Natural substances extracted from lichens and boldo tree were tested in vivo and in vitro as possible UV-light filters. The protection factors were compared with that found for the references: Nivea sun Spray LSF 5, octylmethoxycinnamate (OMC) and 4-tert.-butyl-4'-methoxy dibenzoylmethane (BM-DBM). The stability of the single compounds was studied through UV-Vis spectroscopy. Usnic acid resulted to be the best UVB filter, with an in vivo protection factor similar to Nivea sun Spray LSF 5. Most of the single compounds studied in vitro resulted to have higher or similar filtering power than octylmethoxycinnamate. The protection factors as well as the good UV-light absorption of their photo-products suggest that these natural substances may be useful as new filters in sun-screen preparations.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s1011-1344(02)00362-7 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effectiveness of Fenugreek as an Adjuvant in the Management of Oral Potentially Malignant Disorders: A Randomized Controlled Trial.
J Contemp Dent Pract
October 2024
Department of Public Health Dentistry, Tamil Nadu Government Dental College and Hospital, Chennai, Tamil Nadu, India, Orcid: https://orcid.org/0000-0002-5876-5458.
Aim: This study aimed to evaluate the effectiveness of fenugreek as an adjuvant in managing oral potentially malignant disorders (OPMDs), specifically leukoplakia, lichen planus, and oral submucous fibrosis (OSMF).
Materials And Methods: Twenty-one participants prediagnosed with OPMDs were randomly divided into a study group (SG) and a control group (CG), with 10 participants in SG and 11 in CG, respectively. The SG received 2 gm of fenugreek as an adjuvant with standard systemic treatments tailored to the respective lesions: intralesional injection of vitamin A 1,00,000 IU (Aquasol A) and topical application of triamcinolone acetonide 0.
The biodiversity of ice-free Antarctica database.
Ecology
January 2025
Securing Antarctica's Environmental Future, School of Biological Sciences, Monash University, Melbourne, Victoria, Australia.
Antarctica is one of Earth's most untouched, inhospitable, and poorly known regions. Although knowledge of its biodiversity has increased over recent decades, a diverse, wide-ranging, and spatially explicit compilation of the biodiversity that inhabits Antarctica's permanently ice-free areas is unavailable. This absence hinders both Antarctic biodiversity research and the integration of Antarctica in global biodiversity-related studies.
View Article and Find Full Text PDFBiological activities of lichen extracts and UHPLC-ESI-QTOF-MS analysis of their secondary metabolites.
Front Pharmacol
January 2025
Instituto de Farmacia, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile.
This research was designed to investigate the metabolite profiling, phenolics content, and the trypanocidal, nematicidal, antibacterial, antifungal, and free radical scavenging properties of Motyka. The air-dried material was extracted successively with dichloromethane and methanol (UlMeOH). Two phases were obtained from the extract with dichloromethane, one soluble in methanol (UlDCM-s) and the other insoluble (UlDCM-i).
View Article and Find Full Text PDFA roadmap to sustainable management of commercial medicinal and aromatic plants, fungi, and lichens in Nepal.
Conserv Biol
January 2025
Department of Food and Resource Economics, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark.
Thousands of plants, fungi, and lichen species are traded every year. Although sustainable use is critical for livelihoods and biodiversity conservation, insufficient data prevent detailed sustainability assessments for most species. How can the sustainability of trade in such data-deficient species be enhanced? We considered a country-level example of 300 medicinal and aromatic plant, fungus, and lichen species traded in tens of thousands of tons worth tens of millions of US dollars in and from Nepal annually.
View Article and Find Full Text PDFConcurrent management of vitiligo and acquired disorders of hyperpigmentation: a comprehensive literature review and current practice gaps.
Int J Dermatol
January 2025
Division of Photobiology and Photomedicine, Department of Dermatology, Henry Ford Health, Detroit, MI, USA.
Few studies discuss the co-management of vitiligo and acquired hyperpigmentation disorders (AHD) such as melasma, erythema dyschromicum perstans, post-inflammatory hyperpigmentation, drug-induced hyperpigmentation, and lichen planus pigmentosus. This review discusses clinical studies examining co-management strategies and identifies current practice gaps. Dermatology Life Quality Index scores are higher in individuals with vitiligo or melasma.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!