, popularly known as 'aroeira-do-sertão', a large tree, with a tall trunk. Belonging to the Anacardiaceae family, it occurs in the 'caatinga' and dry forests of Brazil, from Ceará to the states of Paraná and Mato Grosso do Sul. The present study aimed to analyse the whitening and antioxidant activities of the aqueous extract of the leaves of Myracrodruon urundeuva (AELMU). Inhibition of the tyrosinase enzyme, as well as its copper chelating capacity and antioxidant effect were evaluated. The AELMU (at 2000 µg/mL) showed excellent inhibitory action (83.76%) on tyrosinase by chelating the copper ion while kojic acid at the same concentration inhibited 97.81%. Moreover, the extract displayed important antioxidant activity (inhibited 76,46% of the 2,2-diphenyl-1-picrylhydrazyl radical - DPPH; 49,59% of thiobarbituric acid reactive substances and 51,07% of the hydroxyl radical). Thus, the extract under study is promising for use in cosmetics, given its multifactorial action.
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http://dx.doi.org/10.1080/14786419.2023.2254457 | DOI Listing |
Int J Biol Macromol
January 2025
Sauvage Laboratory for Smart Materials, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China; Research Centre of Printed Flexible Electronics, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China. Electronic address:
In the field of cosmetics, epigallocatechin gallate (EGCG) is highly valued for its multiple effects such as delaying photoaging, whitening, anti-allergy, acne removal, astringency, and moisturizing. However, due to the active chemical properties of EGCG, there are challenges in terms of stability and transdermal absorption, which limits its widespread application in cosmetics. Therefore, we utilized supramolecular modification technology to form supramolecular carboxymethyl chitosan-EGCG-trehalose (CC-EGCG) by combining EGCG with carboxymethyl chitosan and trehalose, enhancing its stability.
View Article and Find Full Text PDFPharmaceuticals (Basel)
December 2024
College of Bee Science and Biomedicine, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Bee pollen, a rich nutritional food, was employed to develop a raw material for skin whitening. The polyphenol profile and antioxidant, antityrosinase, and anti-melanogenesis activities of the ethanol extracts of five species of bee pollens (EEBPs) were determined. The results showed that there were a total of 121 phenolic compounds in these EEBPs.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan.
Little is known about the anti-pigmenting effects of skin-whitening agents on solar lentigos (SLs). To characterize the anti-pigmenting effects of a newly designed derivative ascorbyl glucoside-arginine complex (AGAC) on SLs, lotions with or without 28% AGAC were applied twice daily for 24 weeks in a double-blind half-face study of 27 Japanese females with SLs. The pigmentation scores and skin colors of previously selected SLs on the right and left sides of the faces of the subjects were evaluated using a photo-scale, a color difference meter and a Mexameter.
View Article and Find Full Text PDFAntioxidants (Basel)
December 2024
Guangdong Provincial Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization, Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
Chrysanthemum is a traditional Chinese medicinal herb. Chrysanthemum extracts are rich in bioactive compounds; however, there are few reports evaluating the whitening effects of organic chrysanthemum extracts. This study assessed the antioxidant and whitening effects of organic extracts from the petals of five chrysanthemum cultivars from Guangdong, China.
View Article and Find Full Text PDFPathol Int
January 2025
Department of Tumor Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
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