Results 31 to 40 of about 2,182 (142)

Unraveling Lignin's Color Puzzle: From Chromophore Origins to Advanced Decolorization Strategies

Aggregate, Volume 7, Issue 1, January 2026.
This review provides a comprehensive systematic analysis of the research advancements in lignin color formation mechanisms and decolorization techniques, specifically focusing on three principal approaches: hydroxyl shielding, biomass fractionation, and physical methods. It highlights the systematic research approach of the review toward decolorization
Lizhen Huang, Zhuotong Wu, Li Shuai
wiley   +1 more source

Identification of Key Active‐Site Positions Controlling the Chemoselectivity of Aspergillus Brasiliensis Unspecific Peroxygenase

ChemBioChem, Volume 26, Issue 10, May 27, 2025.
Unspecific peroxygenase (UPO) from Aspergillus brasiliensis AbrUPO catalyzes the aromatic hydroxylation of substituted benzenes. By integrating structural elements from well‐characterized UPOs in AbrUPO variants, position 186 was identified as a critical determinant of enzyme chemoselectivity.
Fabian Schmitz, Maike Hoffrogge, Katja Koschorreck, Yasuhisa Fukuta, Alessandra Raffaele, Florian Tieves, Thomas Hilberath, Frank Hollmann, Vlada B. Urlacher   +8 more
wiley   +1 more source

Natural pigments derived from plants and microorganisms: classification, biosynthesis, and applications

Plant Biotechnology Journal, Volume 23, Issue 2, Page 592-614, February 2025.
Summary Pigments, as coloured secondary metabolites, endow the world with a rich palette of colours. They primarily originate from plants and microorganisms and play crucial roles in their survival and adaptation processes. In this article, we categorize pigments based on their chemical structure into flavonoids, carotenoids, pyrroles, quinones ...
Qian Tang, Zhibo Li, Ningxin Chen, Xiaozhou Luo, Qiao Zhao   +4 more
wiley   +1 more source

Antioxidative and Antimelanogenesis Effect of Momordica charantia Methanol Extract

Evidence-Based Complementary and Alternative Medicine, Volume 2019, Issue 1, 2019., 2019
Despite a large number of studies reporting a variety of biological and pharmacological activities of Momordica charantia, its skin protective properties are poorly understood. The present study aimed to explore the skin protective properties of Momordica charantia methanol extract (Mc‐ME) and the underlying mechanism in keratinocytes, fibroblasts, and
Sang Hee Park, Young-Su Yi, Mi-Yeon Kim, Jae Youl Cho, Víctor López   +4 more
wiley   +1 more source

Stability of tryptophan during food processing and storage: 1. Comparative losses of tryptophan, lysine and methionine in different model systems [PDF]

, 2017
1. The stability of tryptophan was evaluated in several different food model systems using a chemical method (high pressure liquid chromatography after alkaline-hydrolysis) and rat assays.
De Weck, D., Finot, P. A., Hurrell, R. F., Liardon, R., Nielsen, Henrik K.   +4 more
core  

Exploring Glutathione and Hypotaurine as Promising Antibrowning Agents: Safer Alternatives to Sulphites for Food and Beverage Preservation—A Concise Review

Journal of Food Processing and Preservation, Volume 2025, Issue 1, 2025.
Oxidative browning poses a significant challenge in maintaining the visual appeal and nutritional quality of fresh‐cut food products and beverages. Traditional sulphites have been widely utilised for browning inhibition; however, concerns regarding their safety and allergenic potential have sparked the exploration of alternative options.
Kabezi Martine, Lucas Paul, Michael Qwarse, James T. Zacharia, Essam Hebishy   +4 more
wiley   +1 more source

Tyrosinase Inhibition and Antimelanogenic Effects of Resorcinol‐Containing Compounds

ChemMedChem, Volume 19, Issue 23, December 2, 2024.
Resorcinol‐based compounds stand out as key inhibitors of tyrosinases (TYR) owing to their phenolic group's interaction with the dicopper centre and their ability to resist TYR‐mediated oxidation. While some well‐known examples are employed in dermatocosmetics and skin‐whitening products, this review covers the broader diversity of scaffolds, including
Morane Beaumet, Leticia M. Lazinski, Marc Maresca, Romain Haudecoeur   +3 more
wiley   +1 more source

Estimation of Enzymatic Activities of Different Species of Mushrooms [PDF]

, 2011
Mushrooms are widely spread saprophytic macro-organisms, belong to class fungi growing on dead organic matter of vegetative origin. They can utilize almost all agricultural wastes as their substrates for their growth and metabolism.
Chandra Mishra , Rahul
core  

Efeito do pH e da temperatura nas atividades da peroxidase e polifenoloxidase do pericarpo de lichia [PDF]

, 2010
After harvesting litchi, the red color of the fruit pericarp is rapidly lost resulting in discoloration and browning during storage and marketing. The loss of the red color is caused by the degradation or loss of stability of anthocyanins.
Finger, Fernando Luiz, Mizobutsi, Gisele Polete, Mota, Wagner Ferreira da, Neves, Ludmila Lafetá de Melo, Puschmann, Rolf, Ribeiro, Rosilene Antônio   +5 more
core   +3 more sources

Genomic basis for skin phenotype and cold adaptation in the extinct Steller’s sea cow [PDF]

, 2021
Steller’s sea cow, an extinct sirenian and one of the largest Quaternary mammals, was described by Georg Steller in 1741 and eradicated by humans within 27 years. Here, we complement Steller’s descriptions with paleogenomic data from 12 individuals.
Baleka, S., Burdin, A., Cassatt-Johnstone, M., Dalén, L., Estes, J., Fritsch, G., Grunewald, S., Hildebrandt, T., Hofreiter, M., Joger, U., Kelso, J., Le Duc, D., Lemke, J., Lin, C., Olsen, R., Rosendahl, W., Rutschmann, S., Schöneberg, T., Shapiro, B., Southon, J., Velluva, A., Wang, M.   +21 more
core   +3 more sources