted extraction (EAE) for the production of antiviral and antioxidant extracts from the green seaweed Ulva armoricana (Ulvales, Ulvophyceae)
Provedor de dados: 5
Autores: Hardouin, Kevin; Bedoux, Gilles; Burlot, Anne-sophie; Donnay-moreno, Claire; Berge, Jean-pascal; Nyvall-collen, Pi; Bourgougnon, Nathalie.
In order to develop innovative methods for the production of bioactive extracts with potential health benefits, enzyme-assisted extraction has been applied for the bioconversion of Ulva armoricana (Ulvales, Ulvophyceae). The extraction yields, chemical composition, the antioxidant and antiviral activities were determined to assess the efficiency of six commercial enzymatic preparations. Endo-protease treatments significantly increased the extraction yields compared to the control. The organic matter, neutral sugar and protein contents were increased in all extracts compared to an extraction with water, up to 2.0-fold, 2.7-fold and 1.75-fold, respectively. The samples prepared by a multiple-mix of glycosyl-hydrolases and an exo-β-1,3(4)-glucanase revealed...
Tipo: Text
Palavras-chave: Ulvan; Antiviral activity; Carbohydrate; Endo-protease; Bioconversion; Biorefinery.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00321/43187/45542.pdf