Results 41 to 50 of about 495 (140)

Advances in organic UV filters for sunscreens over the past decade

Photochemistry and Photobiology, EarlyView.
Highlighted organic UV filter frameworks that have been described for sunscreens over the past decade divided into three groups: derivatives of or inspired by approved organic UV filters, natural product‐based compounds, and miscellaneous. Abstract Ultraviolet (UV) radiation is a major environmental factor in photoaging, erythema, and skin cancer ...
Gabriela Zanella Marcon, Maria Carolina Theisen, Andressa Motta Castro, Giovana Jones Radke, Fernando Fumagalli   +4 more
wiley   +1 more source

Efficient Extraction and Antioxidant Capacity of Mycosporine-Like Amino Acids from Red Alga Dulse Palmaria palmata in Japan

Marine Drugs, 2020
Mycosporine-like amino acids (MAAs) are the ultraviolet (UV)-absorbable compounds, which are naturally produced by cyanobacteria and algae. Not only these algae but also marine organisms utilize MAAs to protect their DNA from UV-induced damage.
Yuki Nishida, Yuya Kumagai, Shunta Michiba, Hajime Yasui, Hideki Kishimura   +4 more
doaj   +1 more source

A Novel HILIC‐UPLC‐DAD‐MS/MS Method for the Analysis of Mycosporine‐Like Amino Acids and Their Quantification in Diverse Algae

ELECTROPHORESIS, Volume 47, Issue 7, Page 620-628, July 2026.
The separation of selected mycosporine‐like amino acids and two biosynthetic precursors, in total 13 compounds, by HILIC‐UPLC is described for the first time. With an analysis time of only 5 min, it surpasses all currently known methods for analysis of these promising natural products.
Armin Oberosler, Anastasiia Fedorova, Ignacio Zegri, Fabian Hammerle, Michael Zwerger, Thomas Werner, Markus Ganzera   +6 more
wiley   +1 more source

Photoprotective responses of three intertidal Antarctic macroalgae to short-term temperature stress

Frontiers in Marine Science, 2023
The Antarctic Peninsula is experiencing one of the highest warming rates globally. In polar regions, macroalgae thrive under extreme environmental conditions, which could worsen because of future climate change scenarios, including increased ultraviolet ...
Claudio A. Sáez, Claudio A. Sáez, Claudio A. Sáez, Macarena Troncoso, Macarena Troncoso, Camilo Navarrete, Camilo Navarrete, Fernanda Rodríguez-Rojas, Fernanda Rodríguez-Rojas, Nelso Navarro, Nelso Navarro, Andrés Trabal, Céline Lavergne, Céline Lavergne, Diego Pardo, Murray T. Brown, Iván Gómez, Iván Gómez, Félix L. Figueroa, Paula S. M. Celis-Plá, Paula S. M. Celis-Plá   +20 more
doaj   +1 more source

Exploring natural sunscreens: UVB protection and antioxidant properties in gadusol‐rich fish roes extracts

Photochemistry and Photobiology, Volume 102, Issue 4, Page 877-888, July/August 2026.
Gadusol‐rich extracts provide effective UVB protection and antioxidant activity in HaCaT cells and C. elegans, highlighting their potential as natural photochemoprotective agents for pharmaceutical and cosmetic applications. It also demonstrates remarkable in vitro antioxidant capacity and thermal stability over time.
Rocío Isla Naveira, Gabriela Hollmann, José María Monserrat, Ana Paula S. Votto, Julie Medeiros da Silveira, Andressa Mai Matsumoto, Lais Zortéa, Andy Joel Taipe Huisa, Agueda E. Massa, M. Sandra Churio   +9 more
wiley   +1 more source

ISOLATION AND STRUCTURE OF A 334 NM UV-ABSORBING SUBSTANCE, PORPHYRA-334 FROM THE RED ALGA PORPHYRA TENERA KJELLMAN [PDF]

Chemistry Letters, 1979
Abstract A new amino acid with a maximum at 334 nm, supposed to be biogenetically related to the characteristic UV-absorbing compounds from the zoanthid Palythoa tuberculosa, has been isolated from Porphyra tenera Kjellman and its structure determined.
Satoshi Takano, Atsushi Nakanishi, Daisuke Uemura, Yoshimasa Hirata   +3 more
openaire   +1 more source

Distribution and Abundance of MAAs in 33 Species of Microalgae across 13 Classes

Marine Drugs, 2010
We provide a direct comparison of the distribution and abundance of mycosporine-like amino acids (MAAs) in a diverse range of microalgal cultures (33 species across 13 classes) grown without supplementary ultraviolet radiation (UV).
Carole Anne Llewellyn, Ruth Louise Airs
doaj   +1 more source

Effect of sun screen utilizing Porphyra-334 derived from Ocean Algae for skin protection

Journal of the Korea Academia-Industrial cooperation Society, 2014
광노화의 주요 요인인 자외선으로부터 피부를 보호하는 것은 피부노화를 막는 중요한 해결책 중 하나이다. 이를 위해 자연친화적 친환경적인 다양한 형태의 소재개발이 필요한 실정이다. 이에 본 연구는 미세조류(Chlamydomonas hedleyi.)로부터 Mycosporine-like amino acid (MAA)를 분리 정제 하여 인간 피부세포에서 UV protection 효과를 확인하였다. MAAs 중 porphyra-334를 분리하여 피부세포에서 UV protection 및 항염 효능을 시험하였고 그 결과 porphyra-334가 UV로부터 피부세포를 보호하여 cell viability가 약 26% 정도 증가하였고 COX-2 ...
Moon Jin Cho, Hae Soo Jung, Mi Young Song, Hyo Hyun Seo, Atul Kulkarni, Seung Suk Suh, Taek Kyun Lee, Sang Hyun Moh   +7 more
openaire   +2 more sources

Porphyra sensu lato Species as Source for Biological UV Photoprotectors and Antioxidants to Develop Cosmeceutical Products

Phycology
Porphyra sensu lato is a promising source of natural photoprotective and antioxidant compounds for cosmeceutical applications. This study evaluated the geographical and temporal variability of bioactive compounds in Porphyra and Pyropia spp.
Débora Tomazi Pereira, Julia Vega, José Bonomi Barufi, Nathalie Korbee, Félix L. Figueroa   +4 more
doaj   +1 more source

Quantitative and Qualitative HPLC Analysis of Mycosporine-Like Amino Acids Extracted in Distilled Water for Cosmetical Uses in Four Rhodophyta

Marine Drugs, 2019
Mycosporine-like amino acids (MAAs) have gained considerable attention as highly active photoprotective candidates for human sunscreens. However, more studies are necessary to evaluate the extraction efficiencies of these metabolites in cosmetic ...
Patricia Chaves-Peña, Francisca de la Coba, Felix L. Figueroa, Nathalie Korbee   +3 more
doaj   +1 more source