Article
Plant Sciences
Natalia Cmikova, Lucia Galovicova, Michal Miskeje, Petra Borotova, Maciej Kluz, Miroslava Kacaniova
Summary: The aim of this research was to evaluate the antioxidant and antimicrobial activity of seaweed extracts, as well as to determine the chemical elements and heavy metals present. The results showed that kombu and arame exhibited the highest antioxidant activity, while the antimicrobial activity varied among different microorganisms. Additionally, arsenic, cadmium, and aluminum were found in the seaweed samples.
Article
Materials Science, Ceramics
Zhaojun Qi, Sen Wang, Yan Li, Lifeng Wang, Lin Zhao, Qiang Ge, Jin Zhong Zhang
Summary: The novel free radical scavenger ML-Ti3C2Tx MXene exhibits high scavenging efficiency due to its intrinsic reducing property, rather than hydrogen donation ability from surface functional groups. The observed scavenging activity is attributed to the reducing property of ML-Ti3C2Tx, as compared to other materials.
CERAMICS INTERNATIONAL
(2021)
Article
Biochemistry & Molecular Biology
Christchellyn Klegin, Eduardo Miranda Ethur, Barbara Buhl, Ana Caroline Giacomin, Jucara Bordin, Neusa Fernandes de Moura, Matheus Henrique Oliveira de Sousa
Summary: The present study aimed to examine the phenolic content and evaluate the antimicrobial and antioxidant potential of ethanol extracts from the moss species Phyllogonium viride Brid. The results showed that P. viride extract displayed potent antimicrobial activity against various pathogenic bacteria and fungi. However, its antioxidant activity was considered weak. Analysis of the phenolic content revealed a wide range of compounds, with Kaempferol as the major compound. This study suggests that P. viride extract has promising potential as a natural antimicrobial agent.
CHEMISTRY & BIODIVERSITY
(2023)
Article
Food Science & Technology
Pattarin Supanivatin, Aluck Thipayarat, Suwit Siriwattanayotin, Paweena Ekkaphan, Anat Deepatana, Jakrapop Wongwiwat
Summary: This study investigated the extraction of antioxidants and antibacterial substances from Robusta-roasted coffee using different extraction techniques. The results showed that HCFC-22 extraction had the highest yield, while HFC-134a extraction exhibited the highest antioxidant potential. Room-temperature batch extraction yielded slightly higher amounts of extracts with higher antioxidant potential compared to other methods. The extracts obtained using SCCO2 extraction had similar yield and antioxidant potential to those obtained using HFC-134a and HCFC-22 extractions.
Article
Chemistry, Multidisciplinary
Eleni Kakouri, Dimitra Daferera, Panayiotis Trigas, Despina Charalambous, Maria Pantelidou, Petros A. Tarantilis, Charalabos D. Kanakis
Summary: Hypericum perforatum, an herb with a long history of use, has over-the-counter treatment options for depression. The genus has around 500 species, with antimicrobial resistance becoming a concern as available treatment options become less effective. In this study, nine Hypericum species were examined for their antimicrobial activity and phenolic and flavonoid content.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Applied
Francesca Annunziata, Martina L. Contente, Valentina Anzi, Silvia Donzella, Paola Conti, Francesco Molinari, Piera Anna Martino, Gabriele Meroni, Valerio Massimo Sora, Lucia Tamborini, Andrea Pinto
Summary: This study synthesized a collection of nature-inspired lipophilic phenolic esters using immobilized lipase in cyclopentyl methyl ether. The obtained compounds showed enhanced lipophilicity compared to the parent non-esterified compounds, making them potential additives in the food industry.
Article
Food Science & Technology
Aurora Silva, Carla Rodrigues, Paula Garcia-Oliveira, Catarina Lourenco-Lopes, Sofia A. Silva, Pascual Garcia-Perez, Ana P. Carvalho, Valentina F. Domingues, M. Fatima Barroso, Cristina Delerue-Matos, Jesus Simal-Gandara, Miguel A. Prieto
Summary: Algae are a promising source of bioactive compounds, with ethanolic extracts showing highest extraction yield and ethyl acetate extracts with highest TPC and FRAP values. The antioxidant and antimicrobial activities varied depending on the solvent and algal species, with Ascophyllum nodosum and Bifurcaria bifurcata showing promising results.
Review
Biochemistry & Molecular Biology
Nuri Gueven, Pranathi Ravishankar, Rajaraman Eri, Emma Rybalka
Summary: Idebenone is widely described as an antioxidant drug, but there is a significant discrepancy between its pharmacokinetics and achievable tissue levels in target tissues, casting doubt on our current understanding. A new framework has been proposed based on recent discoveries to explain its mode of action, providing a rational approach for testing its effects in novel indications.
Article
Chemistry, Multidisciplinary
Qin-ying Li, Xu Yu, Xi Li, Li-na Bao, Yu Zhang, Shi-lin Wang, Ming Jiang, Kun Huang, Li Xu
Summary: In this study, three carbon dots (CDs) derived from Congo red were successfully synthesized and demonstrated the potential for diagnosis and treatment of protein aggregation diseases. Among them, citric acid-derived CDs showed the most outstanding performance, especially in cytoprotection against Alzheimer's disease-related proteins. This study opens a new pathway for protein disease research.
Article
Food Science & Technology
Mehdi Akbari, Seyed Hadi Razavi, Faramarz Khodaiyan, Jesus Blesa, Maria J. Esteve
Summary: This study evaluated the potential of solid-state fermentation with Lactobacillus reuteri and Lactobacillus plantarum for improving phenolic compounds and antioxidant activity in corn bran. The results showed that fermentation significantly increased the total phenolic content and antioxidant activity of the fermented samples. It also increased the concentration of free phenolic acids. Therefore, solid-state fermentation is an effective method for enhancing phenolic compounds and antioxidant activity.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Organic
William H. Garcia-Santos, Martha C. Mayorquin-Torres, Mauricio Maldonado-Dominguez, Omar N. Medina-Campos, Jose Pedraza-Chaverri, Martin A. Iglesias-Arteaga
Summary: In this study, it was discovered that a Pd-catalyzed three-component reaction using 2,5-dihydroxysalicylaldehyde resulted in a mixture of chroman ketal and spiroketal. The selectivity of the reaction was found to be governed by the rate of formation of the o-quinone methide and the isomerization of the initially produced exocyclic enol ether.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Applied
Fengming Ma, Shihao Zhang, Pu Li, Bingxin Sun, Yufeng Xu, Dongbing Tao, Haitian Zhao, Shiwen Cui, Ruiyin Zhu, Baiqing Zhang
Summary: This study investigated the role of active species in solution plasma process degradation and found that different radical scavengers can adjust the degradation effect. Additionally, physical effects may also contribute to the degradation treatment.
CARBOHYDRATE POLYMERS
(2021)
Article
Pharmacology & Pharmacy
Malgorzata Kozyra, Anna Biernasiuk, Magdalena Wiktor, Wirginia Kukula-Koch, Anna Malm
Summary: A comparative analysis was conducted on the flavonoids and phenolic acids composition in six species of Monarda from the Lamiaceae family. The results showed that these plants exhibited potential antioxidant and antimicrobial effects, making them potential sources of natural antioxidants and antimicrobial agents.
Article
Biochemistry & Molecular Biology
Vida Simat, Danijela Skroza, Giulia Tabanelli, Martina Cagalj, Federica Pasini, Ana Maria Gomez-Caravaca, Carmen Fernandez-Fernandez, Meta Sternisa, Sonja Smole Mozina, Yesim Ozogul, Ivana Generalic Mekinic
Summary: This study investigated the phenolic profiles, antioxidant, and antimicrobial activities of hydroethanolic olive leaf extracts from six Mediterranean olive cultivars. The results showed variations in phenolic levels among the different cultivars, with the Oblica sample having the highest phenolic content and strongest antiradical and reducing activity. Oleuropein, hydroxytyrosol, and other compounds were detected as the main constituents. While the extracts exhibited relatively high antioxidant activity, they showed weak inhibitory effects against certain bacteria strains.
Article
Chemistry, Physical
Swarnadeep Biswas, Pradeep Kumar Shukla
Summary: In this study, the scavenging activity of curcumin towards methyl and ethyl radicals was investigated using density functional theory calculations. The calculations showed that curcumin can scavenge methyl radicals through radical adduct formation and hydrogen atom transfer mechanisms, with radical adduct formation being the preferred mechanism. It was also found that curcumin can scavenge methyl radicals more efficiently than ethyl radicals through radical adduct formation.
MOLECULAR SIMULATION
(2023)
