keyword
https://read.qxmd.com/read/38257233/combining-experimental-and-computational-methods-to-produce-conjugates-of-anticholinesterase-and-antioxidant-pharmacophores-with-linker-chemistries-affecting-biological-activities-related-to-treatment-of-alzheimer-s-disease
#21
JOURNAL ARTICLE
Galina F Makhaeva, Nadezhda V Kovaleva, Elena V Rudakova, Natalia P Boltneva, Sofya V Lushchekina, Tatiana Y Astakhova, Elena N Timokhina, Igor V Serkov, Alexey N Proshin, Yuliya V Soldatova, Darya A Poletaeva, Irina I Faingold, Viktoriya A Mumyatova, Alexey A Terentiev, Eugene V Radchenko, Vladimir A Palyulin, Sergey O Bachurin, Rudy J Richardson
Effective therapeutics for Alzheimer's disease (AD) are in great demand worldwide. In our previous work, we responded to this need by synthesizing novel drug candidates consisting of 4-amino-2,3-polymethylenequinolines conjugated with butylated hydroxytoluene via fixed-length alkylimine or alkylamine linkers (spacers) and studying their bioactivities pertaining to AD treatment. Here, we report significant extensions of these studies, including the use of variable-length spacers and more detailed biological characterizations...
January 9, 2024: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://read.qxmd.com/read/38237749/effect-of-type-and-concentration-of-antioxidant-on-sperm-motility-viability-and-dna-integrity-of-climbing-perch-anabas-testudineus-bloch-1792-pisces-anabantidae-post-cryopreservation
#22
JOURNAL ARTICLE
Siti Maulida, Kartini Eriani, Nur Fadli, Mohd N Siti-Azizah, Filiz K Kocabas, Mehmet Kocabas, Martin Wilkes, Luvi S Handayani, Sri R Rahayu, Zainal A Muchlisin
Sperm quality is preserved through the crucial involvement of antioxidants, which play a vital role in minimizing the occurrence of reactive oxygen species (ROS) during the cryopreservation process. The suitability of the type and concentration of antioxidants are species-dependent, and this study is crucial in order to improve the quality of the climbing perch sperm post-cryopreservation. Therefore, this study aimed to determine the best type and concentration of antioxidants for cryopreservation of climbing perch Anabas testudineus sperm...
January 17, 2024: Cryobiology
https://read.qxmd.com/read/38237081/evaluation-of-antioxidant-capacity-anticholinergic-and-antidiabetic-activities-and-phenolic-ingredients-of-asphodelus-aestivus-by-lc-ms-ms
#23
JOURNAL ARTICLE
Leyla Polat Köse
Herein, it was aimed to evaluate three different extracts of the plant Asphodelus aestivus in terms of their antioxidant capacity, total phenolic content, flavonoid profile, and anticholinergic and antidiabetic activity. In addition, the phenolic content of the A. aestivus extracts was determined by liquid chromatography-mass spectrometry/mass spectrometry. The results obtained in the antioxidant studies were checked against butylated hydroxyanisole, butylated hydroxytoluene, Trolox, and α-tocopherol antioxidants, which are reference standards...
January 18, 2024: Chemistry & Biodiversity
https://read.qxmd.com/read/38189100/is-the-stability-of-folates-in-dried-blood-microsamples-sufficient-to-perform-home-sampling-studies
#24
JOURNAL ARTICLE
Liesl Heughebaert, Christophe Pol Stove
Dried blood microsampling is increasingly used for home-sampling and epidemiological studies because of its multiple advantages, including an often greatly improved analyte stability. However, a critical assessment of the stability under realistic conditions should always be performed as part of the validation, especially for unstable molecules like folates (vitamin B9). Here, the objective was to determine whether folate stability in dried blood microsamples is sufficient to allow the set-up of home-sampling studies for the monitoring of folate status in e...
January 8, 2024: Analyst
https://read.qxmd.com/read/38138512/effects-of-bacterioruberin-rich-haloarchaeal-carotenoid-extract-on-the-thermal-and-oxidative-stabilities-of-fish-oil
#25
JOURNAL ARTICLE
Fevziye Işıl Kesbiç, Hilal Metin, Francesco Fazio, Vincenzo Parrino, Osman Sabri Kesbiç
This study aimed to assess the efficacy of a bacterioruberin-rich carotenoid extract (HAE) derived from the halophilic archaea Halorubrum ezzemoulense DSM 19316 in protecting crude fish oil against thermal oxidation. The research used fish oil derived from anchovies, which had a peroxide value (PV) of 6.44 ± 0.81 meq O2 kg-1 . To assess the impact of HAE on the thermal stability and post-oxidation characteristics of fish oil, several concentrations of HAE were added to the fish oil samples: 0 ppm (no additive) (HAE0), 50 ppm (HAE50), 100 ppm (HAE100), 500 ppm (HAE500), and 1000 ppm (HAE1000)...
December 9, 2023: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://read.qxmd.com/read/38112870/performance-evaluation-of-natural-olea-europaea-olive-oil-based-blended-esters-with-butylated-hydroxyanisole-and-butylated-hydroxytoluene-optimization-using-response-surface-methodology
#26
JOURNAL ARTICLE
Hariharasudhan Thangaraj, Prince Winston David, Gurukarthik Babu Balachandran, Gowthama Kannan Sivasekar
For power transformer applications, this study explores an alternative insulating liquid. With this aim, edible natural esters such as refined Olea europaea (olive oil), rice bran oil, soya bean oil, sunflower oil, and corn oil are investigated as suitable replacements for the mineral oil (MO) used in the transformer. In addition, olive oil and other natural esters are incorporated into the blend for further analysis to obtain a better insulating medium. Blended natural esters were also tested for performance enrichment by antioxidant inclusion...
December 19, 2023: Environmental Science and Pollution Research International
https://read.qxmd.com/read/38107893/in-vitro-antioxidant-and-in-vivo-hepatoprotective-properties-of-wissadula-periplocifolia-extract
#27
JOURNAL ARTICLE
Kazi Nadim Hossain, Md Shafiqul Islam, Sheikh Hasibur Rahman, Subroto Sarker, Milon Mondal, Mohammad Asikur Rahman, Sadeq K Alhag, Laila A Al-Shuraym, Othman A Alghamdi, Muhammad Torequl Islam, Ammar Al-Farga, Mohamed El-Shazly, Md Jahir Alam, Heba A S El-Nashar
Wissadula periplocifolia (L.) Thwaites is a traditional medicinal plant belonging to the family Malvaceae, used in folk medicine for inflamed snake bites and bee stings. The current study was designed to investigate the in vitro antioxidant and in vivo anti-inflammatory and hepatoprotective activities of 80% ethanol extract of W. periplocifolia and its different fractions. The crude ethanolic extract (CEE) was then serially fractionated with petroleum ether fraction (PEF), chloroform fraction (CHF), and aqueous fraction (AQF)...
December 12, 2023: ACS Omega
https://read.qxmd.com/read/38004276/evaluation-of-carbonic-anhydrase-acetylcholinesterase-butyrylcholinesterase-and-%C3%AE-glycosidase-inhibition-effects-and-antioxidant-activity-of-baicalin-hydrate
#28
JOURNAL ARTICLE
Lokman Durmaz, Hasan Karagecili, İlhami Gulcin
Baicalin is the foremost prevalent flavonoid found in Scutellaria baicalensis . It also frequently occurs in many multi-herbal preparations utilized in Eastern countries. The current research has assessed and compared the antioxidant, antidiabetic, anticholinergic, and antiglaucoma properties of baicalin hydrate. Baicalin hydrate was tested for its antioxidant capacity using a variety of techniques, including N,N-dimethyl-p-phenylenediamine dihydrochloride radical (DMPD•+ ) scavenging activity, 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulphonate) radical (ABTS•+ ) scavenging activity, 1,1-diphenyl-2-picrylhydrazyl radical (DPPH• ) scavenging activity, potassium ferric cyanide reduction ability, and cupric ions (Cu2+ ) reducing activities...
October 29, 2023: Life
https://read.qxmd.com/read/37948779/simultaneous-determination-of-praziquantel-fipronil-eprinomectin-s-methoprene-their-key-related-substances-and-butylated-hydroxytoluene-bht-in-a-topical-veterinary-drug-product-by-a-single-stability-indicating-high-performance-liquid-chromatography-method
#29
JOURNAL ARTICLE
Renuka P Rathnasekara, Abu M Rustum
A simple, robust and QC (quality control) friendly high performance liquid chromatography (HPLC) method was developed and validated for simultaneous determination of four active pharmaceutical ingredient [namely fipronil, (S)-methoprene, eprinomectin, and praziquantel] and their key degradation products in a broad-spectrum topical finished product. Typical sample of the finished product contains a total of 30-plus peaks of interest. Analytes were separated on a HALO C18 column (150 mm × 4...
October 19, 2023: Journal of Pharmaceutical and Biomedical Analysis
https://read.qxmd.com/read/37895159/garden-cress-seed-oil-abrogates-testicular-oxidative-injury-and-nf-kb-mediated-inflammation-in-diabetic-mice
#30
JOURNAL ARTICLE
Rasha Abu-Khudir, Gehan M Badr, Heba Ibrahim Abd El-Moaty, Rabab S Hamad, Najla K Al Abdulsalam, Aml Sayed Ali Abdelrahem, Saleha Alqarni, Mayyadah Abdullah Alkuwayti, Sherine Abdel Salam, Hanaa F Abd El-Kareem
Diabetes mellitus is a metabolic disorder associated with various complications encompassing male reproductive dysfunction. The present study aimed to investigate the therapeutic potential of biologically active Lepidium sativum seed oil (LSO) against the testicular dysfunction associated with streptozotocin (STZ)-induced diabetes. Male adults (n = 24) were divided into four groups: control, LSO-administered, diabetic (D), and LSO-treated diabetic (D+LSO) groups. LSO was extracted from L. sativum seeds, and its chemical composition was determined using GC-MS...
October 23, 2023: International Journal of Molecular Sciences
https://read.qxmd.com/read/37891358/aroma-based-discrimination-of-egyptian-versus-indian-guava-fruits-and-in-response-to-probiotics-as-analyzed-via-spme-gc-ms-and-chemometric-tools
#31
JOURNAL ARTICLE
Islam M Kamal, Ahmed Zayed, Tarek F Eissa, Mohamed A Farag
Guava tree (Psidium guajava L., Myrtaceae) is an economic grown worldwide, particularly in tropical and subtropical regions. Guavas encompass numerous cultivars (cvs.) that were discriminated in previous studies based on leaf morphological features and profile of volatile organic compounds (VOCs). Nevertheless, fruit VOCs have also shown outstanding potential for discrimination of other plant taxa, which has not been utilized in guava. Hence, the current study investigates the various guava cvs. harvested from India and Egypt...
October 27, 2023: Scientific Reports
https://read.qxmd.com/read/37874198/antagonistic-activity-of-trichoderma-asperellum-against-fusarium-species-chemical-profile-and-their-efficacy-for-management-fusarium-root-rot-disease-in-dry-bean
#32
JOURNAL ARTICLE
Ibrahim Elsaid Elshahawy, Diaa Attia Marrez
BACKGROUND: Diseases caused by Fusarium pathogens lead to significant yield losses on many economically important crops. The purpose of this study was to evaluate the antagonistic capability and chemical profile of the bioagent Trichoderma asperellum against several Fusarium strains. The efficacy of this strain in reducing Fusarium-root rot disease in dry bean was also examined. RESULTS: The T. asperellum strain was identified based on sequencing the ITS and tef1 gen regions of ribosomal DNA...
October 24, 2023: Pest Management Science
https://read.qxmd.com/read/37854488/niga-mof-based-dispersive-micro-solid-phase-extraction-coupled-to-temperature-assisted-evaporation-using-low-boiling-point-solvents-for-the-extraction-and-preconcentration-of-butylated-hydroxytoluene-and-some-phthalate-and-adipate-esters
#33
JOURNAL ARTICLE
Sakha Pezhhanfar, Mir Ali Farajzadeh, Seyed Abolfazl Hosseini-Yazdi, Mohammad Reza Afshar Mogaddam
The first-ever attempt to apply nickel gallic acid metal-organic framework (NiGA MOF) in analytical method development was done in this research by the extraction of some plasticizers from aqueous media. The greenness of the method is owing to the use of gallic acid and nickel as safe reagents and water as the safest solvent. Low boiling point solvents were applied as desorption solvents that underwent temperature-assisted evaporation in the preconcentration step. Performing the evaporation using a low-temperature water bath for a short period of time streamlines the preconcentration section...
October 11, 2023: RSC Advances
https://read.qxmd.com/read/37847881/carotenoid-characterization-fatty-acid-profiles-and-antioxidant-activities-of-haloarchaeal-extracts
#34
JOURNAL ARTICLE
Fevziye Işıl Kesbiç, Nejdet Gültepe
Microorganisms that can survive in saline environments, known as halotolerant or halophilic organisms, have a wide range of current and potential uses in biotechnology. In this study, it was aimed to determine the carotenoids of halophilic archaea strains isolated from the brine samples taken from different points of Salt Lake (Turkey) and determine the antioxidant activities of their carotenoids. To identify the halophilic archaea strains, they were cultivated in MAM JCM 168 medium and subjected to antibiotic susceptibility, fatty acid, two-dimensional and three-dimensional imaging by scanning electron microscopy and atomic force microscopy, biochemical and phylogenetic assays...
October 17, 2023: Journal of Basic Microbiology
https://read.qxmd.com/read/37816698/selective-oxidative-methyl-c-h-functionalization-of-butylated-hydroxytoluene-toward-arylimines-n-heterocycles
#35
JOURNAL ARTICLE
Jianyu Dong, Shaofeng Wu, Furong Geng, Yani Yan, Long Liu, Yongbo Zhou
A metal-free and selective oxidative methyl C-H functionalization of BHT with aniline compounds has been developed. This innovative method enables the facile and efficient synthesis of a diverse array of BHT-functionalized N -containing skeletons, including arylamines, benzoxazoles, benzothiazoles, benzimidazoles, quinazolines, and quinazolinones, all of which are challenging to access. The control experiment involving TEMP18 O suggests that the radical adduct of TEMPO with the benzyl radical of BHT may serve as an intermediate...
October 10, 2023: Journal of Organic Chemistry
https://read.qxmd.com/read/37809757/chemico-pharmacological-and-computational-studies-of-ophiorrhiza-fasciculata-d-don-and-psychotria-silhetensis-hook-f-focusing-cytotoxic-thrombolytic-anti-inflammatory-antioxidant-and-antibacterial-properties
#36
JOURNAL ARTICLE
Parisa Tamannur Rashid, Md Jamal Hossain, Miss Sharmin Zahan, Choudhury Mahmood Hasan, Mohammad A Rashid, Muhammad Abdullah Al-Mansur, Mohammad Rashedul Haque
The current study sought to examine the pharmacological potentials of crude methanolic extracts of Ophiorrhiza fasciculata and Psychotria silhetensis , as well as their various solvent fractionates, with a focus on cytotoxic, thrombolytic, membrane stabilizing, antioxidant, and antibacterial activities via in vitro and in silico approaches. The extensive chromatographic and spectroscopic analyses confirmed and characterized two compounds as (±)-licarin B ( 1 ) and stigmasterol ( 2 ) from O. fasciculata and P...
September 2023: Heliyon
https://read.qxmd.com/read/37780295/the-effect-of-essential-oil-of-anethum-graveolens-l-seed-and-gallic-acid-free-and-nano-forms-on-microbial-chemical-and-sensory-characteristics-in-minced-meat-during-storage-at-4%C3%A2-%C3%A2-c
#37
JOURNAL ARTICLE
Narges Anvar, Leila Nateghi, Nabi Shariatifar, Seyed Abdolmajid Mousavi
The aim of this study was to evaluate the effect of gallic acid (GA) and essential oil (EO) of Anethum graveolens L. seed (forms of nanoliposome and free) on bacteriological, chemical and sensory properties of minced meat during storage. In this research, Escherichia coli (gram negative) and Staphylococcus aureus (gram positive) were used to examine the effect of these compounds on meat. The particle sizes (z-average diameter) of prepared nanoliposomes of EO and GA were in the range of 141 to 165 nm and 146-160 nm, respectively and the efficiency of encapsulation (EE %) in the current research was 51...
October 30, 2023: Food chemistry: X
https://read.qxmd.com/read/37754093/ternary-heterojunction-graphitic-carbon-nitride-cupric-sulfide-titanium-dioxide-photoelectrochemical-sensor-for-sesamol-quantification-and-antioxidant-synergism
#38
JOURNAL ARTICLE
Likun Huang, Jingshi Yang, Zhishan Liang, Ruilian Liang, Hui Luo, Zhonghui Sun, Dongxue Han, Li Niu
Sesamol (SM) is a potent natural antioxidant that can quench free radicals and modulate the cholinergic system in the brain, thereby ameliorating memory and cognitive impairment in Alzheimer's disease patients. Moreover, the total antioxidant capacity can be amplified by synergistic interactions between different antioxidants. Here, we constructed a ternary heterojunction graphitic carbon nitride/cupric sulfide/titanium dioxide (g-C3 N4 /CuS/TiO2 ) photoelectrochemical (PEC) sensor for the quantification of SM and its synergistic interactions with other antioxidants...
August 30, 2023: Biosensors
https://read.qxmd.com/read/37751543/bht-butylated-hydroxytoluene
#39
JOURNAL ARTICLE
Christina Burnett, Wilma F Bergfeld, Donald V Belsito, Curtis D Klaassen, Daniel C Liebler, James G Marks, Ronald C Shank, Thomas J Slaga, Paul W Snyder, Monice Fiume, Bart Heldreth
The Expert Panel for Cosmetic Ingredient Safety reviewed updated information that has become available since their original assessment from 2002, along with updated information regarding product types, and frequency and concentrations of use, and reaffirmed their original conclusion that BHT is safe as a cosmetic ingredient in the practices of use and concentration as described in this report.
September 26, 2023: International Journal of Toxicology
https://read.qxmd.com/read/37751083/in-vitro-antioxidative-activity-of-fritillaria-cirrhosa-d-don-straw-ethanolic-extract-and-its-effect-on-lipid-protein-oxidation-and-quality-of-chinese-style-sausage
#40
JOURNAL ARTICLE
Yixi Yang, Yuxuan Zhang, Bowen Zhang, Ying Bao, Shaotang Xu, Xue Tang, Qi Zhao, Jian Li, Rui Li
Fritillaria cirrhosa D. Don, which can be used for medicine and food, contains a variety of chemicals including polyphenols, alkaloids, terpenoid, and others that have beneficial biological properties like antihypertension, bacteriostasis, and anti-inflammatory. The ethanolic extract of Fritillaria straw was obtained for this study using ultrasonic-aided extraction, and the amounts of total phenols and total flavonoids were 26.56 ± 1.36 mg GAE/g dw and 18.75 ± 0...
September 26, 2023: Journal of Food Science
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