78,954 results match your criteria Methanol

Antifungal and antibacterial activity of marine sponges from Ratnagiri coast of India.

Maushmi S Kumar

J Mycol Med 2022 Jun 20;32(4):101305. Epub 2022 Jun 20.

SVKM'S NMIMS, Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, V. L. Mehta Road, Vile Parle (west), Mumbai 400056, India.. Electronic address:

Marine sponges have proved to be a rich source of bioactive metabolites with multiple pharmacological properties. In this study, we have investigated the antifungal and antibacterial activities of methanol extracts of Cliona, Haliclona cratera, Hyrtios cavernosus, Spongia obscura, Sarcotragus foetidus, and Xestospongia carbonaria and fractions from X. carbonaria S. Read More

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Ex vivo, in vitro, and in silico approaches to unveil the mechanisms underlying vasorelaxation effect of Mentha Longifolia (L.) in porcine coronary artery.

Biomed Pharmacother 2022 Jun 24;153:113298. Epub 2022 Jun 24.

College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia; King Abdullah International Medical Research Center, Jeddah, Saudi Arabia.

Objective: Mentha (M.) longifolia (L.) is traditionally used for various ailments. Read More

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Identification of Isomeric Biomolecules by Infrared Spectroscopy of Solvent-Tagged Ions.

Anal Chem 2022 Jun 27. Epub 2022 Jun 27.

Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.

The difference in functionality of many isomeric biomolecules requires their analytical identification for life science studies. We present a universal approach for quantitative identification of different small- to medium-sized isomeric biomolecules that can be brought to the gas phase from solution by electrospray ionization (ESI). The method involves infrared (IR) fragment cold ion spectroscopy of analyte molecules that are incompletely desolvated by soft ESI. Read More

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Yttrium-based Double Perovskite Nanorods for Electrocatalysis.

ACS Appl Mater Interfaces 2022 Jun 27. Epub 2022 Jun 27.

Department of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794-3400, United States.

Herein, we investigate the effect of the chemical composition of double perovskite nanorods on their versatile electrocatalytic activity not only as supports for the oxidation of small organic molecules but also as catalysts for the oxygen evolution reaction. Specifically, YCoMnO and YNiMnO nanorods with average diameters of 300 nm were prepared by a two-step hydrothermal method, in which the individual effects of synthetic parameters, such as the pH, annealing temperature, and precursor ratios on both the composition and morphology, were systematically investigated. When used as supports for Pt nanoparticles, YCoMnO/Pt catalysts exhibited an electrocatalytic activity for the methanol oxidation reaction, which is 2. Read More

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A Generalized Method for Determining Free Soluble Phenolic Acid Composition and Antioxidant Capacity of Cereals and Legumes.

J Vis Exp 2022 Jun 10(184). Epub 2022 Jun 10.

Department of Food and Human Nutritional Sciences, University of Manitoba; Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba;

Phenolic acids are a class of organic compounds that bear both a phenolic group, and a carboxylic group. They are found in grains and concentrate in the bran of cereals or seed coat of legumes. They possess antioxidant properties that have generated much research interest in recent years, about their potential antioxidant protective health functions. Read More

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From a Hetero- to a Methylotrophic Lifestyle: Flash Back on the Engineering Strategies to Create Synthetic Methanol-User Strains.

Front Bioeng Biotechnol 2022 8;10:907861. Epub 2022 Jun 8.

TBI, Université de Toulouse, CNRS, INRAE, INSA, Toulouse, France.

Engineering microorganisms to grow on alternative feedstocks is crucial not just because of the indisputable biotechnological applications but also to deepen our understanding of microbial metabolism. One-carbon (C1) substrate metabolism has been the focus of extensive research for the prominent role of C1 compounds in establishing a circular bioeconomy. Methanol in particular holds great promise as it can be produced directly from greenhouse gases methane and carbon dioxide using renewable resources. Read More

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Synthesis and characterization of a heterogeneous catalyst from a mixture of waste animal teeth and bone for castor seed oil biodiesel production.

Heliyon 2022 Jun 13;8(6):e09724. Epub 2022 Jun 13.

Department of Chemical Engineering, College of Biological and Chemical Engineering, Addis Ababa Science and Technology University, Addis Ababa, Ethiopia.

The present study focused on the synthesis of heterogeneous catalyst from a mixture of waste animal teeth and bone through thermal method. The produced catalyst was used for castor seed oil (CO) biodiesel production. A different mixing ratio of teeth and bone was used with a calcination temperature range from 650 °C to 1250 °C with 100 °C increment for 3h calcination duration Thermogravimetric analysis (TGA) for animal teeth and bone was performed to identify the common decomposition temperature range. Read More

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Genomic and Biocontrol Potential of the Crude Lipopeptide by HD-087 Against .

Front Microbiol 2022 9;13:888645. Epub 2022 Jun 9.

Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Heilongjiang University, Harbin, China.

Rice blast caused by is one of the most destructive plant diseases. The secondary metabolites of have potential as biological control agents against . However, no commercial secondary antimicrobial products of have been found by gene prediction, and, particularly relevant for this study, a biocontrol agent obtained from has yet to be found. Read More

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Challenges for the determination of spiramycin in aqueous matrices using LC-MS/MS: evidence for the solvent intrusion on the molecule integrity.

RSC Adv 2022 Jun 9;12(27):17096-17103. Epub 2022 Jun 9.

Central Research Laboratories, Shahid Beheshti University of Medical Sciences Tehran Iran

Liquid chromatography-tandem mass spectroscopy (LC-MS/MS) is an accurate and specific technique for drug residue analysis in different matrices. The high specificity and sensitivity of the multiple reaction monitoring (MRM) approach for detecting drugs such as aldehydes, which have the potential to change mass during the sample preparation phase, becomes a drawback during the analysis process. In this study, concerns about the intrusion of solvent molecules into spiramycin's chemical structure as an aldehydic drug as well as the stability of spiramycin in the milk matrix were addressed. Read More

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Phytochemical and Functional Characterization of Different Parts of the Fruit.

ACS Omega 2022 Jun 9;7(24):21172-21182. Epub 2022 Jun 9.

Department of Biochemistry, CSIR-CFTRI, Mysore 570020, Karnataka, India.

The fruit of is consumed traditionally and is known to possess health-promoting effects. However, studies involving the characterization of phytochemicals of different parts of the fruit, and their biological activity were limited and hence warranted a comprehensive study. The proximate analyses reveal that fruit peel was rich in crude fiber. Read More

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Synthesis of Higher Alcohols from Syngas over a K-Modified CoMoS Catalyst Supported on Novel Powder and Fiber Commercial Activated Carbons.

ACS Omega 2022 Jun 6;7(24):21346-21356. Epub 2022 Jun 6.

N.D. Zelinsky Institute of Organic Chemistry RAS, Moscow 119991, Russia.

In the present study, a series of K-modified CoMoS catalysts with compositions of 10% K, 3.6% Co, and 12 wt % Mo supported over novel commercial activated carbons such as powder materials (DAC and OBC-1) and fiber materials (fabric active sorption (TCA) and nonwoven activated material (AHM)) were prepared and characterized by Brunauer-Emmett-Teller (BET), X-ray fluorescence (XRF), scanning electron microscopy (SEM), SEM-energy dispersive X-ray (EDX), and transmission electron microscopy (TEM). The catalytic activities for higher alcohol synthesis from syngas, conducted at = 300-360 °C, = 5 MPa, GHSV = 760 L h (kg cat), and H/CO = 1. Read More

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Hydroxypropyl-β-cyclodextrin-incorporated Pebax composite membrane for improved permselectivity in organic solvent nanofiltration.

RSC Adv 2022 Jun 7;12(26):16893-16902. Epub 2022 Jun 7.

Faculty of Materials and Manufacturing, Beijing University of Technology Beijing 100124 P. R. China

Thanks to the characteristic hollow cavity structure and sustainable and nontoxic macrocycle molecule feature, cyclodextrins have been used as building block to fabricate organic solvent nanofiltration (OSN) membranes with enhanced permeability and selectivity. Herein, hydroxypropyl-β-cyclodextrin (HP-β-CD) was incorporated into a poly(ether--amide) (Pebax) layer on a polysulfone support, followed by crosslinking with toluene 2,4-diisocyanate to prepare a crosslinked HP-β-CD/Pebax (CHP) membrane. By adjusting the initial HP-β-CD concentration () and crosslinking reaction time (), the microporous structure and surface morphology of CHP ( = 0, 0. Read More

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Phytochemical Analysis and and Pharmacological Evaluation of Linn.

Evid Based Complement Alternat Med 2022 17;2022:6088585. Epub 2022 Jun 17.

Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh.

The main aim of this research was to explore Linn phytochemically and pharmacologically. Phytochemical screening is important for the isolation of active compounds before bulk extraction. The crude extracts and their fractions were screened for enzyme (urease, -glycosidase, and phosphodiesterase) inhibition assays, analgesic, anti-inflammatory, and sedative effects. Read More

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Green micellar liquid chromatographic analysis of alfuzosin hydrochloride and sildenafil citrate in a binary mixture compared to classical RPLC with stability indicating studies.

Drug Dev Ind Pharm 2022 Jun 27:1-16. Epub 2022 Jun 27.

Department of Analytical chemistry, Faculty of pharmacy, Zagazig University, Zagazig 4451, Egypt.

Two simple and validated chromatographic studies were performed for simultaneous estimation of sildenafil citrate and alfuzosin hydrochloride in bulk, pharmaceuticals, and in the presence of their main degradation products. Two systems of mobile phase were applied isocratically for their first chromatographic separation using conventional and micellar mobile phases. Methanol, acetonitrile, and 0. Read More

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Self-Templating-Oriented Manipulation of Ultrafine Pt Cu Alloyed Nanoparticles into Asymmetric Porous Bowl-Shaped Configuration for High-Efficiency Methanol Electrooxidation.

Small 2022 Jun 26:e2202782. Epub 2022 Jun 26.

School of Chemistry and Materials Science, Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Nanjing Normal University, Nanjing, 210023, P. R. China.

The precise and comprehensive manipulation of the component, size, and geometric nano-architecture of platinum-based electrocatalysts into porous and hollow structure can effectively impart the catalysts with substantially improved electrochemical performance, yet remain formidably challenging. Herein, a straightforward fabrication of porous platinum-copper alloyed nanobowls (abbreviated as Pt Cu NBs hereafter) assembled by ultrafine nanoparticles (≈2.9 nm) via a one-pot hydrothermal approach with the assistance of a structure-directing agent of N,N'-methylenebisacrylamide (MBAA) is reported. Read More

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Validated single urinary assay designed for exposomic multi-class biomarkers of common environmental exposures.

Anal Bioanal Chem 2022 Jun 27. Epub 2022 Jun 27.

Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.

Epidemiological studies often call for analytical methods that use a small biospecimen volume to quantify trace level exposures to environmental chemical mixtures. Currently, as many as 150 polar metabolites of environmental chemicals have been found in urine. Therefore, we developed a multi-class method for quantitation of biomarkers in urine. Read More

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Anti-inflammatory and antioxidant effect of methanol extract of latex of Calotropis procera in rat model of colorectal cancer.

J Ethnopharmacol 2022 Jun 23:115503. Epub 2022 Jun 23.

Department of Pathology, All India Institute of Medical Sciences, New Delhi, India.

Ethnopharmacological Relevance: Preparations derived from the plant Calotropis procera, have been used for medicinal purpose though the plant is known for its toxic effects. The aerial parts of the plant contain latex in plenty and have been found effective in treating disorders of gastrointestinal system and cancer.

Aim Of The Study: This study evaluated the efficacy of C. Read More

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A green and rapid analytical method for determination of kitasamycin in animal feedstuffs by ultra-high performance liquid chromatography tandem mass spectrometry.

J Chromatogr A 2022 Jun 6;1676:463203. Epub 2022 Jun 6.

Ningbo Academy of Agricultural Sciences, Ningbo, 315040, PR China. Electronic address:

A rapid, simple, highly efficiency analytical method for detecting kitasamycin A1, A4, A5, and A13 in different feedstuffs was successfully developed by combining enhanced matrix removal (EMR) lipid cartridge and ultra-high performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS). After extraction with acetonitrile, the sample supernatants were directly passed through the EMR lipid cartridge. Then, the cartridge was rinsed and eluted with acetonitrile and methanol, respectively, followed by UHPLC-MS/MS analysis with positive mode using multiple reaction monitoring. Read More

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Amine-incorporated quinoxaline based fluorescent sensor for detection of trace water: Solvent influenced self-assembly.

Spectrochim Acta A Mol Biomol Spectrosc 2022 Jun 17;280:121521. Epub 2022 Jun 17.

Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India. Electronic address:

Polarity is a complex parameter, with important effect in chemistry and biology. In recent years, polarity exploration attracted more and more attention hence, it's of great importance to exploit new methods for polarity determination. A novel class of long, coplanar, and amine incorporated electron-rich quinoxaline scaffold(L) furnished maximum solvatochromic effect and large Stokes shift and was chosen to determine water content in organic solvents e. Read More

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Determination of total phenolic content and antioxidant activity of Commiphora mollis (Oliv.) Engl. resin.

BMC Chem 2022 Jun 25;16(1):48. Epub 2022 Jun 25.

Department of Chemistry, College of Natural Science, Jimma University, P.O. Box 378, Jimma, Ethiopia.

In this study, total phenolic contents (TPC) and antioxidant activity of Commiphora mollis (Oliv.) Engl. (Burseraceae) resin were investigated. Read More

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Procedure to explore a ternary mixture diagram to find the appropriate gradient profile in liquid chromatography with fluorescence detector. Application to determine four primary aromatic amines in napkins.

J Chromatogr A 2022 Jun 15;1676:463252. Epub 2022 Jun 15.

Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos s/n, Burgos 09001, Spain.

The purpose of this work is to develop a tool to search for a gradient profile with ternary or binary mixtures in liquid chromatography, that can provide well-resolved chromatograms in the shortest time for multianalyte analysis. This approach is based exclusively on experimental data and does not require a retention time model of the compounds to be separated. The methodology has been applied for the quantification of four primary aromatic amines (PAAs) using HPLC with fluorescence detector (FLD). Read More

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New dihydrobenzoxanthone derivatives with bacterial neuraminidase inhibitory activity isolated from Artocarpus elasticus.

Bioorg Chem 2022 Jun 20;127:105978. Epub 2022 Jun 20.

Division of Applied Life Science (BK21 plus), IALS, Gyeongsang National University, Jinju 52828, Republic of Korea. Electronic address:

Artocarpus elasticus is a popular fruit tree in the tropical regions. Primary screenings of methanol extracts of the root bark confirmed its potent inhibition of bacterial neuraminidase (BNA), which plays an essential role in the pathogenesis of many microbial diseases. Assessments of the responsible phytochemicals were conducted by isolating eight compounds (1-8) and two of them (6 and 8) were identified as new compounds. Read More

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Polydopamine inner wall-coated hypodermic needle as microextraction device and electrospray emitter for the direct analysis of illicit drugs in oral fluid by ambient mass spectrometry.

Talanta 2022 Jun 17;249:123693. Epub 2022 Jun 17.

Affordable and Sustainable Sample Preparation (AS(2)P) Research Group, Departamento de Química Analítica, Instituto Universitario de Investigación en Química Fina y Nanoquímica IUNAN, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie, E-14071, Córdoba, Spain.

In this article, polydopamine inner wall-coated hypodermic needles (PDA-HNs) are evaluated as both microextraction devices and electrospray ionization (ESI) emitters for determining selected illicit drugs (methamphetamine, cocaine, and methadone) in oral fluid samples. The PDA film, located in the inner wall of the needle, allows the extraction of the analytes at alkaline pH, where their hydrophobic character is promoted. The extracted analytes are finally eluted in a methanol/formic acid mixture that also acts as ESI solution. Read More

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Normal-Phase TLC and Gradient Reversed-Phase HPLC for the Simultaneous Determination of Enrofloxacin and Bromhexine HCl in Presence of Two of Their Official Impurities.

J Chromatogr Sci 2022 Jun 25. Epub 2022 Jun 25.

Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr el Aini Street, Cairo 11562, Egypt.

In this work, two chromatographic methods are developed and validated for the determination of enrofloxacin and bromhexine (BRM) HCl in the presence of two of their specified impurities, ciprofloxacin and BRM impurity C. The suggested chromatographic methods included the use of thin layer chromatography (TLC-densitometry) and high-performance liquid chromatography (HPLC). In case of TLC-densitometry, good separation was achieved by using mobile phase of n. Read More

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PtIrM (M = Ni, Co) jagged nanowires for efficient methanol oxidation electrocatalysis.

J Colloid Interface Sci 2022 Jun 17;625:493-501. Epub 2022 Jun 17.

Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai 200444, China. Electronic address:

It remains a huge challenge to develop methanol oxidation electrocatalysts with remarkable catalytic activity and anti-CO poisoning capability. Herein, PtIrNi and PtIrCo jagged nanowires are successfully synthesized via a facile wet-chemical approach. Pt and Ir components are concentrated in the exterior and Ni is concentrated in the interior of PtIrNi jagged nanowires, while PtIrCo jagged nanowires feature the homogeneous distribution of constituent metals. Read More

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Secondary metabolites from the fruit peels of L. and their cytotoxic activity.

Nat Prod Res 2022 Jun 24:1-7. Epub 2022 Jun 24.

Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam.

Three new glucosides, ziberthinosides A-C (1-3), and six known compounds, cleomiscosins A-D (4-7), sporogen AO-2 (8) and sapinofuranone A (9), were isolated from a methanol extract of fruit peels. Their chemical structures were elucidated by analyses of their 1 D/2D NMR and HR-ESI-MS data as well as by comparison with the literature values. The absolute configuration of sporogen AO-2 (8) was confirmed by ECD calculation. Read More

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Curcuma zedoaria 50% methanol extracts increase adiponectin secretion by enhancing PPARγ mRNA expression in 3T3-L1 cells.

Biosci Biotechnol Biochem 2022 Jun 24. Epub 2022 Jun 24.

Department of Nutrition Management, Faculty of Health Science, Hyogo University, Kakogawa, Japan.

Curcuma zedoaria is a characteristic species of its genus that contains little to no curcuminoid. Here, we demonstrate that C. zedoaria extracts with 50% methanol increases adiponectin secretion into the media by enhancing PPARγ mRNA expression in 3T3-L1 cells. Read More

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In Situ Observation of Dicalcium Phosphate Monohydrate Formation and Phase Transformation.

J Phys Chem B 2022 Jun 24. Epub 2022 Jun 24.

College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.

Calcium orthophosphates (CaPs), as important minerals in biomineralization and biomedicine, have attracted wide attention. Dicalcium phosphate monohydrate (DCPM, CaHPO·HO), the recently discovered crystalline CaP phase, has a higher metastability than dihydrate (DCPD, CaHPO·2HO) and anhydrate (DCPA, CaHPO), which may lead to many potential applications in functional biomaterial development. However, the preparation of large-sized DCPM and the underlying mechanisms of its formation and phase evolution remain unclear. Read More

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Fast and Sensitive Method for the Determination of 17 Designer Benzodiazepines in Hair by Liquid Chromatography-Tandem Mass Spectrometry.

J Anal Toxicol 2022 Jun 24. Epub 2022 Jun 24.

Department of Sciences, John Jay College of Criminal Justices, City University of New York, NY.

In recent years, identification and analysis of designer benzodiazepines have become a challenge in forensic toxicology. These substances are analogues of the classic benzodiazepines, but their pharmacology is not well known, and many of them have been associated with overdoses and deaths. As a result, there has been a surge in efforts to develop analytical methods to determine these compounds in different biological samples. Read More

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Hydrophobic Cluster Formation in Aqueous Ethanol Solutions Probed by Soft X-ray Absorption Spectroscopy.

J Phys Chem B 2022 Jun 24. Epub 2022 Jun 24.

Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan.

Hydrophobic cluster structures in aqueous ethanol solutions at different concentrations have been investigated by soft X-ray absorption spectroscopy (XAS). In the O K-edge XAS, we have found that hydrogen bond structures among water molecules are enhanced in the middle-concentration region by the hydrophobic interaction of the ethyl groups in ethanol. In the C K-edge XAS, the lower energy features arise from a transition from the terminal methyl C 1s electron to an unoccupied orbital of 3s Rydberg character, which is sensitive to the nearest-neighbor intermolecular interactions. Read More

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