Tag: M.W=500-550

Zhang, Guohua published the artcileEthanol extracts from Cinnamomum camphora seed kernel: Potential bioactivities as affected by alkaline hydrolysis and simulated gastrointestinal digestion, COA of Formula: C18H24N6O6S4, the publication is Food Research International (2020), 109363, database is CAplus and MEDLINE.

The aim of the study was to evaluate the changes of potential bioactivities of ethanol extracts (EE) from Cinnamomum camphora seed kernel (CCSK) after alk. hydrolysis and simulated gastrointestinal digestion. The total phenolic and total flavonoid contents in EE decreased by 30.6%, 1%, 33% and 11.8% after hydrolysis and digestion, resp. The total saponins content decreased by 17% after hydrolysis while increased by 48% after digestion. The total condensed tannin contents increased by 70.3% and 17.2% after hydrolysis and digestion, resp. The 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid (ABTS), cupric ion reducing activity (CUPRAC), ferric reducing antioxidant power (FRAP) and metal chelating activity (MCA) were used to determine antioxidant activity. Overall, the changes of antioxidant activities by hydrolysis and digestion were consistent with the changes of their total phenolic and flavonoid contents. The α-amylase and α-glucosidase inhibitory activities in EE increased by 817% and 33.3% after digestion while decreased by 12.3% and 19% after hydrolysis, resp. Although the inhibitory activities of cholinesterase, tyrosinase and xanthine oxidase were decreased by hydrolysis and digestion, most of these activities were retained. These results showed that CCSK ethanol extracts had strong bioactivities and were reasonably stable to alkali and digestive enzymes.

Food Research International published new progress about 30931-67-0. 30931-67-0 belongs to thiazole, auxiliary class Salt,Hydrazine,Amine,Benzothiazole, name is Ammonium 2,2′-(hydrazine-1,2-diylidene)bis(3-ethyl-2,3-dihydrobenzo[d]thiazole-6-sulfonate), and the molecular formula is C20H17FO4S, COA of Formula: C18H24N6O6S4.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica

Liu, Shuo published the artcileProgrammable and Reversible Regulation of Catalytic Hemin@MOFs Activities with DNA Structures, Computed Properties of 30931-67-0, the publication is Chemical Research in Chinese Universities (2020), 36(2), 301-306, database is CAplus.

Abstract: Metal-organic frameworks(MOFs)-based nanozyme plays an important role in biosensing, therapy and catalysis. In this study, the effects of single-stranded DNA(ssDNA) with programmable sequences and its complementary DNA(TDNA) on the intrinsic peroxidase-like activity of hemin loaded MOFs(UiO-66-₂), denoted as hemin@UiO-66-NH₂, were investigated. The hemin@UiO-66-₂ exhibited improved catalytic activity compared with free hemin. However, the catalytic activity is inhibited in the presence of ssDNA, as ssDNA can be adsorbed by MOFs and therefore protected the active sites from contact with substrates. Upon the addition of the T_DNA, double-stranded DNA(dsDNA) was formed and detached from the MOFs, resulting in the recovery of catalytic activity. Sequentially adding ssDNA or its complementary DNA strands can achieve the reversible regulation of the catalytic activity of MOFs nanozymes. Moreover, the DNA hybridization-based regulation was further applied to a cascaded catalytic system composed of the nanozyme, hemin@UiO-66-NH₂, and glucose oxidase. These nanozyme based programmable and reversibly regulated catalytic systems may have potential applications in future smart biosensing and catalysis systems.

Chemical Research in Chinese Universities published new progress about 30931-67-0. 30931-67-0 belongs to thiazole, auxiliary class Salt,Hydrazine,Amine,Benzothiazole, name is Ammonium 2,2′-(hydrazine-1,2-diylidene)bis(3-ethyl-2,3-dihydrobenzo[d]thiazole-6-sulfonate), and the molecular formula is C18H24N6O6S4, Computed Properties of 30931-67-0.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica

Ma, Youchuan published the artcileEffect of ultrasound on mass transfer kinetics and phenolic compounds of apple cubes during osmotic dehydration, COA of Formula: C18H24N6O6S4, the publication is LWT–Food Science and Technology (2021), 112186, database is CAplus.

This study investigated the impacts of ultrasound-assisted osmotic dehydration (UOD) with different frequency (40 kHz, 80 kHz, 40 + 80 kHz) and intensity (25 W/L, 50 W/L, 75 W/L) on the kinetics of mass transfer, phenolic losses and the antioxidant properties of apple cubes (8 mm). The mass transfer efficiency of solid gain (SG) was greater under dual-frequency (β = 0.413) than 40 kHz (β = 0.707) and 80 kHz (β = 0.793) under the same intensity. Moreover, the mass transfer efficiency of SG under 75 W/L 40 kHz UOD was higher than that of 25 W/L and 50 W/L UOD based on β values. Notably, the loss of phenolic content under 75 W/L UOD (18.9%) was substantially higher than that of the 25 W/L UOD treatment (1.2-1.8%). A UOD treatment of 50 W/L and 40 + 80 kHz is recommended to optimize mass transfer efficiency and phenolic retention of dehydrated apple cubes.

LWT–Food Science and Technology published new progress about 30931-67-0. 30931-67-0 belongs to thiazole, auxiliary class Salt,Hydrazine,Amine,Benzothiazole, name is Ammonium 2,2′-(hydrazine-1,2-diylidene)bis(3-ethyl-2,3-dihydrobenzo[d]thiazole-6-sulfonate), and the molecular formula is C18H24N6O6S4, COA of Formula: C18H24N6O6S4.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica

Liudvinaviciute, Dovile published the artcileAdsorption of caffeic acid on chitosan powder, COA of Formula: C18H24N6O6S4, the publication is Polymer Bulletin (Heidelberg, Germany) (2021), 78(4), 2139-2154, database is CAplus.

Abstract: Adsorption of caffeic acid (CA) on chitosan (CH) powder from aqueous solution has been investigated to obtain insoluble CA-CH complex powders having different amount of CA. The pseudo-second kinetic model and the Langmuir, Freundlich and Dubinin-Radushkevich adsorption models were used to describe the kinetic and equilibrium adsorption of CA on CH. With the increase of adsorption temperature, the rate of adsorption increased while the amount of adsorbed CA decreased. The Langmuir adsorption model predicted that adsorption of CA takes place on the ionized amino groups of CH. However, with the increase of adsorption temperature the ion-exchange between carboxylic groups of CA and amino groups of CH became moderately difficult. The thermodn. characteristics of adsorption have been evaluated. CA-CH complex formation was confirmed by FT-IR spectroscopy. With increasing amount of adsorbed CA the CA-CH powder was becoming more hydrophobic. 2,2′-Azinobis-(3-ethylbenzothiazoline-6-sulfonate) (ABTS) assay confirmed that CA retained the antioxidant activity when immobilized on chitosan power.

Polymer Bulletin (Heidelberg, Germany) published new progress about 30931-67-0. 30931-67-0 belongs to thiazole, auxiliary class Salt,Hydrazine,Amine,Benzothiazole, name is Ammonium 2,2′-(hydrazine-1,2-diylidene)bis(3-ethyl-2,3-dihydrobenzo[d]thiazole-6-sulfonate), and the molecular formula is C18H24N6O6S4, COA of Formula: C18H24N6O6S4.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica

Shad, Naveed Akhtar published the artcileLamellar shape lead tungstate (PbWO4) nanostructures as synergistic catalyst for peroxidase mimetic activity, Computed Properties of 30931-67-0, the publication is Materials Research Express (2020), 7(1), 015520, database is CAplus.

Tungstate based nanomaterials have emerged as important class in transition metal oxide. In this study, Lead tungstate (PbWO₄) nanostructures with lamellar morphol. were prepared by hydrothermal method. The synthesized materials were characterized by XRD, SEM, FTIR, DLS, BET and PL. Nitrogen adsorption-desorption measurements indicated that the surface area of the synthesized lamellar morphol. was _∼86.225 m² g^-1. The lamellar-like morphol. showed enhanced peroxidase-like activity owing to the large surface area, higher substrate interaction and efficient electron transportation. The results indicated higher reaction velocity (V_max = 13.56 × 10^-8 M s^-1) and low Michaelis-Menten constant (km = 0.325 mM) value for nanostructures, providing evidence for higher affinity of novel structures towards the substrate and increased peroxidase-like activity. Finally, biocompatibility test was conducted by performing cytotoxicity experiments of PbWO₄ nanostructures on MTT assays.

Materials Research Express published new progress about 30931-67-0. 30931-67-0 belongs to thiazole, auxiliary class Salt,Hydrazine,Amine,Benzothiazole, name is Ammonium 2,2′-(hydrazine-1,2-diylidene)bis(3-ethyl-2,3-dihydrobenzo[d]thiazole-6-sulfonate), and the molecular formula is C10H10O3, Computed Properties of 30931-67-0.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica

Horn, Christoph published the artcileChemical design of hydrogels with immobilized laccase for the reduction of persistent trace compounds in wastewater, Computed Properties of 30931-67-0, the publication is ACS Applied Polymer Materials (2021), 3(5), 2823-2834, database is CAplus.

Hydrogels with immobilized enzymes are increasingly applied in biocatalytic industrial processes. Here, polymer hydrogels containing 2-hydroxyethyl methacrylate (HEMA), itaconic acid (ITA), (2-((2-(ethoxycarbonyl)prop-2-en-1-yl)oxy)ethyl) phosphonic acid (ECPPA), and N,N′-diethyl-1,3-bis(acrylamido)propane (BAAP) as the cross-linker are synthesized by UV-initiated radical polymerization Laccase from Trametes versicolor (LAC) is modified by reaction with itaconic anhydride (ITAn) yielding the LAC-immobilized monomer ITA-LAC with enhanced enzyme activity. ITA-LAC paves the way to an in situ method for enzyme immobilization. Hydrogels with HEMA, ECPPA, and BAAP with stepwise varied chem. composition and functionalization are prepared The influence of the composition on the morphol., the swelling behavior, the mech. stability, and the enzymic activity is studied. The polymerization is monitored by the conversion of double bonds with in situ attenuated total reflection Fourier transform IR (ATR-FTIR) spectroscopy. The polymerization of HEMA is complete after 10 min of UV exposure, whereas hydrogels of HEMA/ITA/ECPPA (85/5/10) with 5 mol % cross-linker require 30 min. These hydrogels are compared with those containing ITA-LAC instead of ITA. The covalent binding of LAC is proven by ATR-FTIR spectroscopy and results in an enhanced enzyme activity. The incorporation of ECPPA induces pH-dependent swelling with an equilibrium degree of swelling of up to 6 at pH 8. Only a weak influence of temperature on the degree of swelling is found. The morphol. strongly depends on the hydrogel composition LAC-ITA hydrogels are characterized by an open morphol. providing access to catalytic centers. The enzyme-immobilized hydrogels are used as granules as well as coatings on porous Al₂O₃ ceramic substrates as biocatalysts to convert models for organic trace compounds [bisphenol A (BPA), diclofenac, p-chlorophenol (pCP), 17α-ethinylestradiol (EED), triclosan, paracetamol, and 4-tert-octylphenol]. The highest conversion after 24 h in water is achieved for triclosan (>90%), while pCP, BPA, and EED reach a conversion between 60% and 70%. The conversions are even higher in citrate buffer.

ACS Applied Polymer Materials published new progress about 30931-67-0. 30931-67-0 belongs to thiazole, auxiliary class Salt,Hydrazine,Amine,Benzothiazole, name is Ammonium 2,2′-(hydrazine-1,2-diylidene)bis(3-ethyl-2,3-dihydrobenzo[d]thiazole-6-sulfonate), and the molecular formula is C18H24N6O6S4, Computed Properties of 30931-67-0.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica

Sillero, Leyre published the artcileExtraction of flavonoid compounds from bark using sustainable deep eutectic solvents, Application In Synthesis of 30931-67-0, the publication is Sustainable Chemistry and Pharmacy (2021), 100544, database is CAplus.

The use of green solvents in extraction processes, especially for applications of lignocellulosic biomass, has been extensively studied over the last years. Among the range of different green solvents, deep eutectic solvents (DES) show promising results for extraction processes. Therefore, the aim of this work was the use of DES as additives in aqueous mixtures for the selective extraction of flavonoid compounds from the bark of Larix decidua. For this purpose, bark has been treated using different solvent ratios consisting of a DES/H2O mixture (0, 25, 50 and 75 wt%). Two DES were studied, choline chloride:urea and choline chloride:1,4-butanediol. In order to study the success of the extractions, the extracts and the remaining solid fraction were characterized. From the results, it was concluded that the choline chloride:1,4-butanediol (75 wt%) gave the best results, obtaining the richest extracts in flavonoids (383 mg CE/g dried bark extract), as well as those with the highest antioxidant capacity. These good results confirm the capacity of this DES to obtain active biomols. for further application.

Sustainable Chemistry and Pharmacy published new progress about 30931-67-0. 30931-67-0 belongs to thiazole, auxiliary class Salt,Hydrazine,Amine,Benzothiazole, name is Ammonium 2,2′-(hydrazine-1,2-diylidene)bis(3-ethyl-2,3-dihydrobenzo[d]thiazole-6-sulfonate), and the molecular formula is C24H12, Application In Synthesis of 30931-67-0.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica

Huang, Xinzhou published the artcileDesign of a novel photoelectrochemical enzymatic biofuel cell with high power output under visible light, Application In Synthesis of 30931-67-0, the publication is Chemical Engineering Journal (Amsterdam, Netherlands) (2022), 431(Part_2), 134037, database is CAplus.

Photoelectrochem. enzymic biofuel cell (PEBFC) shows the obvious advantages in the renewable energy conversion field. However, because of the low utilization efficiency of solar energy and the unendurable power output, PEBFC cannot satisfy the demand of practical applications. Herein, a novel PEBFC prototype is designed. Taking a TiO₂ nanorod arrays (NRAs) decorated graphene-cadmium sulfide quantum dots (GR-CdS QDs) hybrid at fluorine-doped tin oxide (FTO) glass electrode as the photoanode, it can catalyze the oxidation of ascorbic acid (AA) effectively, with the oxidation current being as high as -137.8μA cm^-2, and the anodic open circuit potential (EOCPa) reaching approx. -0.52 V; using a laccase-bound three-dimensional graphene-single walled carbon nanotubes (3D GR-SWCNTs-laccase) hybrid electrode as the biocathode, along with 2,2′-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS), the biocathode can catalyze the reduction of oxygen remarkably, and the cathodic open circuit potential (EOCPc) is as high as 0.54 V. Under optimal conditions, such PEBFC can obtain sufficient high open circuit voltage (Voc) of 1.05 V and maximum power output d. (Pmax) of 227.5μW cm^-2, resp. Two PEBFCs connected in series can light a red light-emitting diode (LED) successfully.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about 30931-67-0. 30931-67-0 belongs to thiazole, auxiliary class Salt,Hydrazine,Amine,Benzothiazole, name is Ammonium 2,2′-(hydrazine-1,2-diylidene)bis(3-ethyl-2,3-dihydrobenzo[d]thiazole-6-sulfonate), and the molecular formula is C18H24N6O6S4, Application In Synthesis of 30931-67-0.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica

Zhang, Xiaowei published the artcileStability, structure, and antioxidant activity of astaxanthin crystal from Haematococcus pluvialis, Formula: C18H24N6O6S4, the publication is Journal of the American Oil Chemists’ Society (2022), 99(5), 367-377, database is CAplus.

Crystallized anthaxanthin was prepared through the cleaning crystallization method and the stabilities during thermal, lighting, and pH treatment, and antioxidant activities in vitro were evaluated. The structural characterizations of astaxanthin crystal were verified by ¹H, ¹³C NMR, and XRD anal. The stability data showed that the astaxanthin crystal was more sensitive to heat, light, and pH compared to oleoresin. The sucrose had no outstanding influence on the astaxanthin crystal, while the stability of astaxanthin oleoresin slightly increased with the increase of sugar concentration The XRD and NMR spectra elucidated that the astaxanthin crystal was all trans structure. The astaxanthin crystal showed the dominant 1,1′-diphenyl-2-picrylhydrazyl (IC₅₀ 18.65 μmol L^-1), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt ⁺(21.1 μmol L^-1), •OH (IC₅₀ 49.46 μmol L^-1) and ferric reducing antioxidant power (IC₅₀ 81.60 μmol L^-1) activities. The investigated results would be helpful for improving the development of astaxanthin crystal in food products.

Journal of the American Oil Chemists’ Society published new progress about 30931-67-0. 30931-67-0 belongs to thiazole, auxiliary class Salt,Hydrazine,Amine,Benzothiazole, name is Ammonium 2,2′-(hydrazine-1,2-diylidene)bis(3-ethyl-2,3-dihydrobenzo[d]thiazole-6-sulfonate), and the molecular formula is C20H40O2, Formula: C18H24N6O6S4.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica

Ben Hassine, Amna published the artcileUntargeted phytochemical profile, antioxidant capacity and enzyme inhibitory activity of cultivated and wild lupin seeds from Tunisia, Application In Synthesis of 30931-67-0, the publication is Molecules (2021), 26(11), 3452, database is CAplus and MEDLINE.

Lupin seeds can represent a valuable source of phenolics and other antioxidant compounds In this work, a comprehensive anal. of the phytochem. profile was performed on seeds from three Lupinus species, including one cultivar (Lupinus albus) and two wild accessions (Lupinus cossentinii and Lupinus luteus), collected from the northern region of Tunisia. Untargeted metabolomic profiling allowed to identify 249 compounds, with a great abundance of phenolics and alkaloids. In this regard, the species L. cossentinii showed the highest phenolic content, being 6.54 mg/g DW, followed by L. luteus (1.60 mg/g DW) and L. albus (1.14 mg/g DW). The in vitro antioxidant capacity measured by the ABTS assay on seed extracts ranged from 4.67 to 17.58 mg trolox equivalent (TE)/g, recording the highest values for L. albus and the lowest for L. luteus. The DPPH radical scavenging activity ranged from 0.39 to 3.50 mg TE/g. FRAP values varied between 4.11 and 5.75 mg TE/g. CUPRAC values for lupin seeds ranged from 7.20 to 8.95 mg TE/g, recording the highest for L. cossentinii. The results of phosphomolybdenum assay and metal chelation showed similarity between the three species of Lupinus. The acetylcholinesterase (AChE) inhibition activity was detected in each methanolic extract analyzed with similar results. Regarding the butyrylcholinesterase (BChE) enzyme, it was weakly inhibited by the Lupinus extracts; in particular, the highest activity values were recorded for L. albus (1.74 mg GALAE/g). Overall, our results showed that L. cossentinii was the most abundant source of polyphenols, consisting mainly in tyrosol equivalent (5.82 mg/g DW). Finally, significant correlations were outlined between the phenolic compounds and the in vitro biol. activity measured, particularly when considering flavones, phenolic acids and lower-mol.-weight phenolics.

Molecules published new progress about 30931-67-0. 30931-67-0 belongs to thiazole, auxiliary class Salt,Hydrazine,Amine,Benzothiazole, name is Ammonium 2,2′-(hydrazine-1,2-diylidene)bis(3-ethyl-2,3-dihydrobenzo[d]thiazole-6-sulfonate), and the molecular formula is C18H24N6O6S4, Application In Synthesis of 30931-67-0.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica