Laurence Coiffard

ORCID: 0000-0001-6233-0409
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About
Contact & Profiles
Research Areas
  • Skin Protection and Aging
  • Photodynamic Therapy Research Studies
  • Olfactory and Sensory Function Studies
  • Seaweed-derived Bioactive Compounds
  • Contact Dermatitis and Allergies
  • Algal biology and biofuel production
  • Bee Products Chemical Analysis
  • Antioxidant Activity and Oxidative Stress
  • Indoor Air Quality and Microbial Exposure
  • melanin and skin pigmentation
  • Phytochemicals and Antioxidant Activities
  • Analytical Chemistry and Chromatography
  • Medical and Biological Ozone Research
  • Aquaculture Nutrition and Growth
  • Animal testing and alternatives
  • Analytical Methods in Pharmaceuticals
  • Pharmaceutical and Antibiotic Environmental Impacts
  • Historical and Scientific Studies
  • Essential Oils and Antimicrobial Activity
  • Protein Hydrolysis and Bioactive Peptides
  • Plant chemical constituents analysis
  • Air Quality and Health Impacts
  • Dermatology and Skin Diseases
  • Phytochemistry Medicinal Plant Applications
  • Dyeing and Modifying Textile Fibers

Nantes Université
2015-2024

Université de Bretagne Occidentale
2024

Laboratoire de Physique des Interfaces et des Couches Minces
2014-2017

Centre National de la Recherche Scientifique
2012-2014

IMT Atlantique
2008-2012

Institut Génétique Nantes Atlantique
1998

We used the neutral red test, MTT assay and lactate dehydrogenase (LDH) release to compare potential cytotoxicity of six surfactants belonging different classes—three non-ionic (Triton ×100, octylphenoxypolyethoxy alcohol, from Orion; Tween 60, polyoxyethylene (20) sorbitan monostearate, ICI Speciality Chemicals; 80, monolaurate, Labosi), two anionic (Texapon K1298, sodium lauryl sulphate, Henkel; Texapon N40, laurylether Henkel) one cationic surfactant (benzethonium chloride, Siber...

10.1002/(sici)1099-1263(199905/06)19:3<163::aid-jat561>3.0.co;2-h article EN Journal of Applied Toxicology 1999-05-01

Depigmentation and skin lightening products, which have been in use for ages Asian countries where whiteness is a major esthetic criterion, are now also highly valued by Western populations, who expose themselves excessively to the sun develop spots as consequence. After discussing various possible mechanisms of depigmentation, different molecules that can be used well status products containing them will presented. Hydroquinone derivatives thereof, retinoids, alpha- beta-hydroxy acids,...

10.3390/cosmetics3030027 article EN cc-by Cosmetics 2016-07-25

Given that flavonoids are known for their ultraviolet (UV)B photoprotective properties in plants contain them, we chose to study quercetin (1) and rutin (2) as agents could potentially be used sunscreen products. These two substances proved behave similar ways. When incorporated oil-in-water emulsions, at a concentration of 10% (w/w), 1 2 give sun protection factor (SPF) values homosalate, standard substance. also provided non-negligible level photoprotection the UVA range. association with...

10.1021/np7007297 article EN Journal of Natural Products 2008-05-31

Marine resources represent an interesting source of active ingredients for the cosmetics industry. Algae (macro and micro) are rich in proteins, amino acids, carbohydrates, vitamins (A, B, C) oligo-elements such as copper, iron zinc. All those principles play roles hydration, firming, slimming, shine protection. organisms inhabit a wide spectrum habitats. Photo-protective compounds can be obtained from subjected to strong light radiation, tropical systems or shallow water. In same way,...

10.3390/cosmetics4030035 article EN cc-by Cosmetics 2017-09-15

Brown seaweeds are attracting attention due to their richness in bioactive compounds, particular, phlorotannins. We present here a case study of two Fucales, Ascophyllum nodosum and Halidrys siliquosa, sustainably collected, produce active polyphenols for the cosmetics sector. Phenolic contents crude extracts, obtained by Accelerated Solvent Extraction (ASE), were more elevated H. siliquosa at 100.05 mg/g dry weight (DW) than A. (29.51 DW), considering 3 cycles with cell inversion. The...

10.3390/md22030112 article EN cc-by Marine Drugs 2024-02-28

To explain observed differences during SPF determination using either an in vivo or vitro method, we hypothesized on the presence of ingredients having anti-inflammatory properties.To research our hypothesis, studied 21 UV filters both available market and authorized by European regulations subjected these to phorbol-myristate-acetate test mice. We then catalogued 13 demonstrating a significant effect with edema inhibition percentages more than 70%. The are: diethylhexyl butamido triazone...

10.1371/journal.pone.0046187 article EN cc-by PLoS ONE 2012-12-20

Per- and polyfluoroalkyl substances (PFAS) form a vast family comprising more than 4700 synthetic compounds. Their molecules contain terminal functional group hydrophobic carbon tail (alkyl group) at which the hydrogen atoms are totally (in case of perfluorinated compounds) or partially polyfluorinated replaced by fluorine atoms. Due to very specific properties their structure, they have been used in range applications over last 70 years. These considered be concern for environment. effects...

10.1016/j.fct.2024.114625 article EN cc-by Food and Chemical Toxicology 2024-04-04
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