Buscar
Mostrando ítems 1-10 de 75
UV sunscreens of microbial origin: mycosporines and mycosporinelike aminoacids
(Bentham Science Publishers, 2014-12)
Exposure to ultraviolet radiation (UVR) is harmful to living organisms, causing damage to macromolecules such as DNA, RNA, proteins and lipids. Depending on the wavelength, the injury could be direct or indirect through ...
Short communication: Mycosporine-like amino acids protect natamycin against photodegradation in milk exposed to fluorescent or light-emitting diode light
(2019-06-01)
Natamycin has been used as a natural antimicrobial in dairy products, but the poor light stability of natamycin can limit usefulness in food products. Mycosporine-like amino acids are strong UV absorbers and might be useful ...
Palythine-threonine, a major novel mycosporine-like amino acid (MAA) isolated from the hermatypic coral Pocillopora capitata
(ELSEVIER SCIENCE SA, 2009)
Using a high-resolution reverse-phase liquid chromatography method we found that the tissues of the hermatypic coral Pocillopora capitato (collected in Santiago Bay, Mexico) contain a high diversity of primary and secondary ...
Influence of mycosporine-like amino acids and gadusol on the rheology and Raman spectroscopy of polymer gels
(IOS Press, 2014-11)
BACKGROUND: The amphiphilic nature of polymers allows them to be widely incorporated as carriers in different pharmaceutical applications since they are able to work as vehicles for hydro- or lipo-soluble actives. OBJECTIVE: ...
Diurnal changes in the composition of Mycosporine-like Amino Acids (MAA) in Corallina officinalis
(Referee Gateway, 2006-12)
Thalli of Corallina officinalis Linnaeus were harvested at 1-h intervals during low tide in Barrancas Blancas (Patagonia, Argentina) on clear days to examine diurnal changes of the UV-absorbing mycosporine-like amino acids ...
A Fragmentation study of di-acidic mycosporine-like amino acids in electrospray and nanospray mass spectrometry
(Sociedade Brasileira de Química, 2009)
Two mycosporine (MAAs), containing an extra acid function, were analyzed by nanospray and electrospray ionization tandem mass spectrometry. In contrast to the previous studies it is demonstrated that no significant ...
A theoretical and mass spectrometry study of the fragmentation of mycosporine-like amino acids
(ELSEVIER SCIENCE BV, 2008)
In the present study, the mycosporine-like amino acids (MAAs) were isolated from the marine red alga Gracilaria tenuistipitata and analysed by high-resolution accurate-mass sequential mass spectrometry (MSn). In addition ...
Nitrate reduces the negative effect of UV radiation on photosynthesis and pigmentation in Gracilaria tenuistipitata (Rhodophyta): the photoprotection role of mycosporine-like amino acids
(INT PHYCOLOGICAL SOCLAWRENCE, 2012)
Photoprotection of the agarophyte red alga Gracilaria tenuistipitata against ultraviolet radiation (UVR) was investigated in algae submitted for 1 week to photosynthetically active radiation (PAR, 260 mu mol photons m(-2) ...