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Total 2868 results found since Jan 2013.

Molecules, Vol. 28, Pages 5728: Discrimination of Milk Freshness Based on Synchronous Two-Dimensional Visible/Near-Infrared Correlation Spectroscopy Coupled with Chemometrics
heng Jun Li Milk is one of the preferred beverages in modern healthy diets, and its freshness is of great significance for product sales and applications. By combining the two-dimensional (2D) correlation spectroscopy technique and chemometrics, a new method based on visible/near-infrared (Vis/NIR) spectroscopy was proposed to discriminate the freshness of milk. To clarify the relationship be-tween the freshness of milk and the spectra, the changes in the physicochemical indicators of milk during storage were analyzed as well as the Vis/NIR spectra and the 2D-Vis/NIR correlation spectra. The threshold-value method, l...
Source: Molecules - July 28, 2023 Category: Chemistry Authors: Dan Peng Rui Xu Qi Zhou Jinxia Yue Min Su Shaoshuai Zheng Jun Li Tags: Article Source Type: research

Molecules, Vol. 28, Pages 5717: The Garlic Tree of Borneo, Scorodocarpus borneensis (Baill.) Becc. (Olacaceae): Potential Utilization in Pharmaceutical, Nutraceutical, and Functional Cosmetic Industries
Mazdida Sulaiman Scorodocarpus borneensis (Baill.) Becc. is attracting increased attention as a potential commercial medicinal plant product in Southeast Asia. This review summarizes the current knowledge on the taxonomy, habitat, distribution, medicinal uses, natural products, pharmacology, toxicology, and potential utilization of S. borneesis in the pharmaceutical/nutraceutical/functional cosmetic industries. All data in this review were compiled from Google Scholar, PubMed, Science Direct, Web of Science, ChemSpider, PubChem, and a library search from 1866 to 2022. A total of 33 natural products have been identif...
Source: Molecules - July 28, 2023 Category: Chemistry Authors: Christophe Wiart Afsana Amin Shorna Mohammed Rahmatullah Veeranoot Nissapatorn Jaya Seelan Sathya Seelan Homathevi Rahman Nor Azizun Rusdi Nazirah Mustaffa Layane Elbehairy Mazdida Sulaiman Tags: Review Source Type: research

Molecules, Vol. 28, Pages 5694: Hybrid Nanoplatforms Comprising Organic Nanocompartments Encapsulating Inorganic Nanoparticles for Enhanced Drug Delivery and Bioimaging Applications
Zhang Organic and inorganic nanoparticles (NPs) have attracted significant attention due to their unique physico-chemical properties, which have paved the way for their application in numerous fields including diagnostics and therapy. Recently, hybrid nanomaterials consisting of organic nanocompartments (e.g., liposomes, micelles, poly (lactic-co-glycolic acid) NPs, dendrimers, or chitosan NPs) encapsulating inorganic NPs (quantum dots, or NPs made of gold, silver, silica, or magnetic materials) have been researched for usage in vivo as drug-delivery or theranostic agents. These classes of hybrid multi-particulate sys...
Source: Molecules - July 27, 2023 Category: Chemistry Authors: Yanar Carugo Zhang Tags: Review Source Type: research

Molecules, Vol. 28, Pages 5681: Anti-Candida and Anti-Leishmanial Activities of Encapsulated Cinnamomum verum Essential Oil in Chitosan Nanoparticles
id Limam Olfa Tabbene Nanoencapsulation is widely considered as a highly effective strategy to enhance essential oils’ (EO) stability by protecting them from oxidative deterioration and evaporation. The present study aims to optimize and characterize an efficient technique for encapsulating Cinnamomum (C.) verum essential oil into chitosan nanoparticles using response surface methodology (RSM). Moreover, the optimized C. verum EO nanoparticle was investigated for its antibacterial (against Gram-positive and Gram-negative bacteria), antifungal (against Candida albicans), and antiparasitic activity (again...
Source: Molecules - July 27, 2023 Category: Chemistry Authors: Rym Essid Ameni Ayed Kais Djebali Houda Saad Mondher Srasra Yasmine Othmani Nadia Fares Selim Jallouli Islem Abid Monerah Rashed Alothman Ferid Limam Olfa Tabbene Tags: Article Source Type: research

Molecules, Vol. 28, Pages 5653: Plectranthus Species with Anti-Inflammatory and Analgesic Potential: A Systematic Review on Ethnobotanical and Pharmacological Findings
This study identified twelve Plectranthus species indicated for the treatment of different inflammatory conditions, such as wounds, fever, bronchitis, abscess, asthma, hepatitis, labyrinthitis, tonsillitis, and uterine inflammation. The indications for pain conditions included headache, sore throat, heartburn, menstrual cramp, colic, toothache, stomachache, migraine, chest pain, abdominal pain, local pain, labor pain, and recurring pain. Among the listed species, ten plants were found to be used according to traditional knowledge, although only four of them have been experimentally studied. When assessing the methodologica...
Source: Molecules - July 26, 2023 Category: Chemistry Authors: Maysa de Oliveira Barbosa Polrat Wilairatana Giovana Mendes de Lacerda Leite Gyllyandeson de Ara újo Delmondes Lucas Yure Santos da Silva Silvio Caetano Alves J únior Lindaiane Bezerra Rodrigues Dantas Daniel Souza Bezerra Izabel Cristina Santiago Lemos Tags: Systematic Review Source Type: research

Molecules, Vol. 28, Pages 5650: Simultaneous Enhancement of Flame Resistance and Antimicrobial Activity in Epoxy Nanocomposites Containing Phosphorus and Silver-Based Additives
Mihaela Rîmbu The design and manufacture of innovative multifunctional materials possessing superior characteristics, quality and standards, rigorously required for future development of existing or emerging advanced technologies, is of great importance. These materials should have a very low degree of influence (or none) on the environmental and human health. Adjusting the properties of epoxy resins with organophosphorus compounds and silver-containing additives is key to the simultaneous improvement of the flame-resistant and antimicrobial properties of advanced epoxy-based materials. These environmentally friendly...
Source: Molecules - July 26, 2023 Category: Chemistry Authors: T ăchiță Vlad-Bubulac Corneliu Hamciuc Diana Serbezeanu Ana-Maria Macsim Gabriela Lisa Ion Anghel Dana-Maria Preda Yuri Kalvachev Cristina Mihaela R îmbu Tags: Article Source Type: research

Molecules, Vol. 28, Pages 5642: Treatment of Uranium-Contaminated Ground Water Using Adsorption Technology via Novel Mesoporous Silica Nanoparticles
This study synthesized a novel MSN using surface-initiated atom transfer radical polymerization (SI-ATRP) and evaluated its effectiveness for removing uranium from aqueous solutions under different conditions. The particle size was reduced to 150–240 nm to enhance adsorption. Fourier transform infrared characterization and thermogravimetric analysis confirmed successful synthesis and modification. Results showed that the MSN adsorbent was highly effective in removing U, with a removal rate of 85.35% at 120 min. Temperature had a significant impact, with the highest removal rate of 96.7% achieved at 25 &am...
Source: Molecules - July 25, 2023 Category: Chemistry Authors: Abdulmalik S. Alshammari Mohammed S. Almeataq Ahmed A. Basfar Tags: Article Source Type: research

Molecules, Vol. 28, Pages 5633: Excited State Dynamics of Alizarin Red S Nanoparticles in Solution
terreiner Alizarin red S is a sulfonated, water-soluble derivative of alizarin. This work presents femtosecond studies of alizarin red S (ARS) nanoparticles in comparison to ARS in aqueous solution and to alizarin in DMSO. The femtosecond studies cover a probing spectral range of 350–750 nm using different excitation wavelengths, taking into account the variation of the absorption spectra with the pH values of the solvent. Stationary absorption spectra show slight differences between solution and nanoparticles. Excitation at 530 nm results in low and noisy responses, therefore, we additionally recorded tr...
Source: Molecules - July 25, 2023 Category: Chemistry Authors: Pascal Rauthe Kristina Sabljo Maike Kristin Vogelbacher Claus Feldmann Andreas-Neil Unterreiner Tags: Article Source Type: research

Molecules, Vol. 28, Pages 5624: Apitherapy in Post-Ischemic Brain Neurodegeneration of Alzheimer & rsquo;s Disease Proteinopathy: Focus on Honey and Its Flavonoids and Phenolic Acids
Molecules, Vol. 28, Pages 5624: Apitherapy in Post-Ischemic Brain Neurodegeneration of Alzheimer’s Disease Proteinopathy: Focus on Honey and Its Flavonoids and Phenolic Acids Molecules doi: 10.3390/molecules28155624 Authors: Ryszard Pluta Barbara Miziak Stanisław J. Czuczwar Neurodegeneration of the brain after ischemia is a major cause of severe, long-term disability, dementia, and mortality, which is a global problem. These phenomena are attributed to excitotoxicity, changes in the blood–brain barrier, neuroinflammation, oxidative stress, vasoconstriction, cerebral amyloid angiopathy,...
Source: Molecules - July 25, 2023 Category: Chemistry Authors: Ryszard Pluta Barbara Miziak Stanis ław J. Czuczwar Tags: Review Source Type: research

Molecules, Vol. 28, Pages 5587: Extraction, Characterization, and Evaluation of the Cytotoxic Activity of Piperine in Its Isolated form and in Combination with Chemotherapeutics against Gastric Cancer
Brasil André Salim Khayat Gastric cancer is one of the most frequent types of neoplasms worldwide, usually presenting as aggressive and difficult-to-manage tumors. The search for new structures with anticancer potential encompasses a vast research field in which natural products arise as promising alternatives. In this scenario, piperine, an alkaloid of the Piper species, has received attention due to its biological activity, including anticancer attributes. The present work proposes three heating-independent, reliable, low-cost, and selective methods for obtaining piperine from Piper nigrum L. (Black pepper). Elect...
Source: Molecules - July 22, 2023 Category: Chemistry Authors: Ingryd Nayara de Farias Ramos Monique Feitosa da Silva Jefferson Marcio Sanches Lopes Jordy Neves Cruz Fabrine Silva Alves Jos é de Arimatéia Rodrigues do Rego Marcondes Lima da Costa Paulo Pimentel de Assump ção Davi do Socorro Barros Brasil Andr é Tags: Article Source Type: research

Molecules, Vol. 28, Pages 5554: Mesoporous CuO Prepared in a Natural Deep Eutectic Solvent Medium for Effective Photodegradation of Rhodamine B
ang Fan Metal oxide nanoparticles (NPs) have been widely used as catalysts in the chemical industry, but their preparation is usually limited by strict conditions such as high temperature, elevated pressure, and the use of volatile and highly toxic organic solvents. To solve this problem, this work developed an environmentally benign method using green solvents, i.e., natural deep eutectic solvents (NADESs), as a reaction medium to prepare copper oxide (CuO) particles. The experimental results suggested that the synthesized CuO particles were sheet-like mesoporous NPs, and they exhibited excellent catalytic performance...
Source: Molecules - July 20, 2023 Category: Chemistry Authors: Sheli Zhang Yuerong Yan Wei Hu Yunchang Fan Tags: Article Source Type: research

Molecules, Vol. 28, Pages 5553: Antibacterial and Antibiofilm Activity of Ficus carica-Mediated Calcium Oxide (CaONPs) Phyto-Nanoparticles
We describe herein the use of a Ficus carica extract as a capping and reducing agent in the phyto-mediated synthesis of CaONPs for the evaluation of their antimicrobial properties. The phyto-mediated synthesis of NPs is considered a reliable approach due to its high yield, stability, non-toxicity, cost-effectiveness and eco-friendliness. The CaONPs were physiochemically characterized by UV-visible spectroscopy, energy-dispersive X-ray (EDX), scanning-electron microscopy (SEM), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR). The biological synthesis of the calcium oxide nanoparticles revealed a ...
Source: Molecules - July 20, 2023 Category: Chemistry Authors: Asif Ullah Khan Tahir Hussain Abdullah Mubarak Ali Khan Mervt M. Almostafa Nancy S. Younis Galal Yahya Tags: Article Source Type: research

Molecules, Vol. 28, Pages 5544: Combination of Mn-Mo Oxide Nanoparticles on Carbon Nanotubes through Nitrogen Doping to Catalyze Oxygen Reduction
Mingbo Wu An efficient and low-cost oxygen catalyst for the oxygen reduction reaction (ORR) was developed by in situ growth of Mn-Mo oxide nanoparticles on nitrogen-doped carbon nanotubes (NCNTs). Doped nitrogen effectively increases the electron conductivity of the MnMoO4@NCNT complex and the binding energy between the Mn-Mo oxide nanoparticles and carbon nanotubes (CNTs), leading to fast charge transfer and more catalytically active sites. Combining Mn and Mo with NCNTs improves the catalytic activity and promotes both electron and mass transfers, greatly enhancing the catalytic ability for ORR. As a result, MnMoO4...
Source: Molecules - July 20, 2023 Category: Chemistry Authors: Min Wang Shilin Zhang Juejin Teng Shunsheng Zhao Zhongtao Li Mingbo Wu Tags: Communication Source Type: research

Molecules, Vol. 28, Pages 5540: Risk Assessment of Chlorogenic and Isochlorogenic Acids in Coffee By-Products
The objective of this review was to assess the potential health risks associated with the oral consumption of coffee by-products containing chlorogenic and isochlorogenic acids, considering both acute and chronic exposure. An electronic literature search was conducted, revealing that 5-caffeoylquinic acid (5-CQA) and 3,5-dicaffeoylquinic acid (3,5-DCQA) are the major chlorogenic acids found in coffee by-products. Toxicological, pharmacokinetic, and clinical data from animal and human studies were available for the assessment, which indicated no significant evidence of toxic or adverse effects following acute oral exposure....
Source: Molecules - July 20, 2023 Category: Chemistry Authors: Sascha Behne Heike Franke Steffen Schwarz Dirk W. Lachenmeier Tags: Review Source Type: research

Molecules, Vol. 28, Pages 5530: Core-Shell Composite MIL-101(Cr)@TiO2 for Organic Dye Pollutants and Vehicle Exhaust
Ziwei Wang MIL-101(Cr)@TiO2 core-shell composite material was synthesized via the hydrothermal method, where MIL-101(Cr) served as the core and TiO2 acted as the shell. SEM results revealed that the metal-organic framework core effectively prevented the aggregation of TiO2 nanoparticles and facilitated their dispersion. Characterization techniques such as XRD, XPS, and TGA were utilized to confirm the successful loading of TiO2 onto MIL-101(Cr) and its excellent thermal stability. MIL-101(Cr)@TiO2 was employed in photocatalytic degradation of dye pollutants and vehicle exhaust, and the potential degradation mechanisms...
Source: Molecules - July 20, 2023 Category: Chemistry Authors: Lei Wu Mengmeng Zhao Xian Xin Qiuyan Ye Kun Zhang Ziwei Wang Tags: Article Source Type: research