scholarly journals Optimizing the dispersion of nanoparticulate TiO2-based UV filters in a non-polar medium used in sunscreen formulations – The roles of surfactants and particle coatings

2020 ◽  
Vol 599 ◽  
pp. 124792 ◽  
Author(s):  
Riccardo Catalano ◽  
Armand Masion ◽  
Fabio Ziarelli ◽  
Danielle Slomberg ◽  
Jérôme Laisney ◽  
...  
Keyword(s):  
Uv Filters ◽  
Polar Medium

Fate and distribution of benzotriazole UV filters and stabilizers in environmental compartments from Gran Canaria Island (Spain): A comparison study

2021 ◽  
Vol 756 ◽  
pp. 144086
Author(s):  
Sarah Montesdeoca-Esponda ◽  
María Esther Torres-Padrón ◽  
Zoraida Sosa-Ferrera ◽  
José Juan Santana-Rodríguez
Keyword(s):  
Uv Filters ◽  
Comparison Study ◽  
Gran Canaria ◽  
Environmental Compartments

scholarly journals UV filters used in sunscreens – a lack in current coral protection?

2021 ◽  
Author(s):  
Sascha Pawlowski ◽  
Mareen Moeller ◽  
Ingo B. Miller ◽  
Matthias Y. Kellermann ◽  
Peter J. Schupp ◽  
...  
Keyword(s):  
Uv Filters

scholarly journals Sunscreens: UV filters to protect us: Part 1: Changing regulations and choices for optimal sun protection

2021 ◽  
Vol 7 (1) ◽  
pp. 28-44
Author(s):  
Nina Sabzevari ◽  
Sultan Qiblawi ◽  
Scott A. Norton ◽  
David Fivenson
Keyword(s):  
Sun Protection ◽  
Uv Filters

scholarly journals Development of a sensitive analytical method for the simultaneous analysis of Benzophenone-type UV filters and paraben preservatives in umbilical cord blood

MethodsX ◽  
2021 ◽  
pp. 101307
Author(s):  
Adrià Sunyer-Caldú ◽  
Amelia Peiró ◽  
Marta Díaz ◽  
Lourdes Ibáñez ◽  
Pablo Gago-Ferrero ◽  
...  
Keyword(s):  
Cord Blood ◽  
Umbilical Cord ◽  
Umbilical Cord Blood ◽  
Analytical Method ◽  
Simultaneous Analysis ◽  
Uv Filters

Occurrence of pharmaceuticals and UV filters in swimming pools and spas

2016 ◽  
Vol 23 (14) ◽  
pp. 14431-14441 ◽  
Author(s):  
Yuli Ekowati ◽  
Gianluigi Buttiglieri ◽  
Giuliana Ferrero ◽  
Jennifer Valle-Sistac ◽  
M. Silvía Diaz-Cruz ◽  
...  
Keyword(s):  
Uv Filters ◽  
Swimming Pools

Simulation of sunscreen performance

2015 ◽  
Vol 87 (9-10) ◽  
pp. 937-951 ◽  
Author(s):  
Bernd Herzog ◽  
Uli Osterwalder
Keyword(s):  
Sun Protection ◽  
Simulation Algorithm ◽  
Uv Filters ◽  
Protection Factor ◽  
Stage Of Development ◽  
Screening Performance ◽  
Convenient Approach ◽  
Solar Uv ◽  
Harmful Effects

AbstractSunscreens are used to protect the human skin against harmful effects of solar UV radiation. The most important quantity characterizing sunscreen performance is the sun protection factor (SPF). At the stage of development of new sun protection formulations quick and inexpensive methods for estimation of the UV screening performance are highly desirable. The most convenient approach towards this goal is given by computational simulations. Models for the calculation of the SPF employ the same algorithm as used with in vitro SPF measurements, but replace the transmittance measurement by the calculation of the overall absorbance of the UV filters in an irregular sunscreen film. The simulations require a database with quantitative UV extinction spectra of the relevant UV filters as well as a mathematical description of the film irregularity. The simulation algorithm implies also the consideration of photodegradation properties of the UV filters in the sunscreen composition. Besides using such simulations for designing new sunscreen formulations, the calculations can also support the understanding of sunscreen performance in general.

Lichenic extracts and metabolites as UV filters

2013 ◽  
Vol 120 ◽  
pp. 17-28 ◽  
Author(s):  
Françoise Lohézic-Le Dévéhat ◽  
Béatrice Legouin ◽  
Céline Couteau ◽  
Joël Boustie ◽  
Laurence Coiffard
Keyword(s):  
Uv Filters

Structure of 4,4-Bisphenylsulfonyl-N,N-dimethylbutylamine: Interplay of Intramolecular C–H···N, C–H···O=S, and ?···? Interactions

2009 ◽  
Vol 62 (9) ◽  
pp. 1062 ◽  
Author(s):  
Jiong Ran ◽  
Ming Wah Wong
Keyword(s):  
Molecular Structure ◽  
Hydrogen Bond ◽  
Significant Interaction ◽  
Chemical Shifts ◽  
Intramolecular Interactions ◽  
Methyl Derivative ◽  
Polar Medium ◽  
Conformational Properties ◽  
Density Analysis ◽  
Experimental Findings

Conformations of 4,4-bisphenylsulfonyl-N,N-dimethylbutylamine (BSDBA) were examined by ab initio calculations. Intramolecular C–H···N, C–H···O, and π···π interactions are found to play an important role in governing the conformational properties. This finding is supported by charge density analysis based on the theory of atoms in molecules. The calculated molecular structure and 1H chemical shifts of the methyl derivative (BSTBA) are in excellent agreement with experimental findings. The intramolecular C–H···N hydrogen bond in BSDBA is estimated to have a significant interaction energy of 25 kJ mol–1. The sulfonyl oxygens in BSDBA interact readily with neighbouring methylene, methyl and phenyl hydrogens via C–H···O=S hydrogen bonds. In agreement with experiment, solvent effect calculations indicate that these weaker intramolecular interactions prevail in an aprotic polar medium.

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