Emmanuelle Helloin

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Ovalbumin family contains three proteins with high sequence similarity: ovalbumin, ovalbumin-related protein Y (OVAY), and ovalbumin-related protein X (OVAX). Ovalbumin is the major egg white protein with still undefined function, whereas the biological activity of OVAX and OVAY has not yet been explored. Similar to ovalbumin and OVAY, OVAX belongs to the(More)
Egg defence against bacterial contamination relies on immunoglobulins (IgY) concentrated in the yolk and antimicrobial peptides/proteins predominantly localized in the egg white (EW). Hens contaminated with pathogenic microorganisms export specific IgYs to the egg (adaptative immunity). No evidence of such regulation has been reported for the antimicrobial(More)
An aqueous marine-sulfated polysaccharide (MSP) extract, prepared from the green macroalga Ulva armoricana, was tested as an antibacterial compound against 42 bacterial strains and isolates found in livestock animals. Both Gram-positive and Gram-negative bacteria growths were affected. The most susceptible pathogens were Pasteurella multocida, Mannheimia(More)
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